The success of dental treatment is evaluated according to functional and esthetic results. esthetics prostheses considered one the most important parameters that patient interested in. Color matching an essential procedure obtain prosthesis. influenced by several factors, if not performed properly, it can have unsatisfactory results for both clinician patient. This review discusses color scienc...

In this study, the observer variability in a 10° achromatic color matching experiment using systematically different primaries under immersive, perceptually neutral (4673 K) and stable adapted viewing conditions have been investigated for four sets of CIE functions (CMFs). The reference was illuminated by spectrally broadband light source at 70 cd/m2 4613 K. Fifty-four observers varying age, ge...

Let P be a set of n points in general position in the plane which is partitioned into color classes. P is said to be color-balanced if the number of points of each color is at most bn/2c. Given a color-balanced point set P , a balanced cut is a line which partitions P into two colorbalanced point sets, each of size at most 2n/3+1. A colored matching of P is a perfect matching in which every edg...