Effect of the occlusal splint device on the stress distribution of the fixation screws, dental implant and bone tissue around the implant in dental clenching situation: a three-dimensional finite element analysis

• Grant number: 19/18178-7
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: November 01, 2019
• End date: July 31, 2020
• Field of knowledge: Health Sciences - Dentistry - Dental Materials
• Principal Investigator: Victor Eduardo de Souza Batista
• Grantee: Lorena Scaion Silva
• Host Institution: Faculdade de Ciências da Saúde (FCSA). Universidade do Oeste Paulista (UNOESTE). Presidente Prudente , SP, Brazil

Abstract

The aim of this study will be to analyze the biomechanical behavior of three-unit fixed prosthesis in situation of parafunction oral (clenching) with or without the use of occlusal splint by 3D finite element methods. Eight 3-D models will be simulated with the software In Vesalius, SolidWorks 2010 and Rhinoceros 4.0. Each model will be represented by a posterior maxillary bone section referring to first premolar and first molar right with three dental implants (external hexagon) of 4 mm of diameter and 7 mm of length supporting 3-units fixed prosthesis varying the factors union (splinting) and the use of occlusal splint. The occlusal splint will be modeled with 2 mm of thickness. The software FEMAP 11.4.2 will be used to generate the finite element models in the pre- and post- processing steps. The bone tissue will be analyzed by maximum principal stress and microstrain maps and the fixation screws and dental implants by the von Mises stress map.