Devices and method for producing denture elements

Translation of description of equivalent WO 2004038326 A2

Devices and methods for the preparation of tooth replacement parts

description

The present invention relates to devices and methods for the preparation of tooth replacement parts, in particular using Oberflachenerfassungs- -erzeugungsein- and devices and methods for surface acquisition and generation for detection and / or generation of surfaces of teeth.

Basic technologies that are used together with the present invention, or with which they can be combined, are in the Offerüegungsschriften DE 4439 307 Al and DE 19721 688 AI and WO 02/39056 Al discloses the one hand and Oberflachenerfassungs- -erzeugungseiririchtungen and procedures surface acquisition and generation are used to represent the closest prior art and on the other hand Mermit are incorporated by reference into the present document, since the present invention in all its configurations is available and can be combined with this technology, and it far more advantageously forms and / or improved, which also targets of the present invention in some of its aspects.

WO 02/39056 Al discloses a number of common and / or important information for the understanding and design of the present invention is useful, or at least advantageous, so that the WO 02/39056 AI will now largely quoted.

In the original version of WO 02/39056 AI whose technical teaching reaches the goal of creating a Oberflachenerfassungs- and generating means comprising means for Ablaufsund / or cost optimization.

According to WO 02/39056 Al is preferably provided that the means for Ablaufs- and / or cost optimization comprise Rolimaterial recovery facilities, and / or that the devices for Ablaufs- and / or on wall optimization include automated control of the intensity of the laser light used. Alternatively or additionally, it is preferred if the means are adapted to Ablaufs- and / or cost optimization such that two fields having different positions or views show, are evaluated, wherein a pulsed laser is particularly included for exposure. 5

Other alternative or additional embodiments of a surface sensing device according to WO 02/39056 AI consist in particular in that the means for Ablaufs- and / or cost optimization devices included to perform a calibration procedure by evaluating superimposition errors at L 0 matching points for obtaining surface data of teeth , and / or that a Bildaufzeichnimgseinrichtung, in particular a CCD chip, is arranged so that rows are perpendicular to the direction of the measuring table taking into account the Scheimpflug.

Another variation of a surface detection means in particular for obtaining .5 surface data of teeth according to WO 02/39056 AI is that the means for Ablaufs- and / or cost optimization devices to archive particular three-dimensional Rieferdaten and or to empathize with the bite position of the upper and lower jaws contain.

0 Special preferably particular mechanical configurations of the surface sensing device depend on the disclosure of the figures 3 and 4 and / or 5, 6 and 7 and the related description.

It is further preferred if at Oberflachenerfassungs- and generating means 5 in particular special for the production of dental prostheses, the means for Ablaufs- and / or cost optimization devices for optimized preparation of at least one tooth stump for the production and placement of a dental prosthesis on it and / or arrangements for consideration the bite position of the upper and lower jaws contain.

0 The Oberflachenerfassungs- and / or production process according to WO 02/39056 AI are characterized in that they use one or more of the above described equipment and operate according to analog.

Finally, by WO 02/39056 AI still a patient data archive system provide GE 5, which is characterized by a chip card and / or remote data storage particularly for dental data. Individual aspects of WO 02/39056 AI be explained in more detail.

In one aspect of WO 02/39056 AI is based on surface mapping technologies, equipment and procedures as specified in the above and 5 incorporated by reference publications are provided herein and are referred to hereinafter simply as "scanners" or "scanning" , with, for example, a milling machine provided a raw material recovery in combination. The scanner together with the milling machine and suitable IT a CAD-CAM system in particular for producing gold or platinum dentures. The recovery of raw materials can

L 0 preferably be realized in that the milling machine, for example, used with

Facilities equipped for example for sucking gold or platinum dust Aspänen. In view of the high cost of the raw materials of gold or platinum, a substantial reduction of costs for the production of gold or platinum dentures is achieved advantageously.

.5

According to another aspect of WO 02/39056 AI disclosed in the Veröffenthchungen initially indicated Scanner technology is further improved.

Firstly, this is according to WO 02/39056 AI by an automatic control of the hi- 0 of laser light used intensity achieved. Here preferably the reflectance to be measured is determined, for example, about the intensity of the example taken by a CCD chip light. Based on the determination result, the intensity of laser light is then readjusted. The improvement of this embodiment is that by measuring errors are reduced due to under- or over-control of the measurement signal. 5 WO 02/39056 Al relates to both devices, as well as methods according to the above explanation.

The scanner technology is on the other hand improved by an increase in speed under WO 02/39056 AI, by instead of one frame of the camera /

0 CCD chip, consisting of two assembled half-frames, two such fields are evaluated, showing different views. The different views are formed by different relative positions of the surface to be detected of a tooth and means for receiving said surface (eg a camera with a CCD chip or a alone).

5

the above improvement, particularly but generally the sensing technology used can be advantageously developed, that similar to a stroboscopic effect of Council applied laser driven pulsed and for example, the table on which the object whose surface is to be detected, such as a tooth or a model of it, in particular continuously moved. The pulsed laser beam created by each relative position of object and camera snapshots or "Standaufiiahmen" because the object 5 with a laser beam pulse is apparently during the short exposure time and in this

Position can be recorded by the camera. Particularly preferably, each individual laser pulse is coupled to the recording of one field.

Yet another improvement of scanner technology according to WO 02/39056 AI is L 0 in a calibration procedure that corrects various spatial distortions of the measured variables. Here, a body from different directions is measured. The measurements will be merged by Matching- algorithm. The overlay error occurring at different points of the object in this merging are analyzed that deviations are detected in all spatial directions. These deviations L 5 gen resulting calibration error, from which in turn calibration parameters in all directions and

Rotations of space are calculated. These calibration parameters can then be automatically taken into account by the computer, thus achieving an increased measurement accuracy advantageously in further measurements. Further details will be apparent from the embodiment shown in FIG. 1.

> 0

Furthermore, the scanner technology, according to the still earlier prior art, WO 02/39056 AI improved by the CCD chip (or in general a surface chenbilderfassungsvorrichtung) is arranged so that, for example, camera-line taking into account the Scheimpflug perpendicularly to for example the traversing the measuring table are, on the object to be detected is installed. Further details are given in the exemplary embodiment according to FIG. 2 Thereby, a better utilization of the measuring field for the measurement is achieved for example by teeth, bearing in mind that commercially available chips are not square.

The known scanner technology also can be still improving that 02/39056 AI traverse and pivot axes of slides, object and / or camera are provided and arranged according to the WO that an insight into all occurring in the jaw undercuts when the teaching of WO 02/39056 is AI eg in the range of tooth surface detection is used, allows. This has the advantage that a fully automated surveying / measuring strategy can be used. According to another aspect of WO 02/39056 AI various IT modules are used for example in various fields of dentistry with advantage.

