The effect of margin design on stress distribution in zirconia-based full crown restorations: A 3D finite element analysis

Purpose: The aim of this study is to evaluate the effect changes in margin design on stress distribution restoration zirconia-based full-crown restorations using 3D finite element analysis. Material and Methods: To be used restorations, tooth number 16 was prepared chamfer step type a maxillary tooth-jaw model (AG-3: Tipodont, frasaco, Germany). scanned desktop scanner, analysis obtained. Zirconia frameworks are divided into 3 groups according design: uniform thickness hood (Model A), ¾ partial crown form B), lingual banded C). completed by felspathic porcelain as superstructure material. In order examine distributions restoration, maximum principal (MPa) values under 600 N vertical load were investigated. Result: zirconia framework observed Model A (82.90 MPa), B (49.34 MPa). feldspathic has highest value (21,860 minimum occurred 13.33 MPa. framework, lowest 11.54 MPa B. Conclusions: Within results study, it clear that affects force generated transmitted tooth. will benefit dentists determining infrastructure restorations. Lingual band designs have been found successful.