Ultra translucent zircônia: literature review

Abstract

INTRODUCION: Ultra translucent zircônia (5Y-PSZ) has superior optical properties compared to conventional ceramic systems, providing a wide application in aesthetic dentistry. OBJECTIVE: The present study aimed to present relevant information about 5Y-PSZ ceramics. MATERIAL AND METHOD: A literature search was performed with articles that specifically evaluated ultra translucent zircônia in the PubMed database, the selected articles covered the period between 2010 and 2020, in addition to using older articles a in order to contextualize it. The selected papers describe the optical, mechanical and clinical applications of 5Y-PSZ. RESULTS: The literature shows that the chemical composition of this material provides greater translucency than other zircônia and its flexural strength allows its use in posterior and anterior unitary restorations. CONCLUSION: Adhesion does not seem to be an obstacle for indicating this zircônia in non-retentive areas, and this makes it a promising material for applicability in ceramic laminates, adopting a more conservative approach. However, as 5Y-PSZ was recently developed, further studies are needed to assess its properties and different clinical situations for the dentist to choose this material with confidence in clinical practice.