Effect of different mucosa thickness and resiliency on stress distribution of implant-retained overdentures-2D FEA

Autor(es)

Ricardo Barao, Valentim Adelino ^[1] ; Assuncao, Wirley Gongalues ^[1] ; Tabata, Lucas Fernando ^[1] ; Capello de Sousa, Edson Antonio ^[2] ; Rocha, Eduardo Passos ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Paulista, Aracatuba Dent Sch, Dept Dent Mat & Prosthodont, BR-16015050 Sao Paulo - Brazil

^[2] Univ Estadual Paulista, Bauru Engn Sch, Dept Mech Engn, BR-16015050 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: COMPUTER METHODS AND PROGRAMS IN BIOMEDICINE; v. 92, n. 2, p. 213-223, NOV 2008.
• Citações Web of Science: 27

Resumo

The study aimed to evaluate the effect of different mucosa thickness and resiliency on stress distribution of implant-retained overdentures using a two-dimensional finite element analysis. Models were used in order to simulate two situations. In group A, model represented an edentulous mandible supporting an overdenture retained by two-splinted-implants connected with bar-clip system while in group B, model simulated an edentulous mandible supporting an overdenture retained by two-splinted-implants connected with bar-clip system associated with two-distally placed o'ring system. In each group, mucosa assumed three characteristics of thickness (1, 3 and 5 mm) in the resiliencies: hard, resilient and soft, respectively Evaluation was performed on Ansys software. Group A showed higher stress values regardless of the mucosa characteristics. Overall, stress decreased at the supporting tissues as mucosa. thickness and resiliency increased. Regarding supporting tissues, cortical bone showed the highest stress values. The use of bar-clip attachment system with distally placed o'ring attachment design optimized the stress distribution. (C) 2008 Elsevier Ireland Ltd. All rights reserved. (AU)

• Processo FAPESP: 06/52230-6 - Análise da influência dos sistemas de retenção para overdentures implanto-retidas e da espessura e resiliência da fibromucosa na distribuição interna das tensões, através do método de elementos finitos bidimensional
• Beneficiário: Valentim Adelino Ricardo Barão
• Modalidade de apoio: Bolsas no Brasil - Mestrado
• Processo FAPESP: 06/59770-6 - Análise da influência dos sistemas de retenção para overdentures implanto-retidas e da espessura e resiliência da da fibromucosa na distribuição interna das tensões, através do método de elementos finitos bidimensional
• Beneficiário: Wirley Goncalves Assuncao
• Modalidade de apoio: Auxílio à Pesquisa - Regular