Cone-beam computed tomographic analysis: Comparison of the efficacy of two rotary retreatment systems for removal of filling material from primary teeth obturated with contemporary endodontic sealers

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Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.creatorMoreira, Camila Said-
Autor(es): dc.creatorMartinho, Frederico Canato-
Autor(es): dc.creatorCoelho, Marcella Pavanello Batista-
Autor(es): dc.creatorCoutinho Júnior, Luis Roberto Manhães-
Autor(es): dc.creatorda Silva, Eduardo Galera-
Autor(es): dc.creatorTorres, Carlos Rocha Gomes-
Autor(es): dc.creatorGomes, Ana Paula Martins-
Data de aceite: dc.date.accessioned2025-08-21T21:38:56Z-
Data de disponibilização: dc.date.available2025-08-21T21:38:56Z-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2015-07-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.5005/jp-journals-10015-1328-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/231363-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/231363-
Descrição: dc.descriptionIntroduction: This study has used cone-beam computed tomography (CBCT) to evaluate the efficacy of two different nickel titanium (NiTi) rotary retreatment systems for removal of filling material from teeth obturated with contemporary endodontic sealers. The operative time required for removal of root filling materials was also evaluated. Methods: Sixty root canals were randomly divided into three groups according to the sealer used for obturation: AH Plus Jet, mineral trioxide aggregate (MTA) Fillapex, and RoekoSeal Automix (RSA) (all, n = 20). After obturation, each group was subdivided into two subgroups according to the NiTi retreatment rotary system: Mtwo retreatment (Mtwo-R) file subgroup and ProTaper-UR subgroup–both instrumented with Mtwo-R files. Teeth were scanned with a microcomputed tomography before and after obturation. Results: Residual filling material was observed in 100% of the specimens after retreatment. No difference was found between Mtwo-R and ProTaper-UR systems (p > 0.05). The RSA was more effectively removed from dentin walls than AH Plus Jet (p < 0.05), with no difference to MTA Fillapex (p > 0.05). Thus, teeth obturated with RSA required less operative time to be retreated (both, p<0.05). Conclusion: ProTaper-UR and Mtwo-R systems were effective in removing the filling materials after instrumentation, but they could not eliminate them completely. Moreover, teeth obturated with silicone-based sealer RSA showed less residual filling material in dentin walls compared to the epoxy resin-based sealer (AH Plus Jet), which exhibited no difference compared to the salicylate resin-based sealer (MTA Fillapex). Teeth obturated with silicon-based sealer also required less operative time to be retreated despite the NiTi rotary retreatment system tested.-
Descrição: dc.descriptionDepartment of Restorative Dentistry Endodontic Division São José dos Campos Dental School State University of São Paulo-
Descrição: dc.descriptionDepartment of Restorative Dentistry Operative Dentistry Division São José dos Campos Dental School State University of São Paulo-
Formato: dc.format129-137-
Idioma: dc.languageen-
Relação: dc.relationWorld Journal of Dentistry-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectNiTi retreatment system-
Palavras-chave: dc.subjectRetreatment-
Palavras-chave: dc.subjectRoot canal-
Palavras-chave: dc.subjectSealer-
Título: dc.titleCone-beam computed tomographic analysis: Comparison of the efficacy of two rotary retreatment systems for removal of filling material from primary teeth obturated with contemporary endodontic sealers-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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