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

Detalhes bibliográficos
Autor(a) principal: Macedo, Vanessa Cruz
Data de Publicação: 2020
Outros Autores: Pereira, Priscilla Cristoforides [UNESP], de Queiroz, José Renato Cavalvanti, de Oliveira Dal Piva, Amanda Maria [UNESP], Moura, Dayanne Monielle Duarte [UNESP], Tangof, Rubens Nisie, Bottino, Marco Antonio [UNESP], de Assunção e Souza, Rodrigo Othávio
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.3290/j.ohpd.a44321
http://hdl.handle.net/11449/201677
Resumo: Purpose: 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.
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spelling Effect of air-particle-abrasion protocols on surface roughness and early biofilm formation of zirconiaBlastingScanning electron microscopySurface roughnessZirconiaPurpose: 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.Department of Dentistry Universidade de Braz CubasDepartment Dental Materials and Prosthodontics São Paulo State University (Unesp) Institute of Science and TechnologyDepartment of Biotecnology UnP Laureate UniversitiesDepartment of Dentistry Federal University of Rio Grande do Norte (UFRN)Department of Dentistry Prosthodontic Division Federal University of Rio Grande do Norte (UFRN)Department Dental Materials and Prosthodontics São Paulo State University (Unesp) Institute of Science and TechnologyUniversidade de Braz CubasUniversidade Estadual Paulista (Unesp)Laureate UniversitiesFederal University of Rio Grande do Norte (UFRN)Macedo, Vanessa CruzPereira, Priscilla Cristoforides [UNESP]de Queiroz, José Renato Cavalvantide Oliveira Dal Piva, Amanda Maria [UNESP]Moura, Dayanne Monielle Duarte [UNESP]Tangof, Rubens NisieBottino, Marco Antonio [UNESP]de Assunção e Souza, Rodrigo Othávio2020-12-12T02:38:52Z2020-12-12T02:38:52Z2020-04-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article153-159http://dx.doi.org/10.3290/j.ohpd.a44321Oral Health and Preventive Dentistry, v. 18, n. 2, p. 153-159, 2020.1757-99961602-1622http://hdl.handle.net/11449/20167710.3290/j.ohpd.a443212-s2.0-85082979325Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengOral Health and Preventive Dentistryinfo:eu-repo/semantics/openAccess2021-10-22T20:56:10Zoai:repositorio.unesp.br:11449/201677Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462021-10-22T20:56:10Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Effect of air-particle-abrasion protocols on surface roughness and early biofilm formation of zirconia
title Effect of air-particle-abrasion protocols on surface roughness and early biofilm formation of zirconia
spellingShingle Effect of air-particle-abrasion protocols on surface roughness and early biofilm formation of zirconia
Macedo, Vanessa Cruz
Blasting
Scanning electron microscopy
Surface roughness
Zirconia
title_short Effect of air-particle-abrasion protocols on surface roughness and early biofilm formation of zirconia
title_full Effect of air-particle-abrasion protocols on surface roughness and early biofilm formation of zirconia
title_fullStr Effect of air-particle-abrasion protocols on surface roughness and early biofilm formation of zirconia
title_full_unstemmed Effect of air-particle-abrasion protocols on surface roughness and early biofilm formation of zirconia
title_sort Effect of air-particle-abrasion protocols on surface roughness and early biofilm formation of zirconia
author Macedo, Vanessa Cruz
author_facet Macedo, Vanessa Cruz
Pereira, Priscilla Cristoforides [UNESP]
de Queiroz, José Renato Cavalvanti
de Oliveira Dal Piva, Amanda Maria [UNESP]
Moura, Dayanne Monielle Duarte [UNESP]
Tangof, Rubens Nisie
Bottino, Marco Antonio [UNESP]
de Assunção e Souza, Rodrigo Othávio
author_role author
author2 Pereira, Priscilla Cristoforides [UNESP]
de Queiroz, José Renato Cavalvanti
de Oliveira Dal Piva, Amanda Maria [UNESP]
Moura, Dayanne Monielle Duarte [UNESP]
Tangof, Rubens Nisie
Bottino, Marco Antonio [UNESP]
de Assunção e Souza, Rodrigo Othávio
author2_role author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade de Braz Cubas
Universidade Estadual Paulista (Unesp)
Laureate Universities
Federal University of Rio Grande do Norte (UFRN)
dc.contributor.author.fl_str_mv Macedo, Vanessa Cruz
Pereira, Priscilla Cristoforides [UNESP]
de Queiroz, José Renato Cavalvanti
de Oliveira Dal Piva, Amanda Maria [UNESP]
Moura, Dayanne Monielle Duarte [UNESP]
Tangof, Rubens Nisie
Bottino, Marco Antonio [UNESP]
de Assunção e Souza, Rodrigo Othávio
dc.subject.por.fl_str_mv Blasting
Scanning electron microscopy
Surface roughness
Zirconia
topic Blasting
Scanning electron microscopy
Surface roughness
Zirconia
description Purpose: 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.
publishDate 2020
dc.date.none.fl_str_mv 2020-12-12T02:38:52Z
2020-12-12T02:38:52Z
2020-04-01
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/10.3290/j.ohpd.a44321
Oral Health and Preventive Dentistry, v. 18, n. 2, p. 153-159, 2020.
1757-9996
1602-1622
http://hdl.handle.net/11449/201677
10.3290/j.ohpd.a44321
2-s2.0-85082979325
url http://dx.doi.org/10.3290/j.ohpd.a44321
http://hdl.handle.net/11449/201677
identifier_str_mv Oral Health and Preventive Dentistry, v. 18, n. 2, p. 153-159, 2020.
1757-9996
1602-1622
10.3290/j.ohpd.a44321
2-s2.0-85082979325
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Oral Health and Preventive Dentistry
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 153-159
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
_version_ 1799964395970756608