Çağatay Barutçugil1, Dilber Bilgili2, Kubilay Barutcigil3, Ayşe Dündar4, Ulviye Şebnem Büyükkaplan5, Burak Yilmaz6. 1. Associate Professor, Department of Restorative Dentistry, Faculty of Dentistry, Akdeniz University, Antalya, Turkey. 2. Research Assistant, Department of Restorative Dentistry, Faculty of Dentistry, Akdeniz University, Antalya, Turkey. Electronic address: dilberbilgili@akdeniz.edu.tr. 3. Research Assistant, Department of Prosthetic Dentistry, Faculty of Dentistry, Akdeniz University, Antalya, Turkey. 4. Assistant Professor, Department of Restorative Dentistry, Faculty of Dentistry, Akdeniz University, Antalya, Turkey. 5. Associate Professor, Department of Prosthetic Dentistry, Faculty of Dentistry, Akdeniz University, Antalya, Turkey. 6. Professor, Division of Restorative Sciences and Prosthodontics, College of Dentistry, The Ohio State University, Columbus, Ohio.
Abstract
STATEMENT OF PROBLEM: Color and translucency changes of recently introduced composite resin blocks after long-term exposure to various staining agents have not been fully investigated. PURPOSE: The purpose of this in vitro study was to evaluate the color stainability and translucency changes of computer-aided design and computer-aided manufacturing (CAD-CAM) materials immersed in beverages with staining potential. MATERIAL AND METHODS: Three types of CAD-CAM blocks were used: 3M Lava Ultimate (LU), GC Cerasmart (CS), and VITA Enamic (VE). Forty-five rectangular specimens (1.5-mm thickness) of each product were prepared. The specimens were divided into 3 subgroups (n=15 in each) according to the immersion beverage. The specimens were then immersed in distilled water, red wine, and coffee for 30 days. Color parameters (ΔE00), the translucency parameter, and the contrast ratio were determined after 24 hours and 1 month. The Kruskal-Wallis and Mann-Whitney U tests and the Wilcoxon, Freidman, and repeated measurement ANOVA tests were used for statistical analysis (α=.05). RESULTS: None of the materials showed clinically perceptible color changes except CS specimens immersed in coffee for 24 hours. The materials immersed in red wine and coffee for 1 month showed greater discoloration than those immersed in water (P<.05). The LU immersed in red wine showed the highest translucency changes, and VE was more resistant to translucency changes, as compared with the other materials tested. The contrast ratio values of the LU material were higher than those of the CS and VE materials in all the beverages. CONCLUSIONS: The red wine and coffee caused significant changes in the color and translucency of these novel CAD-CAM materials after a long immersion period.
STATEMENT OF PROBLEM: Color and translucency changes of recently introduced composite resin blocks after long-term exposure to various staining agents have not been fully investigated. PURPOSE: The purpose of this in vitro study was to evaluate the color stainability and translucency changes of computer-aided design and computer-aided manufacturing (CAD-CAM) materials immersed in beverages with staining potential. MATERIAL AND METHODS: Three types of CAD-CAM blocks were used: 3M Lava Ultimate (LU), GC Cerasmart (CS), and VITA Enamic (VE). Forty-five rectangular specimens (1.5-mm thickness) of each product were prepared. The specimens were divided into 3 subgroups (n=15 in each) according to the immersion beverage. The specimens were then immersed in distilled water, red wine, and coffee for 30 days. Color parameters (ΔE00), the translucency parameter, and the contrast ratio were determined after 24 hours and 1 month. The Kruskal-Wallis and Mann-Whitney U tests and the Wilcoxon, Freidman, and repeated measurement ANOVA tests were used for statistical analysis (α=.05). RESULTS: None of the materials showed clinically perceptible color changes except CS specimens immersed in coffee for 24 hours. The materials immersed in red wine and coffee for 1 month showed greater discoloration than those immersed in water (P<.05). The LU immersed in red wine showed the highest translucency changes, and VE was more resistant to translucency changes, as compared with the other materials tested. The contrast ratio values of the LU material were higher than those of the CS and VE materials in all the beverages. CONCLUSIONS: The red wine and coffee caused significant changes in the color and translucency of these novel CAD-CAM materials after a long immersion period.
Authors: Ana Lúcia Nascimento Oliveira; Carlos Nelson Elias; Heraldo Elias Salomão Dos Santos; Claudinei Dos Santos; Ronaldo Sergio de Biasi Journal: Int J Biomater Date: 2022-05-21