The Influence of Custom-Milled Framework Design for an Implant-Supported Full-Arch Fixed Dental Prosthesis: 3D-FEA Study

João Paulo Mendes Tribst, Amanda Maria de Oliveira Dal Piva, Roberto Lo Giudice, Alexandre Luiz Souto Borges, Marco Antonio Bottino, Ettore Epifania and Pietro Ausiello
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João Paulo Mendes Tribst: Department of Dental Materials and Prosthodontics at São Paulo State University (Unesp), Institute of Science and Technology, São Paulo 01049-010, Brazil
Amanda Maria de Oliveira Dal Piva: Department of Dental Materials and Prosthodontics at São Paulo State University (Unesp), Institute of Science and Technology, São Paulo 01049-010, Brazil
Roberto Lo Giudice: Deptartment of Clinical and Experimental Medicine, Messina University, 98100 Messina, Italy
Alexandre Luiz Souto Borges: Department of Dental Materials and Prosthodontics at São Paulo State University (Unesp), Institute of Science and Technology, São Paulo 01049-010, Brazil
Marco Antonio Bottino: Department of Dental Materials and Prosthodontics at São Paulo State University (Unesp), Institute of Science and Technology, São Paulo 01049-010, Brazil
Ettore Epifania: Department of Neurosciences, Reproductive and Odontostomatological Sciences, School of Dentistry, University of Naples Federico II, S, via Sergio Pansini n. 5, 80131 Napoli, Italy
Pietro Ausiello: Department of Neurosciences, Reproductive and Odontostomatological Sciences, School of Dentistry, University of Naples Federico II, S, via Sergio Pansini n. 5, 80131 Napoli, Italy

IJERPH, 2020, vol. 17, issue 11, 1-12

Abstract: The current study aimed to evaluate the mechanical behavior of two different maxillary prosthetic rehabilitations according to the framework design using the Finite Element Analysis. An implant-supported full-arch fixed dental prosthesis was developed using a modeling software. Two conditions were modeled: a conventional casted framework and an experimental prosthesis with customized milled framework. The geometries of bone, prostheses, implants and abutments were modeled. The mechanical properties and friction coefficient for each isotropic and homogeneous material were simulated. A load of 100 N load was applied on the external surface of the prosthesis at 30° and the results were analyzed in terms of von Mises stress, microstrains and displacements. In the experimental design, a decrease of prosthesis displacement, bone strain and stresses in the metallic structures was observed, except for the abutment screw that showed a stress increase of 19.01%. The conventional design exhibited the highest stress values located on the prosthesis framework (29.65 MPa) between the anterior implants, in comparison with the experimental design (13.27 MPa in the same region). An alternative design of a stronger framework with lower stress concentration was reported. The current study represents an important step in the design and analysis of implant-supported full-arch fixed dental prosthesis with limited occlusal vertical dimension.

Keywords: finite elements analysis; computer assisted numerical analyses; mechanical stress; implants prosthetic dentistry; fixed full-arch prosthesis; biomechanics. (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2020
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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