Effect of staining solutions on color and translucency change of different monolithic CAD-CAM ceramic materials

Document Type : Original Article

Authors

1 Lecturer of Fixed Prosthodontics, Faculty of Dentistry, Beni-Suef University, Beni-Suef, Egypt

2 Associate Professor of Fixed Prosthodontics, Faculty of Dentistry, Beni-Suef University, Beni-suef, Egypt

Abstract

Purpose: assess effect of staining solutions on color and translucency change of different monolithic CAD-CAM ceramic materials.
Materials and methods: 66 rectangular-shaped specimens milled from different CAD-CAM ceramic materials and divided into 3 groups (n = 22): ZLS group, zirconia-reinforced lithium silicate; ZR group, 4 mol% yttria-stabilized tetragonal zirconia polycrystal (4Y-TZP); and LD group, lithium disilicate glass-ceramic. Each group subdivided into 2 subgroups (n = 11) according to staining solution used (coffee and distilled water). The specimens’ color and translucency parameter (TP) were evaluated at baseline and after staining procedures. Changes in color (ΔE) and translucency parameter (ΔTP) were calculated. One-way ANOVA followed by Tukey’s post hoc test used if ANOVA showed a significant p‑value (p < 0.05).
Results: Staining solutions had a significant impact on color change (ΔE) and translucency parameter change (ΔTP) of all tested specimens. Coffee had the most significant effect on ΔE where LD group recorded the largest ΔE (13.07 ±1.49) and ZLS group showed the smallest ΔE (5.21 ±1.37). Also, coffee had the most significant effect on ΔTP where ZR group recorded the largest ΔTP (3.3 ±0.07) and LD group recorded the smallest ΔTP (-0.5 ±0.2).
Conclusions: Color and translucency parameters of tested CAD-CAM ceramic materials were significantly influenced by staining solutions. ZLS group showed significantly least color change than ZR and LD groups. ZLS group showed significantly highest translucency parameter initially (baseline) and after staining procedures than ZR and LD groups while LD group revealed significantly least translucency change than ZR and ZLS groups.

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Egyptian Dental Journal
Volume 68, Issue 4 - Serial Number 4
October (Fixed Prosthodontics, Removable Prosthodontics and Dental Materials)
October 2022
Pages 3519-3530

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