Thus, WO 02/39056 AI creates a scanner technology that is equipped with a computer, preferably in the form of a 5 standard computer with special software as a controller, equipped, which is suitable for archiving, for example of three-dimensional jaw data, in particular data surface. The archive is the replacement of previous archiving forms of such data in the form of plaster models. In many areas of dentistry, it has been necessary to keep the plaster models of patients up to 10 years, which means a tremendous

L has 0 footprint result. The electronic archiving of this data creates j edoch not only in terms of the space required remedial, but also allows a faster, simpler and more cost-effective use of archived data. So it is for example possible to detect 3D measurement data of formerly healthy tooth surfaces and archive. This enables according to years, for example, when a tooth has to be replaced, a reconstruction of the

L 5 tooth in the form of a dental prosthesis, which can be produced, for example, on the basis of archived data by frästechnische generation of its surfaces.

An electronic archiving of jaw / Gebil3daten can advantageously be used in many other respects, but still. To allow for this data by means of a suitable EDP i 0 a recreation of the bite position of the upper and lower jaws. In particular, this can be generated by first the lower jaw is measured, then a bite record (impression in the patient's mouth while he bites) is placed on the lower jaw and is measured again. Thus, both tooth surfaces are determined in the bite situation. Both sets of data can be used separately or together and visualizes all related

: 5 dental analyzes are performed, for example qualitatively or quantitatively (in terms of distance or volume measurements). To complement also the complete upper jaw can be measured and referenced spatially by means of the bite registration and for example, a matching software. Likewise chewing movements by recording the jaw movement and bite record can be simulated on the computer. The referencing of the measurement data from

0 upper and lower jaws can also contribute to modulation of dentures in connection with the

CAD-CAM technology are used.

Another variation of the WO 02/39056 AI consists of a scanner technology that is equipped with a computer, such as a standard computer with a corresponding software 5 as a control device to the bite position of the upper and lower jaws with special

To empathize alignment for orthodontic treatment. Treatment planning for example braces can be simulated that example , in software the dentition in tooth groups to have is broken down to individual teeth. Such groups individual teeth can be moved and the final positions are simulated. This allows answers to questions if required space on the alveolar ridge is present and how the bite after the treatment will be. Through further EDP / Sun: ftware-bodies 5 gen, which can be assembled modularly, a treatment control is possible.

By Time Period a jaw can be repeatedly scanned. The zeithch consecutive shots can then be played back as an interpolated "film". This allows a comparison of the course of the actual treatment with the planned treatment and the definition / implementation of corrections. Such reception rows can FER L are 0 ner archived and facilitate evidence, for example in processes. The Kornmunikation is facilitated with referees and cash and accelerated.

Another aspect of WO 02/39056 AI consists of a scanner technology that is equipped with a computer / electronic control (for example, by software) to eg

L 5 to be able to understand the bite position of the upper and lower jaws with a special focus for the jaw-surgical treatment. As part of this aspect of WO 02/39056 AI, the inclusion of data of the jawbone is in particular (as determined for example by computer tomography) provided by a suitable matching software. Treatment planning (eg surgery of the jaw) is characterized simulated

10 lines, that for example in a software the dentition, the jaw and the jaw bone in

Tooth / jaw section groups (down to individual teeth) is broken down. The groups / individual teeth can be moved and the final positions are simulated. This allows answering questions whether a required space is available and how the patient will look after treatment. Another computer / data processing software module may in this case

5 are used for treatment monitoring. After the expiry of periods j e is Weil scanned the current status. The recordings over time can be played as an interpolated "film". The course of the actual treatment can be compared with the planned treatment and deposits required corrections are derived therefrom, hi advantageously allows this aspect of WO 02/39056 AI, the

0 planning and simulation of implants. Archived Recording rows for easier standard of proof in case of possible processes and easier and faster Kornmunikation appraisers and cash are a further advantage.

As part of the WO 02/39056 AI eventually is still a patient data carrier, such as for 5 example a smart card, containing all personal health and disease data. Such individual media can be integrated into a management and archiving system that particular remote storage devices for archiving contains ren large amounts of data, which can be accessed through access devices on the disk. Thus, for example, dental patient master data, the 3D-Maxillo -Einzelzahndaten of tooth surfaces and internal structures of individual teeth and generating data of inserted dentures (eg material and milling data) may contain, archive and make readily available. In addition, further health insurance data, digital radiography, formerly and currently attending physicians and generally the entire medical history of a patient are stored. As part of the technical teaching of WO 02/39056 AI special reader and evaluators can further provided and u. U. can be integrated into the system. To be as advantages, for example, a double archiving the patient, better Rückverfolgungsmög- liabilities reached their residence for health insurance and Datenverfugbarkeit.

Further subject matter of WO 02/39056 AI is another variant / configuration for implementing a pulsed measurement, as already shown in principle above.

A corresponding Oberflächenerfassungsein- or device consists for example of a linear stage, a CCD camera, a frame grabber and a laser line module. For data acquisition, the laser line is permanently projected onto the object. The measuring table moves the object gradually under the measuring arrangement (laser line and CCD chip) therethrough. After each step, a measurement.

Here, the former exact procedure is as follows: The measuring table moves into a starting position and stops. The object must rest, thus avoiding a "blurring" of the recording leads to CANDIES Messungenau-. Then the CCD camera reads a line from (full-screen) and outputs the signal to the frame grabber. The table is then accelerated (up ramp). Thereafter, the table is again decelerated and stopped in a predetermined position (deceleration ramp). The CCD camera then reads from the next line. This whole process takes place under blackout. The laser diode can be adjusted upwards only to a certain power, so the signal is not overdriven.

According to WO 02/39056 AI it was at that time a novelty that the laser line is projected strobe-like on the measured object, that is, regular flashes of light are thrown into the form of a laser line on the object. The measuring table moves the object continuously beneath the measuring arrangement (laser line, CCD chip) therethrough. Simultaneously with every flash of light, a measurement. In particular, the measuring table moves with controlled / monitored speed that is coordinated with the flash control. In preferably regular intervals (time or travel of the table), a flash is emitted while a Field of the CCD chip read. This signal is passed to the capture card and evaluated using special software. The flash time is so short that a "shake" that might result from the continuous table movement is negligible.

5 With the configuration disclosed in WO 02/39056 Al, the measurement method is accelerated by a factor of 5, since the acceleration and deceleration of the table omitted and the light flashes can be clocked so quickly that can be read with fields. A further advantage is that the control can be more cost-effective, since only a uniform feed guarantees and set no exact rest position

L 0 must. A further advantage is that the existing opto-mechanical assemblies can be used / used, since the present innovation in terms of control, regulation and software can be implemented for components or there. It is also advantageous that the flash is used much more intensively than the laser signal previously used, whereby the measurement can be performed even in daylight and the measuring space is not

must be .5 darkened what the work and their effort and time required is substantially reduced especially when changing from measurement objects.

