Influence of Thickness of Endocrown and Ceramic Translucency on The Degree of Conversion of Resin Cement (In Vitro Study)

Document Type : Original Article

Authors

1 Post Graduate Student at Fixed Prosthodontics Department, Ain Shams University

2 Professor of Fixed Prosthodontics, Faculty of Dentistry, Ain Shams University

3 Lecturer of Fixed Prosthodontics, Faculty of Dentistry, Ain Shams University

4 Lecturer of Fixed Prosthodontics Department, Faculty of Dentistry , The British University in Egypt

Abstract

Abstract
Objective: Various factors influence the degree of conversion of dual-cure resin cement, including the restoration thickness, and the translucency of the ceramic material. This study aims to explore the impact of endocrown thickness and ceramic material translucency on the degree of conversion of dual-cure resin cement.
Material and Methods: Forty ceramic samples of vita Enamic were used. They were categorized into four groups based on the translucency T (n=10) and HT (n=10) and thickness 3mm (n=10) and 5mm (n=10). Two specially designed Teflon molds were fabricated for each thickness. The ceramic samples were placed inside the mold followed by dual cure Self-Adhesive Resin. The dual cured resin cement had a 0.1mm thickness. The cement film was detached from the ceramic samples. Then the Fourier Transform Infrared Spectroscopy was used to measure the degree of conversion.
Results: Two-way ANOVA showed significant differences between the different thicknesses of ceramic and different translucencies on the degree of conversion of the dual resin cement (p < 0.05).
Conclusion: Ceramic thicknesses have a significant influence on the degree of conversion of the underlying dual cure resin cement. Higher translucencies of ceramic material show higher cement conversion than lower translucencies.

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Egyptian Dental Journal
Volume 70, Issue 2 - Serial Number 4
Fixed Prosthodontics, Removable Prosthodontics and Dental Materials
April 2024
Pages 1827-1835

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