Maravić Tatjana, Vasiljević Darko, Kantardžić Ivana, Lainović Tijana, Lužanin Ognjan, Blažić Larisa
Faculty of Medicine, School of Dentistry, University of Novi Sad.
Department of Biomedical and Neuromotor Sciences, DIBINEM, University of Bologna.
Dent Mater J. 2018 Jun 8;37(3):493-500. doi: 10.4012/dmj.2017-064. Epub 2018 Mar 28.
An endodontically treated tooth with mesial-occlusal-distal (MOD) cavity is often restored with composite resin. Palatal and buccal cusp reduction (MODP, MODPB), and/or fiber-reinforced composite posts (P), are used in an attempt to improve the longevity of the restoration. The aim of this study was to determine the effects of these procedures on von Mises stress values and distribution in dental tissues and restorative materials using finite element analysis. Based on CT scans of an extracted second upper premolar, six 3D endodontically treated tooth models (MOD, MODP, MODPB, MOD+P, MODP+P, MODPB+P) were created. Each model was subjected to a summary force of 150 N on the occlusal surface simulating the normal biting pattern and maximal von Mises stresses were calculated. MODP seems to reduce von Mises stress values in dental tissues and P seems to transfer some of the stresses from dental tissues to the composite filling.
