Dental cement composition

[Detailed Description of the Invention]

If the present invention relates to a dental cement constituent and also it explains in full detail, when dental cement will be used for fusion or restoration within a patient's mouth, there is no Mostly pain and, as for Mostly, the discoloration after use and the dissolution to saliva are related with the dental cement constituent of the painlessness which is not again. About painless dental cement, these people developed the dental cement which contains a poorly soluble tannic acid derivative in water previously (refer to JP,57-64630,A). As for this dental cement, solubility is small and, moreover, the pain at the time of cement fusion is reduced extremely. While discoloring cement containing tannic acid, as for the above-mentioned dental cement which contains a poorly soluble tannic acid derivative in water, discoloration of cement is reduced sharply. However, it is I found out that cannot say that the above-mentioned dental cement which only included only the poorly soluble tannic acid derivative in water has no discoloration of cement, and some discoloration is not avoided in prolonged time progress. When dentist actually uses dental cement within a patient's mouth, it uses it, carrying out Observation intermediary Kneading of the time so that a hardening reaction may occur, Therefore, it is although it is desirable within the mouth to harden as promptly as possible and for sufficient time for operation to have a crush drag by initial hardening large moreover, It cannot say that the above-mentioned dental cement which included only the poorly soluble tannic acid derivative in water also from a point of such the hardening characteristic is not necessarily ideal, and is Oh. It is Oh which has desirable again further decreasing the solubility over a long period of time also from a point of the endurance of dental cement. When this artificer makes the dental cement constituent which contains a poorly soluble tannic acid derivative in water contain a water-soluble reducing agent as a result of inquiring aiming at the improvement in improvement paying attention to these many points, While passing for a long time, the arising cement discoloration can be prevented and solubility might also be decreased, and it studied that the hardening characteristic might also be raised, and also it studied that improvement improvement could be further carried out by making aluminum salt add and contain, and completed the present invention. That is, in the dental cement constituent which comprises the 2nd ingredient that one of the present invention reacts to the 1st ingredient that makes a metal oxide the main ingredients, and the 1st ingredient, and can form a hardening object, It is related with a dental cement constituent, wherein a poorly soluble tannic acid derivative and a water-soluble reducing agent contain in water. One of everything [ the ] but the present invention is related with a dental cement constituent, wherein aluminum salt contains further in the above-mentioned dental cement constituent. Hereinafter, the present invention is explained in detail. Generally it comprises the 2nd ingredient that a dental cement constituent reacts to the 1st ingredient that makes a metal oxide the main ingredients, and the 1st ingredient, and can form a hardening object, and the 1st ingredient is usually a form of a paste or powder, and the 2nd ingredient is put together and used with the form of liquid, a paste, or powder. And what is necessary is to mix both ingredients beforehand, when both ingredients are powder, and to be able to add only water on the occasion of Kneading. In the case of the combination of other forms, on the occasion of Kneading, both ingredients are usually mixed, but depending on the case, one copy of the 2nd ingredient can also be included in the 1st ingredient. Thus, it is although there are various forms of a dental cement constituent, Not only the combination of various kinds of 1st ingredient, such as not the thing limited especially in the present invention but (powder-liquid), a (powder-paste), and a (paste paste) (paste liquid), and the 2nd ingredient but the combination of the mixed powder end of the 1st ingredient and the 2nd ingredient and water is possible. In one dental cement constituent concerning the present invention, a poorly soluble tannic acid derivative and water-soluble reducing agent in water, And in other dental cement constituents concerning the present invention, it adds to the two above-mentioned substance, and aluminum salt (these 3 substance to contain may be hereafter named a content substance generically) contains, respectively. And as for especially a tannic acid derivative and a water-soluble reducing agent, although either one of the 1st above-mentioned ingredient and the 2nd ingredient and both of a dental cement constituent are made to contain the above-mentioned content substance, it is preferred to make the 1st ingredient contain. The metal oxides which are the main ingredients of the 1st ingredient are a zinc oxide and a simple metal oxide like a calcium oxide, for example, It is what calcinated two or more kinds of oxides, such as what made the zinc oxide the main ingredients, and was calcinated and ground with other oxides and fluorides, in the main ingredients, and Then is also good, and also Then is also good at a glass-like oxide. Glass-like oxides are glass, such as Fluoro alumino silicate glass used, for example for the glass-ionomer-cement powder for dentistries. A metal oxide is used by two or more sorts, independent or mixing. The 2nd ingredient that reacts to the 1st ingredient and can form a hardening object is not limited in particular by the present invention. That is, it reacts to the 1st ingredient, a hardening object can be formed, and chelating agents, such as acid things, such as phosphoric acid and polycarboxylic acid, and cozy Nord, should just be raised. Next, although the content of the above-mentioned content substance is explained, weight % of the content shown here is based on the weight of the ingredient directed as Criteria after all the content substance content, or all the constituents. Although the object of the present invention can be given to the content of a poorly soluble tannic acid derivative by water regardless of how of the form of the 1st ingredient and the 2nd ingredient on the basis of the weight of the whole dental cement constituent at the time of 0.005~10 % of the weight, especially 0.005~5 % of the weight is preferred on the same standard as the above. When a dental cement constituent comprises the combination of the 1st ingredient (it may be called cement powder) of a powder