A retrospective study on the clinical outcomes of all⁃ceramic crowns restoration fabricated by oral digital im⁃ pression

Abstract

Objective To evaluate the clinical outcomes of all⁃ceramic crowns whose oral digital impressions were scanned by 3Shape Trios. Methods All the impressions were scanned by Trios and all the crowns were fabricated ac⁃ cording to the standard procedure. The restoration quality were evaluated using modified United States Public Health Service (USPHS) criteria one year after treatment. Restoration integrity、marginal adaptation、enamel wear、color satis⁃ faction and gingival index (GI) of the prostheses were evaluated according to the modified USPHS criteria. Results The clinical 1 year survival rate of 92 porcelain crowns fabricated by 3⁃ shape Trios digital impression and made by CAD/CAM was 100%. The scored A rates of restoration integrity、marginal adaptation、enamel wear、secondary caries、 color satisfaction and gingival index of the prostheses were 100%、91.3%、98%、95.6%、96.7% and 94.7% after 1 year, respectively. Conclusion The clinical outcomes of all⁃ceramic crowns whose oral digital impressions were scanned by 3Shape Trios and whose crowns were made by CAD⁃CAM are satisfying.

Keywords

• Oral digital impression
• CAD/CAM
• 3Shape Trios
• Retrospective
• Zirconia crown