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(Referência obtida automaticamente do SciELO, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Retention System and Splinting on Morse Taper Implants in the Posterior Maxilla by 3D Finite Element Analysis

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Autor(es):
Cleidiel Aparecido Araujo Lemos [1] ; Fellippo Ramos Verri [2] ; Joel Ferreira Santiago Júnior [3] ; Daniel Augusto de Faria Almeida [4] ; Victor Eduardo de Souza Batista [5] ; Pedro Yoshito Noritomi [6] ; duardo Piza Pellizzer [7]
Número total de Autores: 7
Afiliação do(s) autor(es):
[1] Universidade Estadual Paulista. Araçatuba Dental School. Department of Dental Materials and Prosthodontics - Brasil
[2] Universidade Estadual Paulista. Araçatuba Dental School. Department of Dental Materials and Prosthodontics - Brasil
[3] Universidade do Sagrado Coração. University of Sacred Heart. Department of Health Sciences - Brasil
[4] Universidade Federal de Alfenas. Department of Restorative Dentistry - Brasil
[5] Universidade Estadual Paulista. Araçatuba Dental School. Department of Dental Materials and Prosthodontics - Brasil
[6] Renato Archer Information Technology Center - Brasil
[7] Universidade Estadual Paulista. Araçatuba Dental School. Department of Dental Materials and Prosthodontics - Brasil
Número total de Afiliações: 7
Tipo de documento: Artigo Científico
Fonte: Brazilian Dental Journal; v. 29, n. 1, p. 30-35, 2018-02-00.
Resumo

Abstract The purpose of this study was to evaluate different retention systems (cement- or screw-retained) and crown designs (non-splinted or splinted) of fixed implant-supported restorations, in terms of stress distributions in implants/components and bone tissue, by 3-dimensional (3D) finite element analysis. Four 3D models were simulated with the InVesalius, Rhinoceros 3D, and SolidWorks programs. Models were made of type III bone from the posterior maxillary area. Models included three 4.0-mm-diameter Morse taper (MT) implants with different lengths, which supported metal-ceramic crowns. Models were processed by the Femap and NeiNastran programs, using an axial force of 400 N and oblique force of 200 N. Results were visualized as the von Mises stress and maximum principal stress (σmax). Under axial loading, there was no difference in the distribution of stress in implants/components between retention systems and splinted crowns; however, in oblique loading, cemented prostheses showed better stress distribution than screwed prostheses, whereas splinted crowns tended to reduce stress in the implant of the first molar. In the bone tissue cemented prostheses showed better stress distribution in bone tissue than screwed prostheses under axial and oblique loading. The splinted design only had an effect in the screwed prosthesis, with no influence in the cemented prosthesis. Cemented prostheses on MT implants showed more favorable stress distributions in implants/components and bone tissue. Splinting was favorable for stress distribution only for screwed prostheses under oblique loading. (AU)

Processo FAPESP: 14/02490-8 - Análise da distribuição de tensões em reabilitação com implantes cone morse em maxilar posterior: estudo pelo MEF 3D não linear
Beneficiário:Cleidiel Aparecido Araujo Lemos
Modalidade de apoio: Bolsas no Brasil - Mestrado