Evaluation of digital photography technology and visual color matching in all-ceramic crown restoration of incisor

Abstract:

Objective：To study the differences of the color matching accuracy between the visual color matching and digital photogra－phy color matching. Methods：Thirty patients whose maxillary middle incisors needed to be restored were enrolled and randomized into A and B groups excluding the interfering factors of appearance，color and position. After color matching，patients in group A used VI－TA 3D-MASTER to choose color while those in group B took photograph by digital camera under the same time and environment，then fabricated all-ceramic crown. Results：There were statistical differences between the two methods in incisor color（P=0.034） and the digital photography color matching got higher satisfaction degree concerning the shape and harmony（P=0.041）. Conclusions：Only using digital photography technology could help the full crown making and it maybe interfered by some factors. Therefore，other methods should be combined in order to get an excellent color matching and necessary standards about the operating environment of digi－tal photography should be set.