@article{oai:mdu.repo.nii.ac.jp:00000324, author = {橋口, 綽徳 and 長野, 朱実 and 伊比, 篤 and 汲田, 健}, issue = {1}, journal = {松本歯学}, month = {Jun}, note = {application/pdf, To know the accurate color of the natural and artificial teeth, the Micro-Color-Computer was devised. The reflecting, retracting, and transmitting of incident rays caused by the surface gloss and the microstructure of the natural and artificial teeth have prevented accurate measurement of color shade. It was concluded that the structure of the radiation detector might be improved in order to settle the problem. Thus, a new radiation detector was devised and this experiment was carried out. The structure of the radiation detector: A 2mm wide detector surrounds around the light source, which is 3mm in diameter, and the whole body is designed mobile. The source of radiation can also be moved close to the teeth so that it can perceive the diffused reflection of the surface the transmitted incident rays. Therefore, this radiation detector in basic experiment of Opal-glass standard plate was used and then the shade-guide of VITA-LUMIN was surveyed, to find out the best position that suits the measuring conditions of the radiation detector. Result: No difference in color tendency was seen against the transposition of the radiation detector. But as the radiation detector gets far from the material, an entire decrease in co-ordinates of color was admitted. Based upon this fact, it may be concluded that the adequate distance between the radiation source and the radiation detector is within 1~3mm from the material}, pages = {77--86}, title = {口腔内の色彩に関する研究 第6報 Micro-Color-Computer受光器改良と陶歯の色(1)VITA-LUMIN}, volume = {8}, year = {1982} }