Effect of margin design on stress distribution of mandibular first molar in all ceramic restorations: A finite element method

The purpose of this study was to evaluate effect of the stress distribution of the crown margin desing localization of critical sites in mandibular first molar under functional loading by using finite element analysis engineering tools. Two dimensional teeth modeled by transferring the anatomical structure from the Wheeler. Two dimensional finite element model of a mandibular first was presented. The bite force of 50 N, 100 N and 200 N was applied vertically to the tooth longitudinal axis. Three models were considered to be restored with IPS E-max with a different margin design. Stress distribution was investigated using finite element analysis.