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ORIGINAL ARTICLE
Year : 2016  |  Volume : 19  |  Issue : 1  |  Page : 30-34

Finite element analysis of thermal stress distribution in different restorative materials used in class V cavities


1 Department of Maritime Transportation and Management Engineering, Fatsa Faculty of Marine Sciences, Ordu University, Turkey
2 Department of Pediatric Dentistry, Faculty of Dentistry, Ordu University, Ordu, Turkey
3 Department of Endodontics, Faculty of Dentistry, Ordu University, Ordu, Turkey
4 Department of Construction and Manufacturing, Faculty of Mechanical Engineering, Ataturk University, Erzurum, Turkey

Correspondence Address:
E B Cakici
Department of Endodontics, Faculty of Dentistry, Ordu University, Ordu
Turkey
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/1119-3077.173702

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Purpose: Cervical lesions are restored with class V preparation. The aim of this study was to use a three-dimensional finite element method to carry out a thermal analysis of the temperature and stress distributions of three different restorative materials used for class V cavities of maxillary molar teeth. Materials and Methods: A maxillary left first molar tooth was modeled and a class V cavity was prepared on the cervical 1/3 of the buccal surface. This cavity was restored with three different materials (Group I: Resin composite, Group II: Glass ionomer cement, and Group III: Amalgam). Loads of 400 N were applied at an angle of 90° to the longitudinal axis of the tooth on the restorative material at 5 and 55°C temperatures. Von Mises and thermal stress distributions were evaluated. Results: In all groups, the von Mises stress values increased with temperature. The highest von Mises stress distribution was observed at 55°C in Group II (144.53 MPa). The lowest von Mises stress distribution was observed at 5°C in Group III (70.81 MPa). Conclusion: Amalgam is the most suitable restorative material for class V restorations because of minimal stress distribution.


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