Influence of the dental implant number and load direction on stress distribution in a 3-unit implant-supported fixed dental prosthesis

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dc.contributor.authorSilveira, Marcos Paulo Motta [UNESP]
dc.contributor.authorCampaner, Larissa Mendes [UNESP]
dc.contributor.authorBottino, Marco Antonio [UNESP]
dc.contributor.authorNishioka, Renato Sussumu [UNESP]
dc.contributor.authorBorges, Alexandre Luiz Souto [UNESP]
dc.contributor.authorTribst, João Paulo Mendes [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2021-06-25T11:14:37Z
dc.date.available2021-06-25T11:14:37Z
dc.date.issued2021-01-01
dc.description.abstractBackground. The choice between 2 or 3 implants to support a 3-unit implant-supported fixed dental prosthesis (FDP) still generates doubt in clinical practice. Objectives. The aim of this study was to evaluate stress distribution in 3-unit implant-supported FDPs according to the implant number and load direction. Material and methods. A numerical simulation was performed to analyze stress and strain according to the implant number (2 or 3) and load direction (axial or oblique). A model of a jaw was created by means of the modeling software Rhinoceros, v. 5.0 SR8. External hexagon implants, micro-conical abutments and screws were also modeled. The final geometries were exported to the computer-aided engineering (CAE) software Ansys, v. 17.2, and all materials were considered homogeneous, isotropic and elastic. Different load directions were applied for each model (300 N) at the center of the prosthesis. Results. The von Mises stress and strain values were obtained for the titanium structures and the bone, respectively. The implant number influenced the prosthesis biomechanics, with higher stress and strain concentrations when 2 implants were simulated. The oblique load also affected the mechanical response, showing higher stress and strain in comparison with the axial load, regardless of the implant number. Conclusions. It was concluded that for a 3-unit implant-supported FDP, a greater number of implants associated with axial loads can result in a better mechanical response during chewing.en
dc.description.affiliationInstitute of Science and Technology São Paulo State University (UNESP)
dc.description.affiliationUnespInstitute of Science and Technology São Paulo State University (UNESP)
dc.format.extent69-74
dc.identifierhttp://dx.doi.org/10.17219/dmp/130847
dc.identifier.citationDental and Medical Problems, v. 58, n. 1, p. 69-74, 2021.
dc.identifier.doi10.17219/dmp/130847
dc.identifier.issn2300-9020
dc.identifier.issn1644-387X
dc.identifier.scopus2-s2.0-85104209916
dc.identifier.urihttp://hdl.handle.net/11449/208586
dc.language.isoeng
dc.relation.ispartofDental and Medical Problems
dc.sourceScopus
dc.subjectBiomechanics
dc.subjectDental implants
dc.subjectFinite element analysis
dc.subjectFixed dentures
dc.subjectStress distribution
dc.titleInfluence of the dental implant number and load direction on stress distribution in a 3-unit implant-supported fixed dental prosthesisen
dc.typeArtigo
unesp.author.orcid0000-0001-9061-8565[1]
unesp.author.orcid0000-0002-3262-2379[2]
unesp.author.orcid0000-0003-0077-3161[3]
unesp.author.orcid0000-0002-1458-601X[4]
unesp.author.orcid0000-0002-5707-7565[5]
unesp.author.orcid0000-0002-5412-3546[6]
unesp.departmentEngenharia Mecânica - FEBpt

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Bauru - FEB - Faculdade de Engenharia
Artigos - Materiais Odontológicos e Prótese - ICT