PROBLEM TO BE SOLVED: To provide a tooth colorimetric method allowing rapid measurement of a color of a tooth and allowing early acquisition of a result.SOLUTION: A device (1) includes imaging means (11), storage means (13), and arithmetic means (10). By use of the device (1), a plurality of color samples having different colors are photographed by the imaging means, signals from the imaging means (11) are calculated by the arithmetic means to quantify the colors, and they are stored in the storage means as respective reference values of the plurality of color samples, a color is quantified and digitalized from an immediate video of a tooth that is a measurement target by the arithmetic means to set it to a measurement value, the reference values and the measurement value are compared, and the sample of the reference value closest to the measurement value is extracted.COPYRIGHT: (C)2015,JPO&INPIT【課題】迅速に歯牙の色を測定することができ、結果を早く得ることが可能な歯牙測色方法を提供する。【解決手段】撮像手段(11)、記憶手段(13)、及び演算手段(10)を備える装置(1)を用い、色が異なる複数の色見本を撮像手段で撮影し、撮像手段(11)からの信号を演算手段により色を定量化してこれを複数の色見本のそれぞれの基準値として記憶手段に記憶させ、測定対象である歯牙の即時の映像から演算手段により色を定量的に数値化しこれを測定値とし、基準値と測定値とを比較して最も近い基準値の見本を抽出する。【選択図】図3
