Mechanical evaluation of four narrow-diameter implant systems

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Autor(es): dc.contributorNew York University College of Dentistry-
Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorNew York University Abu Dhabi-
Autor(es): dc.creatorHirata, Ronaldo-
Autor(es): dc.creatorBonfante, Estevam A.-
Autor(es): dc.creatorMachado, Lucas S. [UNESP]-
Autor(es): dc.creatorTovar, Nick-
Autor(es): dc.creatorCoelho, Paulo G.-
Data de aceite: dc.date.accessioned2022-08-04T22:04:11Z-
Data de disponibilização: dc.date.available2022-08-04T22:04:11Z-
Data de envio: dc.date.issued2022-04-28-
Data de envio: dc.date.issued2022-04-28-
Data de envio: dc.date.issued2014-01-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.11607/ijp.3926-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/220207-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/220207-
Descrição: dc.descriptionPurpose: This study aimed to evaluate the survival probability of four narrow-diameter implant systems when subjected to fatigue loading. Materials and Methods: Seventytwo narrow-diameter implants to be restored with single-unit crowns were divided into four groups (n = 18): Astra Tech (3.5-mm diameter), with a standard connection (ASC); BioHorizon (3.4-mm diameter), with a standard connection (BSC); Intra-Lock (3.4-mm diameter), with a standard multilobular connection (ISC); and Intra-Lock (3.4-diameter), with a modified square connection (IMC). The corresponding abutments were screwed onto the implants, and standardized metal crowns (maxillary central incisors) were cemented and subjected to step-stress accelerated life testing in water. Use-level probability Weibull curves and reliability for 100,000 cycles at 150 and 200 N (90% two-sided confidence intervals) were calculated. Polarized light and scanning electron microscopes were used to access the failure modes. Results: The calculated survival probability for 100,000 cycles at 150 N was approximately 93% in group ASC, 98% in group BSC, 94% in group ISC, and 99% in group IMC. At 200 N, the survival rate was estimated to be approximately < 0.1% for ASC, 77% for BSC, 34% for ISC, and 93% for IMC. Abutment screw fracture was the main failure mode for all groups. Conclusions: Although the probability of survival was not significantly different among systems at a load of 150 N, a significant decrease was observed at 200 N for all groups except IMC.-
Descrição: dc.descriptionDepartment of Biomaterials and Biomimetics New York University College of Dentistry-
Descrição: dc.descriptionDepartment of Prosthodontics University of São Paulo Bauru College of Dentistry-
Descrição: dc.descriptionDepartment of Operative Dentistry São Paulo State University-
Descrição: dc.descriptionDirector of Material Analysis and Testing Laboratory New York University College of Dentistry-
Descrição: dc.descriptionDepartment of Periodontology and Implant Dentistry New York University College of Dentistry-
Descrição: dc.descriptionAffiliated Faculty Division of Engineering New York University Abu Dhabi-
Descrição: dc.descriptionDepartment of Operative Dentistry São Paulo State University-
Formato: dc.format359-362-
Idioma: dc.languageen-
Relação: dc.relationInternational Journal of Prosthodontics-
???dc.source???: dc.sourceScopus-
Título: dc.titleMechanical evaluation of four narrow-diameter implant systems-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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