In addition to those described above and above technical specifications on "Stroboskoplaser" etc. are within the scope of WO 02/39056 AI further mechanical design 0 guides who alone in their concept and concrete configurations and operational methods in combination and separately, are be regarded as worthy of protection and protectable.

Especially compared to the technical state of the apparatus for producing a tooth 5 and Damages according to EP 98115809.0 includes the WO 02/39056 Al a number of concepts and designs which reduce a corresponding device in the production drastically and make functionally reliable. Furthermore, these aspects of WO 02/39056 AI advantageous and preferred further developments and combinations of the DE 44 39 307 Al and DE 197 21 688 AI technology disclosed represents the entire contents as well as the 0 Offenlegungsschrift to EP 98115809.0 extent mere avoid identical repetition in the present documents in the latter of which is hereby incorporated by reference vollumfäng- Lich. The individual features and feature combinations are particularly, but not necessarily or exclusively to combine technology with the above-explained stroboscopic. 5

For example, based on and / or in combination with the foregoing, from PCT / DE 01/04177 (International Publication Number WO 02/39056 AI), however, not limited to such a base or combination, the present invention further improvements in devices and methods for production of dental prostheses to the destination.

To achieve this objective are provided by the present invention, in particular:

Devices and methods for partially or fully automatic edge recognition of inlay masterbatch preparations, and

Devices and methods for producing complex denture designs.

The advantages of these devices and methods of the invention are particularly at Ablaufs- and / or Aufwandsop Lrnierung.

In particular, and primarily, but not limited to, technical improvements to the technical teaching in EP 98115809.0 and WO 02/39056 AI be created with any aspect of the present invention. However, it is emphasized again that institutions and processes for production of dental prostheses in particular even without the base and / or combined with the technology of the cited prior art to the invention to realize and therefore are worthy of protection.

Devices and methods for manufacturing dental prostheses according to the invention are specified in the independent claims. Further preferred and advantageous embodiments of the invention result from the individual claims and their combinations.

In particular, the present invention Oberflachenerfassungs- and / or generation devices, with devices for detection of 3D data of at least one denture base object such as a tooth stump or implant post, and a vicinity thereof, and with means for data-moderate production and manufacture a dental prosthesis including the 3D- data of the denture base object, which are further provided:

Means for detecting and / or determining an insertion direction of the dental prosthesis, which is pushed onto the denture base object, and

Means for identifying and producing a primary part that is pushed onto the denture base object before the denture part and for the dental prosthesis a GE wished insertion direction arises, which is different from the direction of insertion, which is given for moving the primary section onto the denture base object, and that the devices are designed for data-moderate production and manufacture of a dental prosthesis, the latter to produce incorporating the 3D data of the primary part and 5 produce.

Preferred developments of which are such that further combination rope directions are provided which are designed to Zusarmnenführen 3D data of at least 2 denture base objects in the form, location and position to each other, and that the devices for L are designed 0 manufacturing a dental prosthesis, a common tooth replacement part for produce all denture base objects involved.

Furthermore, it is preferable if the detection of the shape, position and / or attitude of each denture base object and / or each primary part contactless Erfassungsein- .5 contained directions.

In yet another advantageous embodiment of the present invention, it is provided that for the identification and / or definition and / or production and / or merging of measurement data, 3D data and -Datensätzen, archive and / or specification data

And 0 or -datensätzen and insertion directions, electronic processing devices are provided, which processor means, memory devices, interfaces and controllers are associated, or where processor devices, memory devices, interfaces and controllers are included. Alternatively or zusätzhch can be provided advantageously that the bodies referred to WO 02/39056 Al are included,

5 and / or in that CAD / CAM devices are contained.

Within the scope of the present invention may further be provided that remote data transmission devices are included, so that the detection means and in any case the production facilities and / or the manufacturing facilities of one another 0 are locally separated can be opened, in which case a plurality of established locally separated detectors with a central generator coupled is.

By the invention are further provided Oberflachenerfassungs- and / or production method, which from a denture base object such as a tooth stump or hnplantatpfo- 5 first, and an environment of 3D data is captured and then based on this SD

Data of the denture base object, a fact aufzuschiebendes dental prosthesis is produced, before the production of the dental prosthesis, a direction of insertion of the dental prosthesis is determined on the denture base object and / or determined on the basis of these 3D data th of the denture base object, a primary part is determined and produced, with which for the dental prosthesis, a desired direction of insertion is provided which is different from the insertion direction, which for postponing the primary part is placed on the denture base object, and the dental prosthesis is suitable in terms of data generated and made to slide onto the primary part on the basis of the 3D data.

Prefer can be furthermore provided that 3D data are detected by at least 2 denture base objects in the form, location and position to each other, and that a common denture part for all involved denture base objects in terms of data generated and produced, preferably 3D data of at least 2 denture base objects in will form, location and position each individually captured and then merged.

Further, in the Oberflachenerfassungs- and / or production method of the invention to provide for the detection of shape, position and / or attitude of each denture base object and / or each primary part is contactless, and / or that devices according to WO 02/39056 AI used will.

In further preferred embodiments can be provided that measurement data, 3D data th and -Datensätze, archive and / or specification data and / or -datensätze and insertion directions are used in particular for measuring devices and / or storage devices, preferably data of prefabricated parts from databases are used.

Furthermore it is within the preferred scope of the present invention, when CAD / CAM methods are contained, and / or if the detection of objects and particularly their 3D data and -Datensätzen interposition of remote data transmission locally separated from the production of primary parts and / or dental prostheses, whereby preferably a detection at a plurality of locations by remote data transmission to a central collection and / or production is coupled.

1 combination with the above embodiments of Oberflachenerfassungs- and / or production facilities, or even on its own, the invention provides furthermore such Oberflachenerfassungs- and / or production facilities in which means are provided for partially or fully automatic edge detection hüaypräparationen, and / or where means are provided for producing complex denture designs. Analog containing the above Oberflachenerfassungs- and / or production method of the present invention either individually or in combination with the above-mentioned variants such Oberflachenerfassungs- and / or production methods method steps with comparison to partially or fully automatic edge detection lhlaypräparationen, and / or process steps for producing complex denture designs.

Moreover, the invention contains additional variants and aspects that present in the description and the appended drawings are disclosed with reference to specific embodiments or in the form of general information. All these variants and aspects are each one hand as disclosed on its own and, secondly, separately disclosed in any combination with other aspects and variations to look at, and on each variant and every aspect alone, and any combination of aspects and variants is by the present disclosure, the basis for created a patenting.

