Effect of Hydrothermal Degradation on Translucency of Zirconia Laminate Veneers

Document Type : Original Article

Authors

1 Dentist at health insurance, Cairo, Egypt.

2 Professor and head of Crowns and Bridges department, Faculty of Dental Medicine For Girls, Al-Azhar University, Cairo, Egypt.

3 Lecturer of Crowns and Bridges department, Faculty of Dental Medicine for Girls, Al-Azhar University, Cairo, Egypt

Abstract

Purpose: The present study aimed to assess the effect of hydrothermal degradation on the translucency of zirconia laminate veneers. Materials and methods: Thirty discs of zirconia laminate veneers (thickness: 0.5mm) were obtained from high translucent zirconia, super translucent zirconia, and ultra-translucent zirconia. The samples were divided into 3 groups (n=10) according to the translucency of the material; Group (1) High Translucent Multi Layered katana zirconia (HTML), Group (2) Super Translucent Multi Layered katana zirconia (STML) and Group (3) Ultra Translucent Multi Layered katana zirconia (UTML). The shade of each group was A1. All the groups were subjected to hydrothermal degradation (134 ±2⁰C at 0.2 MPa) for 5 hours. The translucency of the samples was measured using a reflective spectrophotometer. Results: Statistical analysis using the ANOVA test showed no significant effect on the translucency of all the tested groups after hydrothermal degradation. Conclusion Hydrothermal degradation doesn’t affect translucency of zirconia (HTML, STML, and UTML).

Keywords

Al-Azhar Journal of Dentistry
Volume 11, Issue 1
January 2024
Pages 76-80

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