Abstract: Objective: To study the factors related to the clinical effects of IPS-Empress porcelain veneer. Methods: Three hundred and two cases of patients treated by IPS-Empress porcelain veneer were studied retrospectively. The type of dental preparation, colorimetric methods, bonding process, and other factors were analyzed to study the impact of the clinical effect of IPS-Empress porcelain veneer. Results: Type I was significantly superior to type II and type III in terms of the color and marginal adaptation of prosthetic margin and patients’ satisfaction degree (P<0.05). Instrument colorimetry and digital photography in the form and color of restorations and patients’ satisfaction degree were significantly higher than the visual method (P<0.05). Photocurable resin adhesives was significantly higher than dual-cure and chemical-cure adhesives on the the form and color of restorations and patients’ satisfaction degree (P<0.05). Adhesive thickness less than 0.1mm was better than thickness less than 0.2mm in the color and marginal adaptation of prosthetic margin and the form and color of restorations (P<0.05). In terms of surface treatment of IPS-Empress porcelain veneer, the five treatment methods showed no significant difference in clinical curative effect (P>0.05). Conclusion: The type of dental preparation, colorimetric methods, resin adhesive, and adhesive thickness were the factors that affected the clinical effect in the operation of IPS-Empress porcelain veneer.

Key words: IPS-Empress porcelain veneer , Clinical effect , Multivariate analysis