title: Finite element analysis of thermal stress distribution in different restorative materials used in class V cavities.
abstract: OBJECTIVE
  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.
  
  
  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).
  
  
  CONCLUSIONS
  Amalgam is the most suitable restorative material for class V restorations because of minimal stress distribution.
authors.forename: M S
authors.initials: MS
authors.lastname: Guler
authors.forename: C
authors.initials: C
authors.lastname: Guler
authors.forename: F
authors.initials: F
authors.lastname: Cakici
authors.affiliation: Department of Endodontics, Faculty of Dentistry, Ordu University, Ordu, Turkey.
authors.forename: E B
authors.initials: EB
authors.lastname: Cakici
authors.forename: S
authors.initials: S
authors.lastname: Sen
mesh_terms: D003188:Composite Resins / Q000737:chemistry; D003723:Dental Amalgam / Q000737:chemistry; D003731:Dental Caries; D003737:Dental Cavity Preparation; D003764:Dental Materials / Q000737:chemistry*; D003793:Dental Restoration, Permanent / Q000379:methods*; D003799:Dental Stress Analysis; D020342:Finite Element Analysis; D005899:Glass Ionomer Cements / Q000737:chemistry; D006801:Humans; D008963:Molar / Q000502:physiology*; D013314:Stress, Mechanical; D013499:Surface Properties; D014070:Tooth
chemical_list: D003188:Composite Resins; D003764:Dental Materials; D005899:Glass Ionomer Cements; D003723:Dental Amalgam