Preparation Types for Ceramic Veneers

Abstract

This literature review identifies the different types of dental preparation designs for ceramic veneers and compares their corresponding prognosis. Obectives: The purpose of this work is to describe the different types of preparation for ceramic veneers. In parallel, this study will aim to: 1. Compare preparation types at the cervical limit according to their long-term prognosis 2. Compare preparation types at the incisal limit according to their long-term prognosis 3. Compare the advantages and disadvantages or conventional preparations with the “no prep” veneers Methodology: An electronic search strategy was conducted involving MEDLINE, BIBLIOTECA CRAI and GOOGLE SCHOLAR. Keywords used were veneers, preparation types, survival rates, incisal overlap, finish lines. Results: The articles were selected according to multiple inclusion and exclusion criteria. A total of 76 articles were included in this review. Both in vivo and in vitro studies were included in the review, as well as case reports, bibliographical reviews and extracts from books. Aspects of the preparation designs were quantified and analyzed from a analyze of these articles. Conclusion: We can distinguish three types of dental preparations for anterior veneers: type I, type II and type III. 1) The light chamfer cervical preparation is the most conservative and suitable option and 2) Type I and type II incisal preparations should be favored (Type II presenting the lowest risk of post-operative failure). Type III incisal preparation is Contraindicated.