ĐỐI CHIẾU ĐỘ TRONG MỜ GIỮA HỆ THỐNG SO MÀU CỔ ĐIỂN VÀ 3D TRONG NHA KHOA

Abstract

Objective: In the present study, we used a colorimeter to evaluate the translucency according to CIELAB color system of classic and 3D tooth shade matching systems to provide a comparison table of translucency as a reference tool for dentists and dental technicians in the process of evaluating and accurately comparing tooth color in dental restoration. Method: An in-vitro study was conducted with 2 popular color matching sets Vita Classical (16 shades) and Vita System 3D-Master (26 shades). CIELAB parameters (L, a, b) for the color matching teeth were measured at room temperature with a colorimeter in the middle incisor of the tooth 10 times on white and black backgrounds and then recorded values ​​to calculate and compare the translucency in each system and between the 2 systems. Results: The lightest color groups of both tooth shade systems (A1, 1M1, 3M2, 4M1) had the highest translucency parameter (TP >3). The first colors of each tone group had significant higher translucency than the remaining colors in the same color tone. There was a correspondence in translucency between the two colorimetric systems with a ΔTP difference of 0 - 0.6. Conclusion: This study provides quantitative translucency values ​​of the 2 most popular colorimetric systems in dentistry, as a reference for dentists and dental technicians to record and compare tooth color in the clinic and laboratory most accurately and conveniently