Effectiveness of screw surface coating on the stability of zirconia abutments after cyclic loading

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorDe Almeida Basílio, Mariana-
Autor(es): dc.creatorButignon, Luis Eduardo-
Autor(es): dc.creatorFilho, João Neudenir Arioli-
Data de aceite: dc.date.accessioned2025-08-21T19:53:25Z-
Data de disponibilização: dc.date.available2025-08-21T19:53:25Z-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2012-01-01-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/227183-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/227183-
Descrição: dc.descriptionPurpose: Different surface treatments have been developed in attempts to prevent the loosening of abutment screws. The aim of the current study was to compare the effectiveness of titanium alloy screws with tungsten-doped diamond-like carbon (W-DLC) coating and uncoated screws in providing stability to zirconia (ZrO2) ceramic abutments after cyclic loading. Materials and Methods: Twenty prefabricated ZrO2 ceramic abutments on their respective external-hex implants were divided into two groups of equal size according to the type of screw used: uncoated titanium alloy screw (Ti) or titanium alloy screw with W-DLC coating (W-DLC/Ti). The removal torque value (preload) of the abutment screw was measured before and after loading. Cyclic loading between 11 and 211 N was applied at an angle of 30 degrees to the long axis of the implants at a frequency of 15 Hz. A target of 0.5 × 106 cycles was defined. Group means were calculated and compared using analysis of variance and the F test (α = .05). Results: Before cyclic loading, the preload for Ti screws was significantly higher than that for W-DLC/Ti screws (P = .021). After cyclic loading, there was no significant difference between them (P = .499). Conclusions: Under the studied conditions, it can be concluded that, after cyclic loading, both abutment screws presented a significant reduction in the mean retained preload and similar effectiveness in maintaining preload. © 2012 by Quintessence Publishing Co Inc.-
Descrição: dc.descriptionDepartment of Dental Materials and Prosthodontics Araraquara Dental School UNESP-Universidade Estadual Paulista, São Paulo-
Descrição: dc.descriptionDepartment of Dental Materials and Prosthodontics Araraquara Dental School UNESP-Universidade Estadual Paulista, São Paulo-
Formato: dc.format1061-1067-
Idioma: dc.languageen-
Relação: dc.relationInternational Journal of Oral and Maxillofacial Implants-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectAbutment screws-
Palavras-chave: dc.subjectCyclic loading-
Palavras-chave: dc.subjectImplant preload-
Palavras-chave: dc.subjectScrew coating surface-
Palavras-chave: dc.subjectZirconia abutment-
Título: dc.titleEffectiveness of screw surface coating on the stability of zirconia abutments after cyclic loading-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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