Effect of ultrasonic instrumentation on the bond strength of crowns cemented with zinc phosphate cement to natural teeth. An in vitro study

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dc.contributor.authorde Melo Filho, Antonio Braulino [UNESP]
dc.contributor.authorMori, Matsuyoshi
dc.contributor.authorJardini, Maria Aparecida Neves [UNESP]
dc.contributor.authorLandim, Karine Tenório [UNESP]
dc.contributor.authorSolis, Ana Cristina de Oliveira
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionVale do Paraíba University
dc.date.accessioned2014-05-27T11:23:44Z
dc.date.available2014-05-27T11:23:44Z
dc.date.issued2008-12-01
dc.description.abstractSeveral studies have reported the benefits of sonic and/or ultrasonic instrumentation for root debridement, with most of them focusing on changes in periodontal clinical parameters. The present study investigated possible alterations in the tensile bond strength of crowns cemented with zinc phosphate cement to natural teeth after ultrasonic instrumentation. Forty recently extracted intact human third molars were selected, cleaned and stored in physiologic serum at 4°C. They received standard preparations, at a 16° convergence angle, and AgPd alloy crowns. The crowns were cemented with zinc phosphate cement and then divided into four groups of 10 teeth each. Each group was then subdivided into two subgroups, with one of the subgroups being submitted to 5,000 thermal cycles ranging from 55 ± 2 to 5 ± 2°C, while the other was not. Each group was submitted to ultrasonic instrumentation for different periods of time: group 1 - 0 min (control), group 2 - 5 min, group 3 - 10 min, and group 4 - 15 min. Tensile bond strength tests were performed with an Instron testing machine (model 4310). Statistical analysis was performed using ANOVA and Tukey's test at the 5% level of significance. A significant reduction in the tensile bond strength of crowns cemented with zinc phosphate and submitted to thermal cycles was observed at 15 min (196.75 N versus 0 min = 452.01 N, 5 min = 444.23 N and 10 min = 470.85 N). Thermal cycling and ultrasonic instrumentation for 15 min caused a significant reduction in tensile bond strength (p < .05).en
dc.description.affiliationDepartment of Restorative Dentistry School of Dentistry of São José dos Campos São Paulo State University (UNESP), São José dos Campos, SP
dc.description.affiliationDepartment of Prosthodontics School of Dentistry University of São Paulo, São Paulo, SP
dc.description.affiliationDepartment of Periodontics School of Dentistry of São Jose dos Campos São Paulo Statte University (UNESP), São José dos Campos, SP
dc.description.affiliationDepartment of Periodontics School of Dentistry Vale do Paraíba University, São José dos Campos, SP
dc.description.affiliation, Av. Adhemar de Barros 283/701, São José dos Campos, SP 12245-010
dc.description.affiliationUnespDepartment of Restorative Dentistry School of Dentistry of São José dos Campos São Paulo State University (UNESP), São José dos Campos, SP
dc.description.affiliationUnespDepartment of Periodontics School of Dentistry of São Jose dos Campos São Paulo Statte University (UNESP), São José dos Campos, SP
dc.format.extent270-274
dc.identifierhttp://dx.doi.org/10.1590/S1806-83242008000300014
dc.identifier.citationBrazilian Oral Research, v. 22, n. 3, p. 270-274, 2008.
dc.identifier.doi10.1590/S1806-83242008000300014
dc.identifier.file2-s2.0-60649120799.pdf
dc.identifier.issn1806-8324
dc.identifier.issn1807-3107
dc.identifier.lattes5733639342016958
dc.identifier.scieloS1806-83242008000300014
dc.identifier.scopus2-s2.0-60649120799
dc.identifier.urihttp://hdl.handle.net/11449/70720
dc.language.isoeng
dc.relation.ispartofBrazilian Oral Research
dc.relation.ispartofjcr1.223
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectTensile strength
dc.subjectTooth crown
dc.subjectUltrasonic therapy
dc.subjectZinc phosphate cement
dc.subjectzinc phosphate
dc.subjectanalysis of variance
dc.subjectcementation
dc.subjectchemistry
dc.subjectdebridement
dc.subjectechography
dc.subjectendodontics
dc.subjecthuman
dc.subjectinstrumentation
dc.subjectmaterials testing
dc.subjectmethodology
dc.subjectsurface property
dc.subjecttensile strength
dc.subjecttime
dc.subjecttooth crown
dc.subjectultrasound therapy
dc.subjectAnalysis of Variance
dc.subjectCementation
dc.subjectDebridement
dc.subjectHumans
dc.subjectMaterials Testing
dc.subjectRoot Canal Therapy
dc.subjectSurface Properties
dc.subjectTensile Strength
dc.subjectTime Factors
dc.subjectTooth Crown
dc.subjectUltrasonic Therapy
dc.subjectZinc Phosphate Cement
dc.titleEffect of ultrasonic instrumentation on the bond strength of crowns cemented with zinc phosphate cement to natural teeth. An in vitro studyen
dc.typeArtigo
dcterms.licensehttp://www.scielo.br/revistas/bor/paboutj.htm
unesp.author.lattes5733639342016958
unesp.author.lattes3462975841163856[1]
unesp.author.orcid0000-0002-7794-2851[1]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Ciência e Tecnologia, São José dos Campospt

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Artigos - Odontologia Restauradora - ICT