Mechanical Stress Analysis of Different Configurations of the AII-on-4 Concept in Atrophic Mandible: A 3D Finite Element Study

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Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorMassachusetts General Hospital-
Autor(es): dc.contributorUniversidade Estadual de Campinas (UNICAMP)-
Autor(es): dc.contributorRenato Archer Information Technology Center-
Autor(es): dc.contributorUniversidade Federal de São Carlos (UFSCar)-
Autor(es): dc.creatorSantana, Luis Carlos L. [UNESP]-
Autor(es): dc.creatorGuastaldi, Fernando Pozzi S. [UNESP]-
Autor(es): dc.creatorIdogava, Henrique T.-
Autor(es): dc.creatorNoritomi, Pedro Y.-
Autor(es): dc.creatorDe Foggi, Camila C. [UNESP]-
Autor(es): dc.creatorVaz, Luis G. [UNESP]-
Data de aceite: dc.date.accessioned2022-02-22T00:45:49Z-
Data de disponibilização: dc.date.available2022-02-22T00:45:49Z-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2020-12-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.11607/jomi.8150-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/205972-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/205972-
Descrição: dc.descriptionPurpose: This study evaluated the mechanical behavior of different configurations of the AII-on-4 treatment concept designed with straight short (6-mm-length), straight standard (11-mm-length), or tilted standard (30-degree angled; 11-mm-length) posterior implants. Materials and Methods: The AII-on-4 configurations were performed in atrophic mandible models and consisted of anterior straight standard and posterior tilted standard implants (H1 model), anterior straight standard and posterior straight short implants (H2 model), and anterior and posterior straight standard implants (H3 model). Three oblique forces of 100 N were simulated in the posterior region of the prosthetic bar. The values of stress were obtained for the ductile materials using the von Mises equivalent stress (σvm) criteria. The stress peaks in the peri-implant bone crest were measured by the maximum (σmax) and minimum (σmin) principal stresses. The two-way analysis of variance (two-way ANOVA) and Tukey post hoc tests determined significant differences (P < .01) of stress values among the ductile materials (implant and prosthetic components). Results: The use of tilted standard posterior implants (H1 model) showed the lowest values of σmax and σmin in the posterior region of the peri-implant bone area. On the other hand, the use of straight short (H2 model) or straight standard (H3 model) posterior implants significantly reduced the von Mises mean stresses in the bar screws, abutments, and abutment screws (P < .01). Conclusion: The higher odds of technical failures (screw fracture/loosening) may be expected when the AII-on-4 configuration is performed with tilted standard posterior implants. Also, peri-implant bone overload may occur when the AII-on-4 design is performed with straight short or straight standard posterior implants in atrophic mandibles. Int J Oral Maxillofac Implants 2021;36:75–85. doi:10.11607/jomi.8150-
Descrição: dc.descriptionDepartment of Diagnosis and Surgery São Paulo State University (Unesp) School of Dentistry-
Descrição: dc.descriptionDepartment of Oral and Maxillofacial Surgery Massachusetts General Hospital-
Descrição: dc.descriptionDepartment of Integrated Systems Faculty of Mechanical Engineering State University of Campinas (Unicamp)-
Descrição: dc.description3D Technology Core Renato Archer Information Technology Center-
Descrição: dc.descriptionChemistry Department Federal University of São Carlos (UFSCar)-
Descrição: dc.descriptionDepartment of Dental Materials and Prosthodontics São Paulo State University (Unesp) School of Dentistry-
Descrição: dc.descriptionDepartment of Diagnosis and Surgery São Paulo State University (Unesp) School of Dentistry-
Descrição: dc.descriptionDepartment of Dental Materials and Prosthodontics São Paulo State University (Unesp) School of Dentistry-
Formato: dc.format75-85-
Idioma: dc.languageen-
Relação: dc.relationInternational Journal of Oral and Maxillofacial Implants-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectdental implants-
Palavras-chave: dc.subjectfinite element analysis-
Palavras-chave: dc.subjectmechanical stress-
Palavras-chave: dc.subjectshort implants-
Título: dc.titleMechanical Stress Analysis of Different Configurations of the AII-on-4 Concept in Atrophic Mandible: A 3D Finite Element Study-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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