Method and device for selecting shade of a colour coding ring

摘要

A method and a device for determining the sample of a colour coding ring closest to the colour of at least one element of a patient's set of teeth ( 3 ). The method includes steps which consist in: with imaging elements having a video camera ( 1 ), inputting and freezing on the screen ( 7 ) a colour image ( 7 a) of the set-of-teeth element ( 3 ), filming the colour coding ring and displaying on the screen ( 7 ) the image of at least one sample, such that the image is side by side with the frozen image ( 7 a) of the set-of-teeth element, visually comparing the image ( 7 a) of the set-of-teeth element ( 3 ) frozen on the screen ( 7 ) and the sample image.