The Journal of Advanced Prosthodontics

The Korean Academy of Prosthodonitics (대한치과보철학회)
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Effect of abutment types and resin cements on the esthetics of implant-supported restorations

  • Asena Ceken (Cerkezkoy Oral and Dental Health Care Center, Tekirdag Provincial Health Directorate) ;
  • Hamiyet Kilinc (Department of Prosthodontics, Faculty of Dentistry, On Dokuz Mayis University) ;
  • Sedanur Turgut (Department of Prosthodontics, Faculty of Dentistry, Karadeniz Technical University)
  • Received : 2023.02.08
  • Accepted : 2023.06.20
  • Published : 2023.06.30
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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. ∆E001* (between MZ and MZ + abutment), ∆E002* (between MZ and MZ + abutment + cement) and ∆E003* (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*, ∆E001*, ∆E002*, and ∆E003* values (P < .001). Without cementation, whereas zirconia abutment resulted in the least discoloration (∆E001* = 0.68), titanium abutment caused the most discoloration (∆E001* = 4.99). The least ∆E002* = 0.68 value was seen using zirconia abutment after cementation with yellow shaded cement. Opaque shaded cement caused the most color change (∆E003* = 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 ∆E002* and ∆E003* values in combination with yellow shaded cement. The usage of opaque shaded cement in titanium/anodized titanium groups may enable the clinically unacceptable ∆E00* value to reach the acceptable level.

Keywords

Acknowledgement

The authors thank to Prof. Dr. Tamer Tuzuner for his support for doing the statistical analyses of the study.

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