Figure 9

Results of the automatic operation of the algorithm and the manual method of determining the enamel thickness. The expert dentist marked two contours - the outer tooth contour L _en ^(E)(n) (in magenta) and the enamel boundary L _in ^(E)(n) (in yellow). On this basis and on the basis of the results of automatic analysis (L _en (n) green, L _in (n) blue) with the proposed algorithm, the measurement error was calculated per 20 teeth. This error did not exceed 15%.