Marginal and Internal Adaptation of Zirconia Endocrowns - A Literature Review

Abstract

BACKGROUND One of the important factors in the success of teeth with endocrown restorations is to achieve minimum values of internal and marginal gap. The purpose of this review article is to explore the information published in the marginal and internal adaptations of zirconia endocrowns. METHODS This review article was conducted using keywords of CAD/CAM, Endocrown and Marginal and internal adaptation in the Medline database. The search range included all relevant articles by the end of 2018. RESULTS The results of this study showed that 12 studies by the end of 2018 examined marginal and internal adaptation of endocrowns. Most studies were conducted in laboratory conditions. A majority of studies, which compared CAD/CAM systems, showed that the compared groups in terms of marginal and internal adaptation of endocrowns were in the clinically acceptable range in most cases. CONCLUSIONS A review of included studies showed that the endocrowns have the same or better marginal and internal adaptation compared to conventional crowns. However, there is a need for further studies with larger sample size and clinical trials in this area.