The invention is merely exemplary described in more detail by means of embodiments with reference to the drawing, in which:

Fig. 1 a shows a schematic top view of a jaw with marked scan stripes according to the prior art,

Fig. Lb is a schematic front view of a jaw with marked scan stripes in FIG. La is,

Fig. Lc shows a schematic plan view of a jaw with marked scan stripes according to WO 02/39056 AI,

Fig. Ld is a schematic front view of a jaw with marked scan stripes in Fig. Lc,

FIG. 2a is a perspective schematic view of a measurement object in the form of a tooth,

FIG. 2b shows a schematic view of the measurement object from FIG. 2a is with drawn scan stripes according to the prior art,

Fig. 2c is a schematic view of an image signal of a scanning line in FIG. 2b, Fig. 2d is a schematic view of the measurement object from FIG. 2a is with drawn scan stripes according to WO 02/39056 Al,

5 Fig. 2e is a schematic view of an image signal of a scanning line from Fig. 2d,

Fig. 3 is a schematic perspective view of an embodiment of a

Surface detecting device according to WO 02/39056 AI obliquely from above,

10

Fig. 4 is an enlarged view of a portion of FIG. 3,

a schematic perspective view of the embodiment of the surface sensing device of FIG. 3 from above in another input L 5 position and increased Fig. 5 obliquely,

. 3 is obliquely increased from below and Fig. 6 is a schematic perspective view of the embodiment of the surface sensing device from the FIG,

! 0 Fig. 7 is a schematic perspective view of the exemplary embodiment of the surface sensing device of FIG. 3 an angle from below and enlarged and from the view of FIG. 6 is slightly rotated,

Fig. 8 is a graphical representation of a jaw drawn schematically with layers

: 5 scanned from gauges on the basis of WO 02/39056 according to the AI

Data is

Fig. 9 is a graphical representation of the jaw of FIG. 8 in accordance with the

WO 02/39056 AI machined teeth, 0

Fig. 10 is a partial schematic view of a jaw for explaining another

Aspect of WO 02/39056 AI,

FIG. 11 is a schematic side view of a chewing or Bißsimulators to Verdeutli- 5 chung another aspect of WO 02/39056 Al, a schematic side view of a jaw from the Fig. 11, Fig. 12 in a surface detecting device,

FIG. 13 is a schematic view of an embodiment of a detection device Oberflächenerfas- 5 according to WO 02/39056 AI when scanning a full

Occlusal surface a tooth and a sketch of a resultant measurement signal is,

FIG. 14 is a schematic view of an embodiment of a detection device Oberflächenerfas- 10 according to WO 02/39056 AI when scanning an occlusal surface a tooth with a hole to insert a hilays and a sketch of a resulting n measurement signal when scanning at the edge of the hole,

FIG. 15 schematic illustrations of exemplary waveforms of a signal 1, which results from L 5 of scanning an area of ​​a signal 2 that is obtained when it reaches an edge of a hole in a surface, and a signal 3, the directly at an edge a hole is obtained in a surface,

FIG. 16 is an example of a graph of measurement results of detection! 0 a tooth surface,

Fig. 17 are schematic representations of two steps in the manufacture of an inlay according to one embodiment,

15 Fig. 18 are schematic illustrations of three other process steps in the manufacture of an inlay according to the embodiment from Fig. 17,

Fig. 19 is a schematic representation of still another process step in the manufacture of an inlay according to the embodiment from FIG. 17, 0

FIG. 20a / b show schematic representations of a simplification in the manufacture of dental prostheses according to another aspect of the present invention,

Fig. 21 A / B are schematic representations of a simplification in the manufacture of dental prosthetic 5 set in accordance with yet another aspect of the present invention, and Fig. 22 is a schematic representation of the result of the procedure according to Fig. 21 A / B.

In the various figures of the drawing identical or similar or identical or similar 5-acting parts are provided with the same numerals or presented on a comparable, so that parts and combinations, functions and modes of operation for an expert even from looking at the figures of the drawing alone, whose Comparison and / or the details described below, if necessary, develop alone readily, even if no references between individual figures and / or between figures and text explicitly give reasonable 10 or illustrated.

Referring first to Figures 1 to 12, the technical teachings according to the disclosure of WO 02/39056 AI will be explained, in particular the function of a corresponding device and method as well as principles in the manufacture of dentures

15 sentence to understand. This technology according to WO 02/39056 AI can serve as a basis for any aspect of the present invention and can be combined with the latter, but this is always not necessary for the implementation of the various aspects of the present invention. The latter can be implemented and used without the technology according to WO 02/39056 AI in conjunction with other initiatives under each of its aspects

20 the.

In Figs. 1 and 2 schematically shows a scan of a mandible K in a plan view and a front view clarifies. For example, five gauges SI, S2, S3, S4 and S5 are adjacent detected. The five gauges SI to S5 overlap in areas B, which in

. 25 of Figure la shown hatched and in Figure lb for clarity are omitted. Fig. Lb is used only to illustrate the location of the gages SI to S5 in the front view of the jaw K and the direction of the scanning beam according to arrows P. The overlapping areas B allow the joining of the data of the individual gauges by Matching- process into an overall picture of the jaw K.

, 0

A variant of the preceding technology according to WO 02/39056 AI is shown in Figs. Lc and ld also shown in a plan view and a front view. This methodology and with relevant bodies gauges S6, S7, S8, S9, S10, SI 1, S12 and S13 are generated, however, which consist only of so-called fields, so that although more measuring ä 5 stripes as in the variant according are FIGS. la and lb produced and processed, these

but gages make do with a much smaller amount of data. The position of the gauge S6 to S13 is in the plan view of Fig. Lc shown with respect to the jaw K. Thieves- Radiation directions are exemplified by arrows Pl, P2, P3 and P4 for the gauge S6, SI 1, S13 or S10 in Fig. Ld schematically. In FIG. Lc in turn overlap regions B of the individual adjacent gages are hatched located. By respect to the prior art modified radiation directions for the single 5 individual gauges accurate data of the jaw K are obtained, with a lesser

Data and processing volume as in the prior art by using only fields.

A single measurement object in the form of a tooth Z is schematically shown in a perspective view 10 in FIG. 2a shows how it is installed on a measuring pan M, which for this

Purpose is for example filled with a clay, in which the tooth Z with its lower end (not visible) is plugged.

For this measurement object Z 2c the location of gauges or measuring lines S diagrammatic L 5 is in the FIGS. Cally, and Fig. 2c shows the signal diagram for a measuring tape or a

Measuring line Sx, in which only a measurement point Dx is obtained. In Fig. 2b is still the readout direction (row direction) shown by the arrow AI. The sum of all gauges or measuring lines S is the area of ​​a chip C as image capture device, which is, for example, trading a CCD chip or any other camera device - 0 your can.

