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 esthetics of implant supported restorations.

MATERIAL AND METHODS: Sixty specimens were prepared to represent 6 abutment groups; Group PA = Pink-anodized Ti, Group GA = Gold-anodized Ti, Group T = Non-anodized Ti, Group H = Hybrid (Ti + zirconia), Group P = PEEK (Ti + PEEK), and Group C = Composite resin, (control). Crown specimens (n = 120) were 2 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 configurations were measured and ΔE00* values were calculated. Statistical analyses were included Shapiro Wilk, 3-way ANOVA and Tukey HSD tests ( P ≤ 0.05).

RESULTS: Abutment ( P < 0.001) and crown materials ( P = 0.001) had a significant effect on ΔE00* values, while cement thickness did not. Groups PA and H resulted in significantly lower mean ΔE00* values than other abutments, whereas Group T revealed the highest. Unlike VS, cement thicknesses created a significant difference on the ΔE00* values for VE ( P ≤ 0.05).

CONCLUSIONS: Pink-anodized Ti or hybrid abutments for VE and pink- or gold-anodized Ti for VS seem to be better options, in terms of color change. Cement thickness of 0.1 mm resulted in higher ΔE00* value than 0.2 mm for VE ( P ≤£ 0.05). Int J Prosthodont. 10.11607/ijp.8564.