Mechanics of the maxillary central incisor. Influence of the periodontal ligament represented by beam elements

Autor(es)

Freitas Junior, Amilcar Chagas ^[1] ; Rocha, Eduardo Passos ^[1] ; dos Santos, Paulo Henrique ^[1] ; Ko, Ching-Chang ^[2] ; Martin Junior, Manoel ^[1] ; de Almeida, Erika Oliveira ^[1]

Afiliação do(s) autor(es)

^[1] Sao Paulo State Univ, Aracatuba Dent Sch, Dept Dent Mat & Prosthodont, Sao Paulo - Brazil

^[2] Univ N Carolina, Sch Dent, Dept Orthodont, Chapel Hill, NC 27599 - USA

• Tipo de documento: Artigo Científico
• Fonte: COMPUTER METHODS IN BIOMECHANICS AND BIOMEDICAL ENGINEERING; v. 13, n. 5, p. 515-521, 2010.
• Citações Web of Science: 3

Resumo

This study aimed to evaluate the influence of loading on a maxillary central incisor with the periodontal ligament (PDL) represented by 2D elastic beam elements using a 2D finite element analysis. Two models (M) were built varying the PDL representation: Mh (homogeneous PDL) and Mht (heterogeneous PDL with beam3 elements). Stress and displacements were determined for three loading conditions (L): Ll, lingual face loading at 45 degrees with the tooth long axis; Li, perpendicular to the incisal edge; and Lip, on the incisal edge, parallel to the tooth long axis. Evaluation was performed on ANSYS software. Lip provided lower stress variation on the tooth and support structures when compared to Ll and Li. PDL's influence on stress values was lower for Lip. Oblique loading showed stress and displacement not observed in parallel loading condition through PDL's heterogeneous representation and it is probably incompatible with the in vivo condition. (AU)

• Processo FAPESP: 06/02336-2 - Interpretação biomimética em restaurações cerâmicas sobre dente natural e implante: estudo através do método dos elementos finitos
• Beneficiário: Amilcar Chagas Freitas Júnior
• Modalidade de apoio: Bolsas no Brasil - Mestrado