In contrast, a plurality of measurement points, for example, Dyl and Dy2 or Dza is in a measuring line or in a measuring strip S according to WO 02/39056 AI to Dzn obtained, as shown in FIGS. 2d and clarify 2e, which are analogous to representations to Fig. 2b and 2c trade

15 delt. The readout direction is shown by the arrow A2 in FIG. 2d and the chip C, as well as the position of the gauges or measuring lines S are thus rotated relative to the prior art by 90 °. By this arrangement, two measuring points Dyl and Dy2 be obtained in the measuring line Sy. The measurement in the line Sz even leads to a plurality of measurement points to Dza Dzn. then preferably for evaluation by means of software, the Chi-

0 panordnung as in the prior art (see Fig. 2b) back-calculated and simulated. However, the read-out direction so again obtained as in the prior art includes turn each line or row several measuring points, which can be computationally detected as first 1 point, then 2 points, etc. By this aspect of WO 02/39056 AI be with less effort nevertheless receive more information by consulting only of fields, so

5 that the accuracy of the WO 02/39056 AI compared to the prior art is still increasing. hi Figs. 3 and 4, which is an enlarged view of part of Fig. 3, a surface detection means 1 is illustrated with a laser optical system 4, from which extends a line laser beam L. The intersection of the laser line beam L with the rectangular, emanating from the lens frame F defines the measuring field F. Each object to be measured must be driven by these 5 ses measuring field F. This detail also applies to the embodiments according to FIGS. 5, 6 and 7, even though it is not shown there for purposes of illustration of the other features. In this respect was to avoid repetition in the subsequent addressing Figures 5, 6 and 7 not received it. the use of this technique is, however, obvious to those skilled in the art and there used to detect 10 and understand.

Subsequently, unless the embodiment is identical or similar, to avoid repetition, also to Figs. 5, 6 and 7 reference.

L 5 The "passing through" the measuring field F is a means Lmearführung 83 (or reference number 4 'in FIGS. 5 and 6) accomplished. A plurality of single objects, such as in particular teeth, be able to position, under the measuring field, a rotary turntable 33 (or reference numeral 5 in Figs. 5, 6 and 7) of the measuring pot 84 for measuring pot 84 (in FIG. 5, the measuring pots with the reference numeral 8 denotes). In the Fig. 3 are exemplary only two measuring pots 84

.0 Drawn (also in Fig. 5 for example, only two measuring pots 8), for example, seven

Piece can be fitted in total.

If a tipped with a tooth measuring pot 84 (or 8 in FIG. 5) arrived in the measurement field, the rotation of the large turntable stops 33 (or 5 in FIGS. 5, 6 and 7). The Drehtel-! 5 1er 33 (or 5 in Figs. 5, 6 and 7) only serves for positioning the fitted with individual teeth 84 pots (or 8 in Fig. 5) and / or of a jaw, which will be discussed later. The measurement itself is carried out, as explained above, by means of a linear movement of the measuring table 53 on the Linearlagem 83 or 4 '(Fig. 5).

10 The result is a gage, which sees only one side of the tooth to be measured. To collect additional gauges from other angles, the pot in the measuring range located can 84 (or 8 in FIG. 5) are rotated between measurements an own axis. This leads, for example to eight views and the pot 84 (or 8 in Fig. 5) is rotated between the measurements by 45 ° about its own axis. a process which produces

5 thus hen in such a case, eight measuring strip of several views. Parts of the surface information obtained occur in several gauges. By means of these overlapping areas can for example suitable means or method in the form se an already previously explained matching software make up each gauge into a complete 3D surface image of a single tooth with high measurement accuracy.

5 These data can now already be milled the lhnendatensatz a dental crown. Next

Single crowns can also multiple teeth are combined to form a bridge. To be able to mill bridges, the spatial position of several single crowns must be mutually detected as quickly as possible. Given a complete jaw model is measured in the same manner as the single tooth. It is placed on an additional rotary table 26 which is the rotating disk 5 is provided in FIG. 5 in L0.

The result is seen in the image of Fig. 8. The direction of the measuring strips are five as white lines (indicated by way of example are the designations of II, 12 and 13 and in the rest only the lines are drawn) can be seen. This measurement result may not contain all data L 5 of the jaw, but many data are outside enough available to make this automatically with the data of the individual dies can.

After that begins with proper facilities or procedurally a software scan, which brings the data to match. The result can be seen in the diagram of FIG. 9.! 0 two highlighted records of the first tooth in the top left and the next tooth in the jaw model after the gap represent the referenced single teeth.

Following more improvements are illustrated and explained.

5 Referring to FIGS. 5, 6 and 7, wherein representing the FIG. 5 is a top perspective view, and FIGS. 6 and 7 are perspective bottom views of the same device, various measuring pots 8 is a turntable 5 to for individual teeth in the laser measuring assembly (see FIG. 3) to be transported. This rotary table 5 is equipped with a friction wheel 15 (see Fig. 6) is driven. This friction wheel 15 by means of a spring plate 24 (see Fig. 6)

0 frontally pressed against the turntable. 5 This is a possible wear a rubber mioberfläche or offset of the friction wheel Gunimimaterials 15th

The position of the turntable 5 is detected by an encoder disc 28th In this case, the disc is of sheet metal 28 (see Fig. 6) is executed, the slots 100 has exactly at the 5 positions at which are required stop positions. The slots 100 are detected by means of a photocell 33 (see Fig. 6). In a suitable device or procedurally control software evaluates the light barrier signals and starts / stops the Table or plate 5. The turntable 5 includes seven positions / pots for single teeth. Should one work more than seven preparations / teeth included (maximum of 14 per jaw is possible), so the work can be scanned in 2 batches.

5 advantages of the above-described devices: very low production costs, available everywhere, no wear smoothness 10 - exact position knowledge

Alternatively, the friction wheel 15 can be used for example a pulley or a toothed belt.

L 5 Other measures also necessary to reduce the frame construction can be achieved. Given the context of the device / device (3 and 4 refer to FIG.) Is on two guide rods 83 suspended. The complete frame of the device is therefore solely of two side members 2 (see Figs. 3 and 4), the guide rods 83 (compare Figs. 3 and 4) as well as an optical disk (Fig. 5). Inaccuracies, the mechanical through

! 0 execution caused the linear rod guide are compensated by software (eg by so-called "look-up tables"). A precision spindle 94 (see Fig. 3 and 4) is mounted on the side of the moving table, on which the laser array is situated. Angle error of the spindle thereby affect less. The advantages of this configuration are low cost, high precision, significantly lower transport weight and

5 smaller design.

A further improvement over the state of the art prior to the WO 02/39056 Al can be made for electric protection of the laser diode. For this purpose, the laser optics, the laser diode and the drive electronics for the laser diode are accommodated together in a metal casing 0th It follows as advantages a better protection for the diode, in particular to prevent electrostatic charging from the outside, as well as a fast exchange in case of repairs.

