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Biomechanical Evaluation of Different Implant-Abutment Connections, Retention Systems, and Restorative Materials in the Implant-Supported Single Crowns Using 3D Finite Element Analysis.
Lemos, Cleidiel Aparecido Araujo; Verri, Fellippo Ramos; Noritomi, Pedro Yoshito; de Souza Batista, Victor Eduardo; Cruz, Ronaldo Silva; de Luna Gomes, Jessica Marcela; de Oliveira Limírio, João Pedro Justino; Pellizzer, Eduardo Piza.
Afiliación
  • Lemos CAA; Division of Prosthodontics, Department of Dentistry, Federal University of Juiz de Fora, Governador Valadares MG, Brazil.
  • Verri FR; Department of Dental Materials and Prosthodontics, Araçatuba Dental School, UNESP-University Estadual Paulista, Araçatuba, Sao Paulo, Brazil.
  • Noritomi PY; Renato Archer Information Technology Center, Campinas, São Paulo, Brazil.
  • de Souza Batista VE; Department of Prosthodontics, Presidente Prudente Dental School, University of the West of São Paulo, Presidente Prudente, Brazil.
  • Cruz RS; Department of Dental Materials and Prosthodontics, Araçatuba Dental School, UNESP-University Estadual Paulista, Araçatuba, Sao Paulo, Brazil.
  • de Luna Gomes JM; Department of Dental Materials and Prosthodontics, Araçatuba Dental School, UNESP-University Estadual Paulista, Araçatuba, Sao Paulo, Brazil.
  • de Oliveira Limírio JPJ; Department of Dental Materials and Prosthodontics, Araçatuba Dental School, UNESP-University Estadual Paulista, Araçatuba, Sao Paulo, Brazil.
  • Pellizzer EP; Department of Dental Materials and Prosthodontics, Araçatuba Dental School, UNESP-University Estadual Paulista, Araçatuba, Sao Paulo, Brazil.
J Oral Implantol ; 48(3): 194-201, 2022 Jun 01.
Article en En | MEDLINE | ID: mdl-34091686
This is an in silico study aimed to evaluate the biomechanical influence of different implant-abutment interfaces (external hexagon and Morse taper implants), retention systems (cement and screw retained), and restorative crowns (metal-ceramic and monolithic) using 3-dimensional finite element analysis (3D-FEA). Eight 3D models were simulated for the maxillary first molar area using InVesalius, Rhinoceros, and SolidWorks and processed using Femap and NEi Nastran software. Axial and oblique forces of 200 and 100 N, respectively, were applied on the occlusal surface of the prostheses. Microstrain and von Mises stress maps were used to evaluate the deformation (cortical bone tissue) and stress (implants/fixation screws/crowns), respectively, for each model. For both loadings, Morse taper implants had lower microstrain values than the external hexagon implants. The retention system did not affect microstrain on the cortical bone tissue under both loadings. However, the cemented prosthesis displayed higher stress with the fixation screw than the external hexagon implants. No difference was observed between the metal-ceramic and zirconia monolithic crowns in terms of microstrain and stress distribution on the cortical bone, implants, or components. Morse taper implants can be considered as a good alternative for dental implant rehabilitation because they demonstrated better biomechanical behavior for the bone and fixation screw as compared to external hexagon implants. Cement-retained prosthesis increased the stress on the fixation screw of the external hexagon implants, thereby increasing the risk of screw loosening/fracture in the posterior maxillary area. The use of metal-ceramic or monolithic crowns did not affect the biomechanical behavior of the evaluated structures.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Implantes Dentales Idioma: En Revista: J Oral Implantol Año: 2022 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Estados Unidos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Implantes Dentales Idioma: En Revista: J Oral Implantol Año: 2022 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Estados Unidos