The Journal of Advanced Prosthodontics

The Korean Academy of Prosthodonitics (대한치과보철학회)
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In vitro evaluation of color and translucency reproduction of maxillofacial prostheses using a computerized system

  • Nemli, Secil Karakoca (Department of Prosthodontics, Faculty of Dentistry, Gazi University) ;
  • Gungor, Merve Bankoglu (Department of Prosthodontics, Faculty of Dentistry, Gazi University) ;
  • Bagkur, Meral (Department of Prosthodontics, Faculty of Dentistry, Gazi University) ;
  • Bal, Bilge Turhan (Department of Prosthodontics, Faculty of Dentistry, Gazi University) ;
  • Arici, Yeliz Kasko (Biostatistics and Medical Informatics Department, Faculty of Medicine, Ordu University)
  • Received : 2018.06.08
  • Accepted : 2018.11.18
  • Published : 2018.12.31
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Abstract

PURPOSE. Accurate color matching of maxillofacial prostheses to skin is important for esthetics. A computerized color matching system specific to human skin has recently been developed. The purpose of this study was to evaluate the accuracy in color and translucency matching of the computerized color matching system across different skin colors. MATERIALS AND METHODS. The silicone was colored to simulate 28 different skin colors (n=5) to serve as "target skin colors". Using a spectrocolorometer (e-skin), color codes were determined for "replicate skin color" fabrication. CIELAB Delta-E between target skin color-replicate skin color pairs and translucency parameter were calculated. CIELAB Delta-E values were compared with one-way ANOVA and Tukey multiple-comparison. The agreement between $L^*$, $a^*$, $b^*$ and translucency parameter of target skin colors and replicate skin color were calculated by a two-way mixed average measures intraclass correlation coefficient. Translucency parameter of target skin color- replicate skin color pairs were compared with Paired t-test (${\alpha}=.05$). RESULTS. The mean CIELAB Delta-E value was 3.83 and significant differences were found among colors. The intraclass correlation coefficient showed excellent reliability for $L^*$, $a^*$, $b^*$ and good reliability for translucency parameter (P<.001). The mean translucency parameter of replicate skin colors was significantly higher than that of translucency parameter. CONCLUSION. The computerized color matching system specific to human skin was found to be reliable in terms of color and translucency between target skin colors and replicate skin color.

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