Furthermore, according to WO 02/39056 AI against the state of the art improvements 5 gen possible in Einjustierung jawbone models. To be able to be measured einjustieren jaw models optimally to the measurement range, one needs a template 54 (see Fig. 5). Since there are jaw models with different diameters (eg for children and adults adult), the jaw model must be adjusted according to the size. For this purpose, for example, 3 different Justagekonturen I, II and IU to the transparent Plexiglas disk from which the mask 54 is preferably formed, engraved or otherwise suitably be applied. 5

Furthermore can be to achieve as 45 ° further improvements in the rotation of the individual pots. The turntable 5 (Fig. 5, 6 and 7) transports the individual pots 8 15. While the turntable 5 moves to the measuring position in front of the friction wheel, the frictional contact of the pot 8 is automatically made to the friction wheel 15th The novelty is that the friction wheel 15 L 0 is made of rubber or at least a rubber outer surface, the counter gear 7 but made of solid metal. This has the advantages of a lower price, an easy manufacturing and a long service life.

A further aspect of WO 02/39056 AI will be explained with reference to Fig. 10. L5 Shown are 3 dental stumps 101, each consisting of a beschhffenen part 101a and a residual tooth portion 101b. The grinding is done manually by a dentist and forcibly leads to undercuts 102 which vary when viewed several adjacent individual teeth or their stumps 101 in the form, location and size.

! 0 to stumps 101 to establish a desired prosthesis 103 whose overall silhouette is shown merely as an example in the FIG. 10 leftmost shown Stumpf 101 phantom 101 is a so-called cap 104 initially prepared for at least a stump that is usually in exactly an insertion or mounting direction according to the arrow e over the stump can be pushed 101. It is not possible for the copings

5 chen 104 undercuts 102 fills because a postponement would not be possible otherwise. 1h the case shown in connection with the present embodiment are 3 stumps 101 side by side and are in accordance with 3 cap 104 combined to form a bridge, by respective adjacent cap 104 are connected by means of a respective web 105th

0

When designing the totality of cap 104 an optimal insertion or mounting direction must now be determined at which the undercuts 102, for example, by respect to the other stumps 101 skew of a cone 101, as shown in FIG. 10 at the rightmost stump 101 is shown, which form can be minimized.

5

This can be carried out by means of the 3D data obtained from the dies 1 in advance. For this purpose, as shown in the rest already in the present documents in detail, a 3D data by scanning according to WO 02/39056 AI created and used for model calculations to determine the optimal insertion or mounting direction. In this aspect of the method according to WO 02/39056 AI successively different Aufsteckrichtungen be taken as a basis and for the respective results of the "dead space", which is determined by 5 the undercuts 102, established. The optimal insertion direction A is thereby obtained that the variation with the smallest "dead space" is determined.

In particular, a skew of a remaining stump 101, but also due to other machining inaccuracies by the dentist there may be cases in which a

L 0 cap based on a residual tooth portion 101b places a wall thickness of 0 mm would have. In such a case is not generally a prosthesis manufactured. It must for the rest of the procedure first and costly reworking of a corresponding tooth stump 101 carried out, which works not certainly lead to a useful result.

.5

In addition to optimizing the insertion direction E in accordance with WO 02/39056 AI to minimize the undercuts or "dead spaces" 102, WO 02/39056 AI can be used to further improve the procedure for the production of dental prostheses. By means of the sensed (scanned) 3D data can be recommendations for the attending

! Create 0 dentist through which reworks the stumps improvement of fit and stability of the manufactured prosthesis, including significant reduction in the undercuts or "dead spaces" 102 can be achieved more. For this purpose, the method according to WO 02/39056 AI will be extended to that one regarding a detected SD data set of a tooth stub 101 or in combination several tooth stumps 101

5 ne optimum mounting direction for cap 104, in particular a connection of several

Copings is calculated 104 to a bridge 106, under the proviso that the form of changes to the tooth stump / the tooth stumps 101 are possible. The method and system according to WO 02/39056 AI thus serves not only to determine an adjustment to prevailing circumstances for the manufacture and attachment of cap 104 or bridges 106, but

0 the also to change the circumstances given in order, ie the prosthesis to optimize the result. For example, it can be provided in the method and system that provides a graphical display of the stumps, including eg specially colored areas is included for reworking, which serves as a basis for a dialogue between a dental laboratory and a dentist.

5

From WO 02/39056 Al with the above-stated characteristics is provided advantageously furthermore the opportunity for a quality assurance einschließhch par- Special Assignments unique treatment outcomes for dentist grinds the tooth stumps cope, or dental laboratory, which draws up the cap crowns / bridges. Disputes over inaccurate fit can thus be first clarified clearly. Advantageously can be exploited furthermore, that all initial data 5 as well as data from between states seamlessly, anytime can be archived accessible again in a particularly simple manner.

The above with reference to Fig. 10 explained method and its variants is equivalent to correspondingly formed means by which these procedures L can be 0 made, so that even those facilities that the person skilled in the illustrations of the method in its general and specific forms are readily clear immediately disclosed as in the present documents are valid.

Another aspect of WO 02/39056 AI is concerned with the automatic generation of .5 chewing surface of a dental prosthesis, taking into account the opposing bite (upper jaw to the lower jaw). . Verdeutlichten in which in Figures 11 and 12 embodiment, the steps described below are provided:

1. Inserting and adjusting of upper and lower jaws 206 and 207 in a Kausimula-

: 0 tor or articulator 200 with Einstellgelenken 201 until the bite situation is simulated, according to the Figure 11. The receptacles 202 / 202a and 203 / 203a of upper and lower jaws 206 and 207 have a detectable spatial position.. Given the Aufiiahmen 202 / 202a and 203 / 203a as each a defined zero position or a zero position have each other. Each receptacle 202 / 202a and 203/203 a is in two parts and each consist of a Aufhahmenba-

5 sis 202a and 203a, which is permanently installed on the articulator 200, and a jaw holder

202 and 203, respectively, is attached to the each of the upper jaw 206 and lower jaw 207th

2. Reading / Recording as 6 degrees of freedom: 0 2 possibilities: - Manually read a scale

- Reading from encoders With the articulator 200 is under consideration of the maxilla and mandible 206 and 207, the optimum / correct position of Aufiiahmen 202 / 202a and 203 / 203a, ie actually the respective Aufhahmenbasis 202a and 203a determined, according to the FIG. 11. 5 This can at it on the articulator 200 provided and attached scale (not shown) or by means of linear and angle encoders (not shown) automatically happen. To note is still that of the articulator 200 preferably allows a setting of upper and lower jaws 206 and 207 to each other in preferably six degrees of freedom.

3. Install the corresponding jaw holder 202 or 203 with the upper jaw model 206 or the lower jaw model 207 in a holder 205 analogous to the Aufhahmeba- sen 202a and 203a of the scanner 204 shown in FIG. 12, wherein the spatial position of the holder 205 to the measuring system or the Data System is the scanner 204 known.

then a referencing 4. Software.

10

5. - Proposal from Database occlusal surface (eg, incisor)

- Automatic adjustment of the database model of the antagonist situation

- Search of contact points with Hülldaten

- Merging occlusal surface and interior record

15

Alternative: jaw position "articulated" capture by scanning a portion of the articulated jaw and subsequent matching of the maxilla and mandible data with these partial data sets to produce the bite position.

