Effect of abutment types and resin cements on the esthetics of implant-supported restorations


Çeken A., Kılınç H., TURGUT S.

Journal of Advanced Prosthodontics, vol.15, no.3, pp.114-125, 2023 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 15 Issue: 3
  • Publication Date: 2023
  • Doi Number: 10.4047/jap.2023.15.3.114
  • Journal Name: Journal of Advanced Prosthodontics
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.114-125
  • Keywords: Anodic oxidation, Color, Hybrid abutment, Monolithic zirconia, Resin cement
  • Karadeniz Technical University Affiliated: Yes

Abstract

PURPOSE. The aim of the study was to evaluate the optical properties of new generation (3Y-TZP) monolithic zirconia (MZ) with different abutment types and resin cement shades. MATERIALS AND METHODS. A1/LT MZ specimens were prepared (10 × 12 × 1 mm, N = 30) and divided into 3 groups according to cement shades as transparent (Tr), yellow (Y) and opaque (O). Abutment specimens were obtained from 4 different materials including zirconia (Group Z), hybrid (Group H), titanium (Group T) and anodized yellow titanium (Group AT). MZ and abutment specimens were then cemented. L*, a*, and b* parameters were obtained from MZ, MZ + abutment, and MZ + abutment + cement. ΔE001* (between MZ and MZ + abutment), ΔE002* (between MZ and MZ + abutment + cement) and ΔE003* (between MZ + abutment and MZ + abutment + cement) values were calculated. Statistical analyses included 2-way ANOVA, Bonferroni, and Paired Sample t -Tests (P <.05). RESULTS. Abutment types and resin cements had significant effect on L*, a*, b*, ΔE001*, ΔE002*, and ΔE003* values (P <.001). Without cementation, whereas zirconia abutment resulted in the least discoloration (ΔE001* = 0.68), titanium abutment caused the most discoloration (ΔE001* = 4.99). The least ΔE002* = 0.68 value was seen using zirconia abutment after cementation with yellow shaded cement. Opaque shaded cement caused the most color change (ΔE003* = 5.24). Cement application increased the L* values in all groups. CONCLUSION. The least color change with/without cement was observed in crown configurations created with zirconia abutments. Zirconia and hybrid abutments produced significantly lower ΔE002* and ΔE003 values in combination with yellow shaded cement. The usage of opaque shaded cement in titanium/anodized titanium groups may enable the clinically unacceptable ΔE00* value to reach the acceptable level.