form, and the 2nd ingredient of a liquid form, The poorly soluble tannic acid derivative should just contain in cement powder in the water of the quantity which is in 0.01~5% of the weight of the range on the basis of the weight of Then cement powder within the above-mentioned content on the basis of the whole constituent, And the content state of a poorly soluble tannic acid derivative is the most preferred in the combination and water of such a form. The content of a water-soluble reducing agent is 0.005~5 % of the weight, preferably 0.005~3 % of the weight on the basis of the weight of all the constituents, It is preferred that the water-soluble reducing agent of the quantity which is in 0.01~5% of the weight of the range on the basis of the weight of the 1st ingredient of Then especially within the above-mentioned content contains in cement powder. The content of aluminum salt is 0.005~5 % of the weight, preferably 0.005~3 % of the weight on the basis of the weight of all the constituents. In the present invention, a poorly soluble tannic acid derivative points out to water the tannic acid derivative which dissolves faintly whether the Mostly dissolution is carried out in water, Independent [, such as a tannic acid protein joint object, a tannic acid form aldehyde binding object, acetyltannic acid, and tannic acid metal salt, ] thru/or two or more sorts of composites are mentioned especially. Although protein is generally polycondensation union of amino acid, in the present invention, either simple protein or complex protein can be used. For example, complex protein, such as simple protein, such as protamine, a grotesque pudding, albumin, glutelin, prolamin, and gelatin, quality of a protein constituent of cell nuclei, phosphate protein, may be used. Especially in protein, such as this, albumin and gelatin are preferred. Although it does not limit especially as metal salt of tannic acid, calcium salt, aluminum salt, zinc salt, magnesium salt, strontium salt, etc. are mentioned, for example. In metal salt, aluminum salt, zinc salt, and calcium salt are more preferred. As a water-soluble reducing agent used by the present invention, a water-soluble thing etc. are mentioned with the salt of low-grade oxygen acid, such as an organic compound of reducing agents, such as salts of tin which is in a low valence state, for example, aldehyde, sugars, formic acid, and oxalic acid, phosphorous acid, and hypophosphorous acid. The 1st tin of sulfuric acid, the 1st tin of chlorination, the 1st tin of fluoridation, etc. are especially preferred. Each water-soluble reducing agent is used by two or more sorts, independent or mixing. As aluminum salt used by the present invention, aluminum sulfate, an aluminium nitrate, an aluminium chloride, alum, fluoridation aluminum, aluminum citrate, etc. are shown, for example. Each aluminum salt is used by two or more sorts, independent or mixing. The dental cement constituent concerning the present invention has composition of the above-mentioned explanation, Even if it uses it for dental medical treatment, large moreover, hardening is time for operation when initial cure time is sufficient in Fast or Or as well as there being no pain, and a crush drag has effects, like neither cotton intermediary discoloration nor the dissolution has Mostly in an after-use long period of time. In order to prepare the dental cement constituent concerning the present invention, it can be based on the method of adding the above-mentioned content substance, for example to zinc phosphate cement, silicate cement, cozy Nord cement, glass ionomer cement, carboxylate cement, etc. Hereinafter, an example is given and the present invention is explained still in detail. Example 1 0.5 g of albumin tannate, the 1st tin 0.5g of chlorination, 0.5 g of Karimiyeuban, and 98.5 g of carboxylate cement powder (product [ made by Beyond Co. ] brand name carbo Rit 100 powder is used) were uniformly mixed by the mortar made from Magnetic, and cement powder was prepared. It combined to this cement powder 1.7g at a rate of 1.0 g of carboxylate cement sclerosing solution (product [ made by Beyond Co. ] brand name carbo Rit 100 powder is used) to make a dental cement constituent. that carry out mixed Kneading of this dental cement constituent, make it harden, and there is the solubility in the pure water after one-day progress and, and a crush drag -- the method of examining JIS T6602 -- therefore, it measured. The discoloration grade of a hardened material when one month passes from Time of bowing was observed. Example 2~4 In manufacture of cement powder, the 1st tin 0.5g of chlorination and 0.5 g of Karimiyeuban are set constant, Albumin tannate was changed with 0.1g, 1.0g, and 2.0g, and each dental cement constituent was obtained like Example 1 except having changed with carboxylate cement powder 98.9g, 98.0g, and 97.0g to it. The solubility one day after hardening, the crush drag, and the discoloration [ one month after ] grade were investigated like Example 1 about this class product. Example 5~6 In manufacture of cement powder, 0.5g of albumin tannate and 0.5 g of Karimiyeuban are set constant, Each dental cement constituent was obtained like Example 1 except having changed the 1st tin of chlorination with 0.1g and 1.0g, and having changed carboxylate cement powder with 98.9g and 98.0g corresponding to it. The solubility one day after hardening, the crush drag, and the change [ one month after ] grade were investigated like Example 1 about this class product. Example 7 In manufacture of cement powder, the dental cement constituent was obtained like Example 1 except having used 0.5 g of tannic acid aluminum, the 1st tin 0.5g of chlorination, and carboxylate cement powder 99.0g without Karimiyeuban. The solubility one day after hardening, the crush drag, and the discoloration [ one month after ] grade were investigated about this constituent. Comparative example 1, 2 The case (comparative example 1) where the 1st tin of chlorination and Karimiyeuban are not used for manufacture of cement powder in Example 2, and albumin tannate, Solubility, the crush drag, and the discoloration grade were investigated about the hardened material of the class product like [ case / (comparative example 2) / where the 1st tin of chlorination and Karimiyeuban are not used ] Example 2. The above result is collectively shown in the 1st table. As shown in the 1st table, it is found out that it is admitted that the discoloration grade one month after comparing any example with comparative example 1 which did not make only albumin tannate contain has been improved further, and solubility and a crush drag are also excellent compared with comparative examples 1 and 2.

