The Search for the Centre of Resistance of a Tooth Using a Finite Element Model and the Continuum Mechanics

Autor(es)

J.A.G. Sánchez ^[1] ; H.B. Coda ^[2]

Afiliação do(s) autor(es)

^[1] Universidade Federal de Itajubá. Instituto de Engenharia Mecânica - Brasil

^[2] Univ Sao Paulo, Dept Engn Estruturas, Sao Carlos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: LATIN AMERICAN JOURNAL OF SOLIDS AND STRUCTURES; v. 15, n. 5 2018-06-14.

Resumo

Abstract In orthodontics, the CR is defined as the ideal point for the positioning of the bracket. This paper presents numerical analyses of a premolar tooth, which aim at searching the centre of resistance (CR) by applying several external torques. We built the geometry of the tooth by making a tomographic renderisation with the software MIMICS. The numerical simulation is performed in the software ANSYS WORKBENCH (ANSYS® Academic Research). The domain of the tooth is discretized using three-dimensional solid elements. The search for the position of CR is made through a heuristic analysis by applying external torques to the model and, afterwards, by seeking the intersection of the neutral planes (where there is no translation). The numerical results showed that the CR is not a point, but rather a region that strongly depends on the relative stiffness between the tooth and the Periodontium (PDL). (AU)

• Processo FAPESP: 13/05810-0 - Mecânica dos Sólidos não linear com aplicações à biomecânica via Método dos Elementos Finitos
• Beneficiário: Jesus Antonio García Sánchez
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado