Performance of race instrumentation system in curved root canals: a comprehensive analysis by three study methods

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dc.contributor.authorLeonardi, Denise Piotto
dc.contributor.authorSydney, Gilson Blitzkow
dc.contributor.authorTanomaru Filho, Mario [UNESP]
dc.contributor.authorBaratto-Filho, Flares
dc.contributor.authorBaratto, Samantha Schaffer Pugsley
dc.contributor.authorCerri, Paulo Sérgio [UNESP]
dc.contributor.institutionPositivo University
dc.contributor.institutionUniversidade Federal do Paraná (UFPR)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-27T11:30:11Z
dc.date.available2014-05-27T11:30:11Z
dc.date.issued2013-08-20
dc.description.abstractIn this study, curved maxillary molar root canals were instrumented with RaCe rotary system to evaluate: 1. the occurrence of canal transportation using a radiographic platform; 2. the action of the instruments on the dentin walls, centering ability and canal enlargement by analysis of digital images; and the percentage of regular dentin surfaces and debris within the canal by histological analysis. Ten mesiobuccal roots of extracted human maxillary molars were embedded in acrylic resin and sectioned at the middle and apical thirds. Root canal shaping was performed using the RaCe rotary system at 250 rpm and 1 Ncm torque. Each instrument set was used five times according to a crowndown technique in the following sequence: 40/0.10, 35/0.08, 25/0.06, 25/0.04, 25/0.02 (working length - WL), 30/0.02 (WL) and 35/0.02 (WL). Each instrument was inserted until resistance was felt and then pulled back, followed by brushing movements towards all canal walls. Each specimen was assessed by three study methods: radiographic platform, digitized image assessment and histological analysis. The radiographic platform showed lack of apical transportation. No statistically significant difference (Wilcoxon test, p>0.05) was found between the middle and apical thirds regarding instrument action on dentin walls, centering ability, area of root canal enlargement, percentage of regular dentin surfaces and debris within the root canal. It may be concluded that RaCe system is a suitable method for the preparation of curved root canals, regarding the maintenance of root canal original path, action on dentin walls, canal enlargement and removal of debris from the root canal lumen.en
dc.description.affiliationDepartment of Dentistry Positivo University, Curitiba, PR
dc.description.affiliationDepartment of Dentistry UFPR - Federal University of Paraná, Curitiba, PR
dc.description.affiliationDepartment of Dentistry Universidade Estadual Paulista (UNESP) UNESP, Araraquara, SP
dc.description.affiliationUnespDepartment of Dentistry Universidade Estadual Paulista (UNESP) UNESP, Araraquara, SP
dc.format.extent230-234
dc.identifierhttp://dx.doi.org/10.1590/0103-6440201301920
dc.identifier.citationBrazilian Dental Journal, v. 24, n. 3, p. 230-234, 2013.
dc.identifier.doi10.1590/0103-6440201301920
dc.identifier.file2-s2.0-84881505239.pdf
dc.identifier.issn0103-6440
dc.identifier.issn1806-4760
dc.identifier.lattes2665211298584751
dc.identifier.lattes3278495911207882
dc.identifier.orcid0000-0001-5756-5828
dc.identifier.scieloS0103-6440201301920
dc.identifier.scopus2-s2.0-84881505239
dc.identifier.urihttp://hdl.handle.net/11449/76296
dc.language.isoeng
dc.relation.ispartofBrazilian Dental Journal
dc.relation.ispartofsjr0,476
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectNickel-titanium
dc.subjectRoot canal preparation
dc.subjectRotary instruments
dc.titlePerformance of race instrumentation system in curved root canals: a comprehensive analysis by three study methodsen
dc.typeArtigo
dcterms.licensehttp://www.scielo.br/revistas/bdj/iaboutj.htm
unesp.author.lattes2665211298584751
unesp.author.lattes3278495911207882[6]
unesp.author.orcid0000-0001-5756-5828[6]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Odontologia, Araraquarapt

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Artigos - Odontologia Restauradora - FOAR
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