20 Also, the above with reference to Figs. 11 and 12 described aspect of the

WO 02/39056 AI is to be regarded as procedural and device standpoint disclosed because one skilled adequate facilities in general or specific configuration readily from the foregoing explanations.

- 5 The present invention is explained in detail below in terms of their individual aspects, which one skilled in the individual is significantly each readily what information and representations are to be understood merely as examples. Further recognizes an expert without special representations advantageous combinations and their configurations and effects of the following details in the synopsis and in cooperation

.0 With the prior described above and so far as also shown in the drawing, the

Technology, which is also part of the invention substantially disclosure of the present documents. Also go for a professional analogies between devices and methods of the present invention evident from the entire documentation provided without separate respective descriptions and illustrations of devices and

15 process, serving the same purpose, would be required. It is essential, however, that the hereinafter set forth various aspects of the present invention with particular the above-discussed prior art, especially as described in WO 02/39056 AI not, to be combined necessarily, but can also be implemented with any other suitable technique. So surface detection technologies using mechanical scanning, other optical scanning and procedures and any other suitable scanning technique with the various aspects of the present invention are combined 5 bar. For material processing, in particular with regard to the formation of dental prostheses, other techniques, such as casting techniques, Lasertsintern etc. in connection with the various aspects of the present invention are useful in addition to the milling technology.

According to the invention be provided with a first aspect of the present invention in particular 0 devices and methods for partially or fully automatic edge detection

I laypräparationen and go even further for the production of inlays as dental prostheses. A corresponding device is obtained for the skilled person from the following descriptions and references therein drawing figures readily.

15 In the preparation of the said dental prostheses, namely preferably dental inlays, with cognate other tooth replacement parts to be well with covered, by means of the CAD / CAM method is the particular difficulty, a 3D surface data set of a prepared by the dentist for an inlay tooth stump by software so analyze that is automatically detected by the software, where the border between fertigendem

20 Inlay and remaining Zahnsubtanz runs. Characteristic of an inlay preparation is the sharp edge of the preparation as 13 and 14 is illustrated by the comparison of Fig.. The method described below according to the invention, as well as implying for any skilled person resulting corresponding device includes the automatic detection and removal of these frontier.

- 5

Already at a measurement method, for example by laser as in the prior art according to WO 02/39056 Al and DE 19721688 Al, the evaluated signal light on the camera chip contains a substantial for the process described information: During the laser line contacts a surface portion containing no edge , as illustrated in FIG. 13

! is 0, the full width of the laser beam is reflected. In the Fig. 13 is a tooth Z at a

Tooth surface ZO shown, on which a laser beam LS from a laser light source LQ with a beam width LB is incident. The reflected beam RS case has a width LBR1 with which he strikes a CCD chip CCD as detector. However, if the laser beam LS meets an edge, as can be seen from FIG. 14, nurmehr a part of the width of the LBR2

, 5 laser beam LS reflected as reflected beam RS for CCD chip CCD. For example, the width LBR2 of the reflected laser beam at an edge of K RS with respect to the situation at a reflection without edge LBR2 = VT. LBR1 how the representation of the corresponding Si- signals. 13 and 14 illustrated respectively in the lower half of Fig. . Likewise, the shape of the signal to be evaluated, as well as the representation of the corresponding signals in each case in the lower half of Figure 13 and 14 illustrates changes: in the area is (.. See Figure 13) a symmetrical Gaussian curve described, the signal runs region of an edge 5 asymmetrically (see. Fig. 14), as shown in Fig. 15 it can be seen in the schematic waveform of a signal 1, of the scanning of a surface resulting (analogous to FIG. 13), a signal 2, which is obtained when reaching an edge of a hole in an area, and outlined a signal 3, the right to an edge of a hole or here specifically tivity a Zahnka- ZK is obtained in an area (analogous to FIG. 14). The information from Breitenände- 0 rank and shape of the signal can for optimal determination of the actual margin of

Edge K are processed. By repeated measurement of edge K of several solid angles with the method described, this information can be checked against each other and determined by averaging at the edges on your final form by methods Matching-.

L5

A scanned in this way 3D data such as a Zahninlaykavität which 3D data set was weitervearbeitet example by suitable Flächentriangulationsmethoden typically contains surfaces which are described by at least three or more vertices. These areas are linked by common edges or points, as the graph of FIG. 16 is illustrated. The described method for partially or fully automatic edge detection and separation now takes place by the a priori information that edges of preparations have superior, sharp bends or angles.

If now at all points of the surface records the average point Normal calculated from all adjacent surface records, so can be set in connection later by a differential analysis of the point Normal of the normals of the surface records a value of curvature. The next step is trying to boost by finding neighborhood relations the value with respect to various criteria and to classify. One criterion could, for example, the neighborhood relations in terms of a continuous line. Thus, the basic building block for the automatic edge detection is set.

By software, the edges are now optimally analyzed, identified and brought together to form a contiguous edge line, as in the method step illustrations of FIGS. 17 and 18 is shown schematically. For subsequent manufacture of dental inlays only those that are within an edge contour surface segments are used. In FIG. 17, a complete record of a stump preparation SP with a prepared for an inlay tooth cavity ZK and their edges or edges K is shown schematically as (1) to simplify only a side view shown, which is however Wirkhchkeit but 5 overall by a 3D data set is, therefore, a three-dimensional data-transmitting representation of the abutment preparation.

As (2) 17 is in the FIG., The step of Erker Mens and Abtremiens the edges or edges K illustrated only schematically, again using the two-dimensional view 10 for the 3D data set from step (1) of FIG. 17 is representative , The edge detection is carried out for example as shown in relation to FIGS. 13 to 16 described and shown in these figures.

In FIG. 18, the step (3) is still 5 tation of the complete 3D data set illustrated schematically for convenience as two-dimensional representative office, where, for example by importing a database occlusal surface KF the missing side of the produced and later inlays to the data of prepared tooth cavity ZK is added that determines the shapes and dimensions of the inlay in the rest. In this step, for example, stored in a database Kauflächendaten (eg for the 4th premolar accident - 0 mandible) are imported into the complete data set, or before treatment measured by the dentist original tooth form data is imported, or the measured shape data of a Zal technician individually modeled for the inlay in wax occlusal surface imported.

\ 5 in step (4) of FIG. 18, the data from the imported purchasing face KF be linked to the data of the prepared tooth cavity ZK, which in turn is shown representative of the respective 3D data sets from buy face KF and dental cavity ZK on two-dimensional schematic example. Agent, for example an automatic Anpassimgsfunktion example by means Matching- algorithm are the Kauflächendaten optimally to the edge

: 0 adapted and sent to the border.

