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

Detalhes bibliográficos
Autor(a) principal: Santana, Luis Carlos L. [UNESP]
Data de Publicação: 2021
Outros Autores: Guastaldi, Fernando Pozzi S. [UNESP], Idogava, Henrique T., Noritomi, Pedro Y., De Foggi, Camila C. [UNESP], Vaz, Luis G. [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.11607/jomi.8150
http://hdl.handle.net/11449/205972
Resumo: Purpose: 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
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spelling Mechanical Stress Analysis of Different Configurations of the AII-on-4 Concept in Atrophic Mandible: A 3D Finite Element Studydental implantsfinite element analysismechanical stressshort implantsPurpose: 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.8150Department of Diagnosis and Surgery São Paulo State University (Unesp) School of DentistryDepartment of Oral and Maxillofacial Surgery Massachusetts General HospitalDepartment of Integrated Systems Faculty of Mechanical Engineering State University of Campinas (Unicamp)3D Technology Core Renato Archer Information Technology CenterChemistry Department Federal University of São Carlos (UFSCar)Department of Dental Materials and Prosthodontics São Paulo State University (Unesp) School of DentistryDepartment of Diagnosis and Surgery São Paulo State University (Unesp) School of DentistryDepartment of Dental Materials and Prosthodontics São Paulo State University (Unesp) School of DentistryUniversidade Estadual Paulista (Unesp)Massachusetts General HospitalUniversidade Estadual de Campinas (UNICAMP)Renato Archer Information Technology CenterUniversidade Federal de São Carlos (UFSCar)Santana, Luis Carlos L. [UNESP]Guastaldi, Fernando Pozzi S. [UNESP]Idogava, Henrique T.Noritomi, Pedro Y.De Foggi, Camila C. [UNESP]Vaz, Luis G. [UNESP]2021-06-25T10:24:28Z2021-06-25T10:24:28Z2021-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article75-85http://dx.doi.org/10.11607/jomi.8150International Journal of Oral and Maxillofacial Implants, v. 36, n. 1, p. 75-85, 2021.1942-44340882-2786http://hdl.handle.net/11449/20597210.11607/jomi.81502-s2.0-85101755237Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengInternational Journal of Oral and Maxillofacial Implantsinfo:eu-repo/semantics/openAccess2021-10-22T20:18:48Zoai:repositorio.unesp.br:11449/205972Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-06T00:06:23.300117Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Mechanical Stress Analysis of Different Configurations of the AII-on-4 Concept in Atrophic Mandible: A 3D Finite Element Study
title Mechanical Stress Analysis of Different Configurations of the AII-on-4 Concept in Atrophic Mandible: A 3D Finite Element Study
spellingShingle Mechanical Stress Analysis of Different Configurations of the AII-on-4 Concept in Atrophic Mandible: A 3D Finite Element Study
Santana, Luis Carlos L. [UNESP]
dental implants
finite element analysis
mechanical stress
short implants
title_short Mechanical Stress Analysis of Different Configurations of the AII-on-4 Concept in Atrophic Mandible: A 3D Finite Element Study
title_full Mechanical Stress Analysis of Different Configurations of the AII-on-4 Concept in Atrophic Mandible: A 3D Finite Element Study
title_fullStr Mechanical Stress Analysis of Different Configurations of the AII-on-4 Concept in Atrophic Mandible: A 3D Finite Element Study
title_full_unstemmed Mechanical Stress Analysis of Different Configurations of the AII-on-4 Concept in Atrophic Mandible: A 3D Finite Element Study
title_sort Mechanical Stress Analysis of Different Configurations of the AII-on-4 Concept in Atrophic Mandible: A 3D Finite Element Study
author Santana, Luis Carlos L. [UNESP]
author_facet Santana, Luis Carlos L. [UNESP]
Guastaldi, Fernando Pozzi S. [UNESP]
Idogava, Henrique T.
Noritomi, Pedro Y.
De Foggi, Camila C. [UNESP]
Vaz, Luis G. [UNESP]
author_role author
author2 Guastaldi, Fernando Pozzi S. [UNESP]
Idogava, Henrique T.
Noritomi, Pedro Y.
De Foggi, Camila C. [UNESP]
Vaz, Luis G. [UNESP]
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
Massachusetts General Hospital
Universidade Estadual de Campinas (UNICAMP)
Renato Archer Information Technology Center
Universidade Federal de São Carlos (UFSCar)
dc.contributor.author.fl_str_mv Santana, Luis Carlos L. [UNESP]
Guastaldi, Fernando Pozzi S. [UNESP]
Idogava, Henrique T.
Noritomi, Pedro Y.
De Foggi, Camila C. [UNESP]
Vaz, Luis G. [UNESP]
dc.subject.por.fl_str_mv dental implants
finite element analysis
mechanical stress
short implants
topic dental implants
finite element analysis
mechanical stress
short implants
description Purpose: 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
publishDate 2021
dc.date.none.fl_str_mv 2021-06-25T10:24:28Z
2021-06-25T10:24:28Z
2021-01-01
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.11607/jomi.8150
International Journal of Oral and Maxillofacial Implants, v. 36, n. 1, p. 75-85, 2021.
1942-4434
0882-2786
http://hdl.handle.net/11449/205972
10.11607/jomi.8150
2-s2.0-85101755237
url http://dx.doi.org/10.11607/jomi.8150
http://hdl.handle.net/11449/205972
identifier_str_mv International Journal of Oral and Maxillofacial Implants, v. 36, n. 1, p. 75-85, 2021.
1942-4434
0882-2786
10.11607/jomi.8150
2-s2.0-85101755237
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv International Journal of Oral and Maxillofacial Implants
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 75-85
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
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