Intraoral illumination device

(57) Summary book invention relates to the irradiation equipment in a mouth (20), and the method of irradiating with inner 腔 of a patient's mouth in a medical process. Irradiation equipment (20) includes the byte block (26) which carries out engaging of clutch to a patient's tooth, and is fixed to a mouth. In a medical process, a byte block (26) rests a patient's jaw. As arc-shaped optical distribution piece (24) turns to the inner 腔中央 partial back of a patient's mouth while in use, it is connected with the byte block (26). Thereby, a diverging ray is transmitted outside from a back inner 腔中央 portion. A tongue and cheek リトラクタ (22) push away and take care of a patient's tongue and the cheek organization of the neighborhood in a medical process. Two or more fluid suction channels (58) which equipment (20) holds are connected with the inside of a patient's mouth, and remove fluid from an inner 腔 part in a medical process.