Finally, in step (5) takes place in FIG. 18 is a morphing of the occlusal surface and a removal of the supernatant, so that a finished lhlaydatensatz IS is obtained which only for simplicity further only as a two-dimensional representative of the actual data with the full 3D 5 data is shown. The occlusal surface as can using morphing to the

Counterbite be adjusted. The resulting 3D data can be used for CNC production of hi- layteilen. It is particularly advantageous for the precision of inlays I, if after completion of milling with a milling tool FW remaining holding web HS of inlays I positioned in the occlusal surface KF, as illustrated by the FIG. 19.

5 According to the invention there is provided in a second aspect, in particular to a method for

Producing complex denture designs. A corresponding device is obtained for the skilled person from the following descriptions and references therein drawing figures readily.

L 0 In the conventional dental technology often prefabricated parts. In this example, the implant post, Abutments and parts are mechanically connected to the conventional dentures.

The invention allows, for example, with adhesive to avoid the process of assembling a plurality of pre-assembled .5 parts. In addition to cost considerations, this results in an improved health impact for the patient, since only one material is inserted into the body. Fe it is a longer life and greater overall precision possible.

0 One of preferential part of the presently treated aspect of the invention is that 3D CAD design data of a pre-fabricated dental prosthesis or of structural elements or fasteners of dental prostheses and 3D measurements of tooth stumps and / or tooth shapes (Supra surfaces) are merged.

5 Fig. 20a shows an example of a conventional final situation, and Fig. 20B shows a situation after the final product of the present invention.

The process steps:

0 1. A preparation of a tooth or several tooth stumps or a tooth or teeth is further processed measured and data technology, for example, a triangulated surface model.

2. From a 3D finished parts library is a design data set, such as a bed load 5 part, imported implant post or abutments in the record. 3. The measurement data of the tooth stump or tooth and the parts data of the pre-assembled parts are joined together in software taking into account the dental situation. This is done taking into account the circumstances of the dental situation of the patient, in particular the so-called "insertion direction". For example, if several tooth stumps are to be supplied together with a dental bridge, the bridge must simultaneously be pushed on all the stumps.

4. The software can be so pronounced that the design data (eg, height and width) can still be modified.

5. After the measurement and design data were merged and intersections from the records have been deleted, the data for production in a CNC milling machine can be used. After the parts were prepared according to the method described, the final product is shown in FIG. 20b before.

The method may apply in the light of the dental situation of the patient application. In addition to measurement data of the alveolar ridge also measured data of adjacent teeth can be displayed.

A particular advantage of this method is that the direction of insertion can be considered in the design of attachment parts. The mixture of design data, CAD design tools, 3D matching tools and data processing results in a variety of technical possibilities and processes.

Another example of the invention is illustrated in Figures 21a and 21 b as well as the 22nd:

Figs. 21a and 21b show an implant abutment PF (with abutment) and a stub ST, to be crowned together by a bridge. Merely for completeness is still pointed out that instead of the implant pillar PF also another stump can form the basis for further action, or a plurality of parts as a two may be present, which may be as implant abutments or tooth stumps arbitrarily. The situation is measured for example by means of technology according to the prior art, in particular WO 02/39056 AI to its location and the tooth stump to obtain 3D data sets of the implant pillar PF in position and shape. Erfoderlichenfalls can also nplatatpfeiler be grasped in its form, if this is not a ready-made part, the 3D data are already in the system, so that only its location needs to be determined. As can be seen from Figs. 21a and 21b as well as 22, but there are two different insertion directions. (1 insertion direction by the stump ST and insertion direction 2 through the implant pillar PF). To a common bridge to the implant abutments PF and 5 to set the stump ST or for example two stumps, but a common path to be created. In Figs. 21a, 21b and 22, the insertion direction 1 is for this purpose chosen, which can be realized fully automatically by the software used, for example, but also GE semi-automatically selecting and adjustability within the Software predetermined limits by an operator

L 0 selected and can be set for the further procedure. Also possible in principle is a purely manual selection of the insertion direction, which for complicated arrangements in particular allows for a strong involvement of craftsmanship expertise. Thus, preferably automatically, a proposal by the software take place, after which in a subsequent step, a semi-automatic adjustment by a user within the

, Can be carried out 5 Software predetermined limits, and finally, if so no satisfactory and / or feasible solution can be achieved, ultimately can be done purely manual setting.

valid means of knowledge of the insertion directions, a software to calculate a primary part PT in accordance with i 0 Fig. 21b, which acts for the unification of the two directions of insertion as an adapter to the implant pillar PF, so that for the latter, the insertion direction 2. It borders for the primary part PT or the adapter can be fully automated by the software or semi-automatically by certain margins specified within limits and can be adjusted, or be set manually by a user of the edges! 5 are freely given. In particular, a cutting direction, the software can also be equal to specifically defined as a function of the direction of insertion, but overall considering various parameters for the dental prosthesis.

Thus internal record the measurement of the stump ST including its environment is initially 0 environment U used in the implant pillar PF is. Then as the design data rate of the implant post PF is loaded (with abutment) and means Matching- process the data spatially associated. This serves to ensure that the data of the design data set for the CNC machining of the part to be used, since a higher precision of the final product can be obtained, as in the processing of measured data 5 th. The outer contour of the primary part can be produced as artificial or CAD can be constructed., where one or the specified by the stump ST insertion direction 1 is taken as a basis. Thus, an individual, mechanically precise primary part are made. In the next step the primary parts and tooth stump together measured and determines the internal data for the tooth replacement parts to be disposed thereon ZE, such as a bridge B according to FIG. 22 precise. In addition to a finished parts database also occlusal can chendatenbänke be used for imports and be matched with the measurement data and merged. An adjustment to the antagonist is effected for example by means Moφhing. Thus, a custom, high-precision, and complex dental situation be processed by means of CAD / CAM methods. This can eventually the secondary / tertiary structures are produced and milled by software.

LO

Essential to the last aspect of the present invention is the use of a primary part of an adapter for a dental prosthesis, which affects several stumps, implant posts, etc., be able to provide a common path. Thus the use of comprehensive dental prostheses is possible, which could not be used without the present aspect of the ER L 5 compensation, since they could not be placed on the substructure in the mouth because of the previously required plurality of different insertion directions until now.

In particular, the above embodiments relate to the claims - 0 specified configurations and represent the specific apparatus and method features of embodiments of the claimed embodiments, so that the relation of the terminology is understandable in the exemplary embodiments and claims easily and furthermore clear is that the embodiments and their features and feature combinations exemplary of the information in the claims are not described and the latter 15 limit but merely illustrate.

The invention is only shown as an example with reference to embodiments in the specification and in the drawings and not limited thereto, but includes all variations, modifications, substitutions and combinations of those skilled in the present

; 0 refer to the documents, in particular in the scope of the claims and the general representations in the introduction of this description and the description of the embodiments and their representations in the drawing and with his faclmiännischen knowledge and the prior art especially involving the complete disclosures of the stated in this specification can combine earlier applications. I s-

15 special are all the individual features and possibilities of the invention and its embodiments can be combined.