Microtomographic Evaluation of Canal Centralization and Dentine Removal after Canal Preparation with Two Rotary Systems: HyFlex EDM and ProTaper Next.
| Autor: | Ronquete V; Department of Endodontics and Dental Research, Iguaçu University, Nova Iguaçu, Brazil., Martin AS; Department of Endodontics, São Leopoldo Mandic University, Campinas, Brazil., Zuim K; Department of Endodontics, São Leopoldo Mandic University, Campinas, Brazil., Coutinho TMC; Department of Endodontics and Dental Research, Iguaçu University, Nova Iguaçu, Brazil., Marceliano EFV; Dental Clinic Department, Brazilian Army General Hospital of Belem, Belem, Brazil., Goulart PADSR; Department of Endodontics and Dental Research, Iguaçu University, Nova Iguaçu, Brazil., Lopes RT; Laboratory for Nuclear Instrumentation, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil., Silveira Bueno CED; Department of Endodontics, São Leopoldo Mandic University, Campinas, Brazil., Marceliano-Alves MFV; Department of Endodontics and Dental Research, Iguaçu University, Nova Iguaçu, Brazil. |
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| Jazyk: | angličtina |
| Zdroj: | European journal of dentistry [Eur J Dent] 2022 Jul; Vol. 16 (3), pp. 663-668. Date of Electronic Publication: 2022 Jan 11. |
| DOI: | 10.1055/s-0041-1739440 |
| Abstrakt: | Objective: This study compared the ProTaper Next (PTN; Dentsply Sirona, Tulsa, Oklahoma, United States) and HyFlex EDM (HEDM; Coltene/Whaledent AG, Alstätten, Switzerland) systems using micro-computed tomography (CT). Materials and Methods: Twenty-one mesial roots classified as Vertucci's type IV from extracted mandibular first molars with curvatures between 20 and 40 degrees were selected. The teeth were scanned using a micro-CT before and after root canal preparation by both systems, applied to the same root, in alternating canals. The following parameters were analyzed: canal centering, apical transportation, root canal diameter/root diameter. Results: No statistically significant differences between both systems were observed for any of the assessed morphological parameters ( p > 0.05). All canals presented diameter enlargement of more than 40% in relation to root diameter in the cervical and middle segments. No statistically significant difference was noted between the HEDM and PTN groups. The wear percentage for the HEDM group in the cervical and middle thirds were 49.66 ± 8.65 and 46.48 ± 14.29, respectively, and 51.02 ± 11.81 and 45.48 ± 10.79 for the PTN group, respectively. Conclusion: Both systems displayed similar mandibular molar mesial canals preparation, with no differences noted for any of the assessed parameters. Both groups showed increased canal diameter in the cervical and middle thirds by more than 40%. Competing Interests: None declared. (The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution License, permitting unrestricted use, distribution, and reproduction so long as the original work is properly cited. (https://creativecommons.org/licenses/by/4.0/).) |
| Databáze: | MEDLINE |
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