Non-linear 3D finite element analysis of full-arch implant-supported fixed dentures

Autor(es)

Ferreira, Mayara B. ^[1] ; Barao, Valentim A. ^[2] ; Delben, Juliana A. ^[3] ; Faverani, Leonardo P. ^[4] ; Hipolito, Ana Carolina ^[1] ; Assuncao, Wirley G. ^[1]

Afiliação do(s) autor(es)

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

^[2] Univ Campinas UNICAMP, Piracicaba Dent Sch, Dept Prosthodont & Periodontol, BR-13414903 Sao Paulo - Brazil

^[3] Univ Estadual Paulista UNESP, Araraquara Dent Sch, Dept Dent Mat & Prosthodont, BR-14801903 Sao Paulo - Brazil

^[4] Univ Estadual Paulista UNESP, Aracatuba Dent Sch, Dept Surg & Gen Clin, BR-16015050 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Materials Science & Engineering C-Materials for Biological Applications; v. 38, p. 306-314, MAY 1 2014.
• Citações Web of Science: 11

Resumo

Despite the necessity for faster clinical protocols for immediate loading of implant-supported dentures, there is a lack of biomechanical studies to confirm the rigid splinting effectiveness. We compared the stress in mandibular full-arch implant-supported fixed dentures under immediate loading through three-dimensional finite element analysis. Edentulous human mandible models were restored with a 4-implant fixed denture. Implants were splinted with a metallic framework and submitted to conventional loading (group A-control), with acrylic resin and submitted to immediate loading (group B), with a metallic framework and submitted to immediate loading (group C), and with acrylic resin and a prefabricated distal bar and submitted to immediate loading (group D). Models were supported by masticatory muscles. A 100-N oblique load was applied on the first molar. Group A presented the lowest stress and implant displacement values, whereas group D showed the highest values. In bone, groups under immediate loading exhibited the highest stress, whereas the group experiencing conventional loading showed an approximately 50% reduction. All groups submitted to immediate loading presented similar stress values in pen-implant bone. The loading protocol influenced the stress and implant displacement, but the design of the fixed denture did not affect the stress in the pen-implant bone. Rigid splinting of implants submitted to immediate loading is not essential for treatment success. (C) 2014 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 11/15172-6 - Avaliação da distribuição de tensões em próteses do tipo protocolo mandibular para carregamento imediato por meio do MEF-3D.
• Beneficiário: Mayara Barbosa Ferreira
• Modalidade de apoio: Bolsas no Brasil - Mestrado
• Processo FAPESP: 10/09857-3 - Comparação da distribuição de tensões em diferentes próteses fixas implanto-suportadas mandibulares do tipo protocolo para carregamento imediato: análise não linear por meio do MEF-3D baseado em tomografia computadorizada
• Beneficiário: Wirley Goncalves Assuncao
• Modalidade de apoio: Auxílio à Pesquisa - Regular