Microbial distribution in the root canal system after periapical lesion induction using different methods

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dc.contributor.authorTanomaru, Juliane Maria Guerreiro [UNESP]
dc.contributor.authorLeonardo, Mario Roberto [UNESP]
dc.contributor.authorTanomaru-Filho, Mário [UNESP]
dc.contributor.authorda Silva, Léa Assed Bezerra
dc.contributor.authorIto, Izabel Yoko
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.date.accessioned2014-05-27T11:23:44Z
dc.date.available2014-05-27T11:23:44Z
dc.date.issued2008-12-01
dc.description.abstractThe aim of this study was to evaluate the microbial distribution in the root canal system after periapical lesion induction in dogs' teeth using different methods. Fifty-two root canals were assigned to 4 groups (n=13). Groups I and II: root canals were exposed to the oral cavity for 180 days; groups III and IV: root canals were exposed for 7 days and then the coronal openings were sealed for 53 days. The root apices of groups I and III were perforated, while those of groups II and IV remained intact. After the experimental periods, the animals were euthanized and the anatomic pieces containing the roots were processed and stained with the Brown & Brenn method to assess the presence and distribution of microorganisms. The incidence of microorganisms at different sites of the roots and periapical lesions was analyzed statistically by the chi-square test at 5% significance level. All groups presented microorganisms in the entire root canal system. A larger number of microorganisms was observed on the root canal walls, apical delta and dentinal tubules (p<0.05), followed by cementum and cemental resorption areas. In spite of the different periods of exposure to the oral environment, the methods used for induction of periapical periodontitis yielded similar distribution of microorganisms in the root canal system.en
dc.description.affiliationDepartment of Restorative Dentistry Dental School of Araraquara São Paulo State University, Araraquara, SP
dc.description.affiliationDepartment of Pediatric Clinic, Preventive and Community Dentistry Dental School of Ribeirão Preto University of São Paulo, Ribeirão Preto, SP
dc.description.affiliationDepartment of Microbiology and Immunology School of Pharmaceutical Sciences of Ribeirão Preto University of São Paulo, Ribeirão Preto, SP
dc.description.affiliationUnespDepartment of Restorative Dentistry Dental School of Araraquara São Paulo State University, Araraquara, SP
dc.format.extent124-129
dc.identifierhttp://dx.doi.org/10.1590/S0103-64402008000200007
dc.identifier.citationBrazilian Dental Journal, v. 19, n. 2, p. 124-129, 2008.
dc.identifier.doi10.1590/S0103-64402008000200007
dc.identifier.file2-s2.0-61449320568.pdf
dc.identifier.issn0103-6440
dc.identifier.issn1806-4760
dc.identifier.scieloS0103-64402008000200007
dc.identifier.scopus2-s2.0-61449320568
dc.identifier.urihttp://hdl.handle.net/11449/70708
dc.language.isoeng
dc.relation.ispartofBrazilian Dental Journal
dc.relation.ispartofsjr0,476
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectEndodontics
dc.subjectMicroorganisms
dc.subjectPeriapical periodontitis
dc.subjectPulp cavity
dc.subjectPulp necrosis
dc.subjectcoloring agent
dc.subjectdiagnostic agent
dc.subjectanimal
dc.subjectbacterium
dc.subjectcementum
dc.subjectdentin
dc.subjectdog
dc.subjectendodontics
dc.subjectgrowth, development and aging
dc.subjectinstrumentation
dc.subjectmethodology
dc.subjectmicrobiology
dc.subjectmouth
dc.subjectpathology
dc.subjecttime
dc.subjecttooth disease
dc.subjecttooth periapical disease
dc.subjecttooth pulp
dc.subjecttooth root
dc.subjectultrastructure
dc.subjectAnimals
dc.subjectBacteria
dc.subjectColoring Agents
dc.subjectDental Cementum
dc.subjectDental Pulp Cavity
dc.subjectDentin
dc.subjectDogs
dc.subjectMouth
dc.subjectPeriapical Periodontitis
dc.subjectPulpectomy
dc.subjectRoot Canal Obturation
dc.subjectRoot Canal Preparation
dc.subjectRoot Resorption
dc.subjectTime Factors
dc.subjectTooth Apex
dc.titleMicrobial distribution in the root canal system after periapical lesion induction using different methodsen
dc.typeArtigo
dcterms.licensehttp://www.scielo.br/revistas/bdj/paboutj.htm
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Odontologia, Araraquarapt

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