Articles
  • Comparison of the effect of different metal alloys on the esthetic appearance of dentin porcelain

  • Gonca Deste Gökaya*, Rukiye Durkanb, Perihan Oyarc and Gülsüm Gökçimend

  • aBursa Uludağ University, Faculty of Dentistry, Department of Prosthodontics, Bursa, Turkey
    bIstanbul Okan University, Faculty of Dentistry, Department of Prosthodontics, Istanbul, Turkey
    cHacettepe University, School of Health Services, Dental Prosthetics Technology, Ankara, Turkey
    dAfyonkarahisar Health Sciences University, Faculty of Dentistry, Department of Prosthodontics, Afyonkarahisar, Turkey

  • This article is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The purpose of this study was to examine the effect of aurofilm masking agents applied to various metal alloys on the color of porcelain in metal-ceramic restorations (MCRs). The study was conducted with 2 different base-metal alloys (Ni-Cr, Co-Cr) and 2 different noble alloys (Pd-based, Au-Pd) used for MCRs, as well as 1 high noble alloy (Au-based) that served as a control group. Eight experimental groups (n=7) and 1 control group were used in this study. An aurofilm masking agent was applied to 4 groups (AuPdM, PdM, CoCr, NiCrM). Opaque porcelain and dentin body porcelain were applied to all groups. CIEL*a*b* color coordinates were measured. The Pd group had the highest mean a* value (-5.82); however, in comparison to the control group, the differences in a* values were statistically significant only for the Cr-Co alloy groups (CoCr and CoCrM). The Pd group had the highest mean b* value (7.89). The ΔE value (2.13) of the CoCr group was significantly higher than all other alloy groups. Metal alloy substrate and aurofilm masking agents significantly affected the color of porcelain MCRs. However, color differences between base-metal and noble alloys and the control group were within clinically acceptable limits (ΔE<3.5).


Keywords: Metal-ceramic restorations, Ceramic alloys, Color matching, Ceramic

This Article

  • 2022; 23(1): 16-21

    Published on Feb 28, 2022

  • 10.36410/jcpr.2022.23.1.16
  • Received on Aug 13, 2021
  • Revised on Aug 25, 2021
  • Accepted on Sep 11, 2021

Correspondence to

  • Gonca Deste Gökay

  • Bursa Uludağ University, Faculty of Dentistry, Department of Prosthodontics, Bursa, Turkey
    Tel : +90 (553) 431 30 40 Fax: +90 (224) 294 00 41

  • E-mail: goncadeste@uludag.edu.tr