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

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Guler M. S., Guler C., Cakici F., Cakici E. B., Sen S.

NIGERIAN JOURNAL OF CLINICAL PRACTICE, cilt.19, sa.1, ss.30-34, 2016 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 19 Sayı: 1
  • Basım Tarihi: 2016
  • Doi Numarası: 10.4103/1119-3077.173702
  • Dergi Adı: NIGERIAN JOURNAL OF CLINICAL PRACTICE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.30-34
  • Anahtar Kelimeler: Amalgam, finite element method, glass ionomer cement, resin composite, thermal stress, TEMPERATURE, PREMOLAR, FLEXURE, LESIONS
  • Atatürk Üniversitesi Adresli: Evet

Özet

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 degrees to the longitudinal axis of the tooth on the restorative material at 5 and 55 degrees 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 degrees C in Group II (144.53 MPa). The lowest von Mises stress distribution was observed at 5 degrees C in Group III (70.81 MPa). Conclusion: Amalgam is the most suitable restorative material for class V restorations because of minimal stress distribution.