Effect of air-particle-abrasion protocols on surface roughness and early biofilm formation of zirconia

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade de Braz Cubas-
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorLaureate Universities-
Autor(es): dc.contributorFederal University of Rio Grande do Norte (UFRN)-
Autor(es): dc.creatorMacedo, Vanessa Cruz-
Autor(es): dc.creatorPereira, Priscilla Cristoforides [UNESP]-
Autor(es): dc.creatorde Queiroz, José Renato Cavalvanti-
Autor(es): dc.creatorde Oliveira Dal Piva, Amanda Maria [UNESP]-
Autor(es): dc.creatorMoura, Dayanne Monielle Duarte [UNESP]-
Autor(es): dc.creatorTangof, Rubens Nisie-
Autor(es): dc.creatorBottino, Marco Antonio [UNESP]-
Autor(es): dc.creatorde Assunção e Souza, Rodrigo Othávio-
Data de aceite: dc.date.accessioned2022-02-22T00:34:12Z-
Data de disponibilização: dc.date.available2022-02-22T00:34:12Z-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2020-04-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.3290/j.ohpd.a44321-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/201677-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/201677-
Descrição: dc.descriptionPurpose: The air-particle-abrasion on zirconia in the gingival area of connectors and pontics in fixed partial dentures appears to increase fracture resistance. This study evaluated 'in situ' biofilm formation on the zirconia surface after different air-particle-abrasion protocols. Materials and Methods: Ninety sintered blocks (5 x 5 x 2 mm) of yttrium partially stabilised zirconia (Y-TZP) were obtained and randomised among nine groups according to the factors 'type of particle' (Alumina 50 and 110 μm; Cojet and Rocatec) and 'pressure' (2.5 and 3.5 bar) used for sandblasting for 10 s. The surface roughness (Ra/ Rz) was measured before and after sandblasting. For the in-situ analyses, custom-made removable intraoral devices n = 10 with one sample of each group attached to the buccal area were used by volunteers for 8 h at night. The specimens were analysed under confocal microscopy to quantify both biovolume and thickness of the initial biofilm formed. One-way analysis of variance (ANOVA) and Dunnett's tests were performed (5%). Results: The roughness values ranged from 0.05 to 0.39 μm for Ra and from 0.35 to 2.11 μm for Rz, p = 0.00. Mean biofilm thickness ranged from 0.06 and 0.54 μm (p = 0.005), while the biovolume values were between 0.02 and 0.61 μm3/μm2 (p = 0.002). Values statistically significant for biofilm thickness and biovolume were found in groups sandblasted with Rocatec using 3.5 bar. Conclusion: In order to increase the fracture resistance of zirconia fixed partial dentures (FPDs), the air particle abrasion of zirconia with SiO2 (110 μm/3.5 bar), in the gingival area of connectors and pontics, should be avoided.-
Descrição: dc.descriptionDepartment of Dentistry Universidade de Braz Cubas-
Descrição: dc.descriptionDepartment Dental Materials and Prosthodontics São Paulo State University (Unesp) Institute of Science and Technology-
Descrição: dc.descriptionDepartment of Biotecnology UnP Laureate Universities-
Descrição: dc.descriptionDepartment of Dentistry Federal University of Rio Grande do Norte (UFRN)-
Descrição: dc.descriptionDepartment of Dentistry Prosthodontic Division Federal University of Rio Grande do Norte (UFRN)-
Descrição: dc.descriptionDepartment Dental Materials and Prosthodontics São Paulo State University (Unesp) Institute of Science and Technology-
Formato: dc.format153-159-
Idioma: dc.languageen-
Relação: dc.relationOral Health and Preventive Dentistry-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectBlasting-
Palavras-chave: dc.subjectScanning electron microscopy-
Palavras-chave: dc.subjectSurface roughness-
Palavras-chave: dc.subjectZirconia-
Título: dc.titleEffect of air-particle-abrasion protocols on surface roughness and early biofilm formation of zirconia-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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