Abstract
A lot of all-ceramic crown systems have been developed in the last decade. Current all-ceramic crown systems show great mechanical strength compared with previous porcelain crowns. With regard to color reproduction of esthetic and natural tooth color, all-ceramic crown systems have an advantage due to the lack of a metal frame. This paper describes colorimetric indications related to the following points for color reproduction of all-ceramic crowns.
·oe Color space of natural tooth color
·oe Tooth color as the turbid-media
·oe Color reproduction with stratiformed ceramic layer
·oe Colorimetric properties of ceramic crown
·oe Color adjustability of luting resin cements
·oe Application of CCM for color reproduction
