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

Author(s)

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]

Affiliation

^[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

• Document type: Journal article
• Source: COMPUTER METHODS IN BIOMECHANICS AND BIOMEDICAL ENGINEERING; v. 13, n. 5, p. 515-521, 2010.
• Web of Science Citations: 3

Abstract

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)

• FAPESP's process: 06/02336-2 - Biomimetic interpretation in ceramic restorations on natural tooth and implant by finite element analysis
• Grantee: Amilcar Chagas Freitas Júnior
• Support Opportunities: Scholarships in Brazil - Master