The effect of occlusal reduction and different CAD-CAM materials on stress distribution in endocrown restorations: A three-dimensional finite element analysis

Aim: The aim of this study was to examine the effects various preparation types and restorative materials on endocrown restorations applied endodontically treated maxillary first molars stress distribution related tissues. Methodology: A three-dimensional (3D) image a previously extracted intact tooth obtained with CBCT. resulting .dicom files were imported into Mimics. Enamel, dentine, pulp separated as an STL file. Four groups determined prepared in SolidWorks. 3D images relevant finite element analysis software (ABAQUS, 2020 Dassault Systems Simulation Corp., Johnston, RI, USA), load 600 N at occlusal area each model axial direction. Models divided three according material type: Vita Suprinity (VS; VITA Zahnfabrik, Bad Sackingen, Germany), Cerasmart (CS; GC Tokyo, Japan), Shofu Block HC (SB; Shofu, Kyoto, Japan). type cement used RelyX ARC (3M ESPE, MN, USA). Results: Regardless results, any tissue or restoration did not exceed strength limits. In models cusp preparation, dental tissues lower. Higher generally observed which lingual healthy. On other hand, occurring zirconia-reinforced glass ceramics (VS) is higher than ceramic resin matrix (CS, SB). It has been that transmitted supporting Conclusion: Endocrown can be molars. addition, when only one healthy excessive loss coronal structure, reducing beneficial terms How cite article: Tolu Gİ, Güntekin N, Mohammadi R, Demirel MG. effect reduction different CAD-CAM restorations: analysis. Int Dent Res 2022;12(Suppl.1):22-8. https://doi.org/10.5577/intdentres.461