Photocolorimetry for full crown central incisor shade matching

Abstract

Introduction. The objective of this case series report is color matching of the central incisors all-ceramic crowns and determine the color difference between those crowns and contralateral or neighboring intact natural incisor using the DEab value from CIELab formula. Case report. The subject of this color assessment was all-ceramic crowns for central incisors for three young female patients. The intact natural incisors were used as the target shade for the all-ceramic crown. After tooth preparation and IO scan everything has been done at once, regarding the design of restoration and model. For these cases Ivoclar ZirCAD PRIME multi A1 block has been used. For proper shade mapping polarized picture with grey card for digital calibration is necessary as well as one standard picture for mapping the color effects. For tooth color mapping has been used the eLapp. Highest DEab value for all three cases was 2.7 or less, which indicates that the color is clinically acceptable, considering acceptability threshold value of less than 2.7 (three-year follow-up confirmed acceptable color appearance. Conclusion. Following recommended protocol based on the eLsoftware, clinically acceptable color of the all-ceramic crown were obtained.