[Table]

[Table]

* Example 1~6: Albumin tannate Example 7: Tannin aluminum example 8 0.5g of tannic acid aluminum and the 1st tin 0.5g of fluoridation were mixed with 99.0 g of glass-ionomer-cement powder for dentistries (product [ made by Beyond Co. ] brand name Fuji Ionomer type powder is used), and cement powder was prepared. Using the glass-ionomer-cement sclerosing solution for dentistries (product [ made by Beyond Co. ] brand name Fuji Ionomer type liquid is used) as sclerosing solution, it combined with the powder-liquid ratio of the above-mentioned cement powder 1.4g and 1.0 g of sclerosing solution, and considered it as the dental cement constituent. making this constituent Kneading and harden -- JIS T6602 -- therefore, the solubility and the crush drag initial cure time and one day after hardening were measured, and the discoloration grade of the cement hardening object of one month after was investigated again. Example 9 In manufacture of cement powder, 0.5 g of tannic acid calcium is used instead of 0.5 g of tannic acid aluminum, 0.4 g of aluminum sulfate was added, except the amount of the glass-ionomer-cement powder for dentistries used having been 98.6 g corresponding to these, a dental cement constituent is obtained like Example 8, Kneading hardening was carried out, and physical properties were investigated. Example 10 In manufacture of cement powder, 0.3g of tannic acid aluminum and 0.5 g of albumin tannate are simultaneously used instead of 0.5 g of tannic acid aluminum, 0.4 g of aluminum sulfate was added, except the amount of the glass-ionomer-cement powder for dentistries used having been 98.3 g corresponding to these, a dental cement constituent is obtained like Example 8, Kneading hardening was carried out, and physical properties were investigated. Comparative example 3 Kneading hardening of the constituent was carried out about the case where only the glass-ionomer-cement powder for dentistries is used as cement powder in Example 8, and physical properties were investigated like Example 8. Comparative example 4 Physical properties were similarly investigated about the constituent obtained like Example 8 except having used what added 0.2 g of tannic acid aluminum to glass-ionomer-cement powder 99.8g for dentistries as cement powder in Example 8. The result of Examples 8, 9, and 10 and comparative examples 3 and 4 is shown in the 2nd table above.

[Table]

As shown in the 2nd table, compared with comparative examples 3 and 4, the solubility of Examples 8, 9, and 10 is all low, the crush drag is improving slightly, and moreover, there is no difference not much with comparative examples 3 and 4, and initial cure time is sufficient time for operation required by hardening, and does not have the discoloration after use, either.