INFLUENCE OF ABUTMENT MATERIAL, CEMENT THICKNESS, AND CROWN TYPE ON THE FINAL COLOR OF IMPLANT-SUPPORTED RESTORATIONS.

Purpose: To evaluate the influence of abutment material, cement thickness, and crown type on the esthe:cs of implant supported restora:ons. Material and Methods: In total, 60 specimens were prepared to represent six abutment groups: Group PA = pink-anodized Ti; Group GA = gold-anodized Ti; Group T = nonanodized Ti; Group H = hybrid (Ti + zirconia); Group P = PEEK (Ti + PEEK); and Group C = composite resin (control). Crown specimens (n = 120) were obtained from Vita Enamic (VE) and Vita Suprinity (VS). Two cement thicknesses (0.1 and 0.2 mm) were used. The color values of crown configura:ons were measured and E00* values were calculated. Sta:s:cal analyses included were Shapiro Wilk, three-way ANOVA, and Tukey HSD tests (P £ .05). Results: Abutment (P < .001) and crown materials (P = .001) had a significant effect on E00* values, while cement thickness did not. Groups PA and H resulted in significantly lower mean E00* values than other abutments, whereas Group T revealed the highest. Unlike VS, cement thicknesses created a significant difference on the E00* values for VE (P £ .05). Conclusions: Pink-anodized Ti or hybrid abutments for VE and pink- or goldanodized Ti for VS seem to be better options, in terms of color change. Cement thickness of 0.1 mm resulted in higher E00* value than 0.2 mm for VE (P £ .05). Int J Prosthodont. [ABSTRACT FROM AUTHOR]