Influence of reciprocating movement angulation and additional cleaning methods on the removal of filling material in retreatment of premolars with oval canals.
Introduction: The aim of this study is to evaluate the debridement of oval, single-rooted teeth with Mtwo files at different reciprocal angles and to analyze different additional cleaning methods in the removal of obturation material using micro-computed tomography. Methods: Sixty mandibular premola...
| Publicado en: | Dental Press Endodontics Vol. 14; no. 1; pp. 154 - 194 |
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| Autores principales: | , , , , , |
| Formato: | Artículo |
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Dental Press International
Jan-Apr2024
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=lth&AN=177805322&site=ehost-live header: @attributes: shortDbName: lth uiTerm: 177805322 longDbName: MedicLatina uiTag: AN controlInfo: bkinfo: jinfo: jid: 21783713 FQCM jtl: Dental Press Endodontics issn: 21783713 maglogo: N pubinfo: dt: Jan-Apr2024 vid: 14 iid: 1 pid: 30233 pub: Dental Press International artinfo: ui: 177805322 10.14436/2358-2545.14.1.154-173.oar ppf: 154 ppct: 40 formats: fmt: @attributes: type: P size: 4.3MB tig: atl: Influence of reciprocating movement angulation and additional cleaning methods on the removal of filling material in retreatment of premolars with oval canals. aug: au: Perraro MARTINS, Milena TARTARI, Talita Monteiro BRAMANTE, Clovis Bombarda de ANDRADE, Flaviana Ricci VIVAN, Rodrigo Hungaro DUARTE, Marco Antonio affil: Universidade de São Paulo, Faculdade de Odontologia de Bauru, Departamento de Endodontia (Bauru/SP, Brazil). su: Filler materials Bicuspids Cleaning sug: subj: Filler materials Bicuspids Cleaning keyword: Endodontics Retreatment Ultrasonics Endodontia Retratamento Ultrassom ab: Introduction: The aim of this study is to evaluate the debridement of oval, single-rooted teeth with Mtwo files at different reciprocal angles and to analyze different additional cleaning methods in the removal of obturation material using micro-computed tomography. Methods: Sixty mandibular premolars with a single oval and circular canal were instrumented and obturated with the ProTaper Universal System up to file F3. All teeth were subjected to a micro-CT scan. The samples were categorized into 4 groups based on the reciprocal angle and the additional cleaning method used for gutta-percha removal: Mtwo 150/30 group with NitiSonic insert, Mtwo 150/30 group with XP-endo finisher, Mtwo 90/30 group with NitiSonic insert and Mtwo 90/30 group with XP-endo finisher. After debridement and additional cleaning in the individual groups, micro-CT scans were performed. Wilcoxon, Kruskal-Wallis and Dunn tests, Welch's t-test and Mann-Whitney test were used. Results: The use of MTwo files in reciprocating motion at all angles significantly (p < 0.05) reduced the volume of gutta-percha in all thirds of the root canal during endodontic retreatment. Conclusion: The MTwo system in reciprocating motion allows a good and fast debridement capacity at low extrusion volume, with the 150º/30º angle showing greater fracture safety. The use of additional methods such as XP Endo Finisher R or ultrasonic agitation with NiTi inserts favored the effective cleaning of oval canals. Objetivo: Este estudo teve como objetivos avaliar, usando microtomografia computadorizada (micro-CT), a desobturação dos canais em dentes unirradiculares com formato oval, utilizando as limas Mtwo com diferentes angulações do movimento reciprocante, e analisar diferentes métodos de limpeza adicionais para remoção de material obturador. Métodos: Sessenta pré-molares inferiores com um único canal com formato oval foram instrumentados com o sistema ProTaper Universal até a lima F3 e obturados. Todos os dentes foram escaneados com micro-CT. As amostras foram divididas em quatro grupos, de acordo com a angulação do movimento reciprocante e o método de limpeza adicional usado para remoção de guta-percha: grupo Mtwo 150/30 e inserto NiTiSonic; grupo Mtwo 150/30 e XP-Endo Finisher; grupo Mtwo 90/30 e inserto NiTiSonic; e grupo Mtwo 90/30 e XP-Endo Finisher. Após a desobturação e limpeza adicional, de acordo com cada grupo, foram feitos os escaneamentos com micro-CT. Foram usados os testes de Wilcoxon, Kruskal-Wallis e Dunn, teste t de Welch e Mann-Whitney. Resultados: A utilização da lima Mtwo em movimento reciprocante em todas as angulações reduziu significativamente (p<0,05) o volume de guta-percha em todos os terços do canal radicular duranteo retratamento endodôntico. Conclusão: O sistema Mtwo em movimento reciprocante favorece boa e rápida capacidade de desobturação, com baixo volume de extrusão, sendo que na angulação 150º/30º apresentou maior segurança em termos de fratura, e o emprego de métodos adicionais usando XP Endo Finisher R ou agitação ultrassônica com insertos de NiTi favoreceu efetiva limpeza de canais com formato oval. pubtype: Academic Journal doctype: Article src: R language: Multiple languages refInfo: copyright: @attributes: flag: Y custom: Copyright of Dental Press Endodontics is the property of Dental Press International and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. item: Dental Press Endodontics holder: Dental Press International dt: @attributes: year: 2024 holdings: @attributes: islocal: N |
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