Canal Transportation, Unprepared Areas, and Dentin Removal after Preparation with BT-RaCe and ProTaper Next Systems
| Autor: | Marília F. Marceliano-Alves, Flávio R.F. Alves, João Paulo Ferreira Grillo, Mariane F.L.S. Lacerda, Márcia L. Marques, José F. Siqueira, José C. Provenzano, Sabrina de Castro Brasil |
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| Rok vydání: | 2017 |
| Předmět: |
Molar
Dental Instruments Materials science Root canal 0206 medical engineering Tooth Fracture Dentistry Mandible 02 engineering and technology Width ratio Tooth Fractures 03 medical and health sciences 0302 clinical medicine stomatognathic system Nickel medicine Dentin Humans General Dentistry Titanium Orthodontics Dental Pulp Cavity business.industry Equipment Design X-Ray Microtomography 030206 dentistry 020601 biomedical engineering Dental instruments Root Canal Therapy medicine.anatomical_structure business Root Canal Preparation |
| Zdroj: | Journal of Endodontics. 43:1683-1687 |
| ISSN: | 0099-2399 |
| DOI: | 10.1016/j.joen.2017.04.012 |
| Popis: | Introduction This study compared the shaping ability of ProTaper Next (Dentsply Sirona, Tulsa, OK) and BT-RaCe (FKG Dentaire, La Chaux-de-Fonds, Switzerland) instrument systems in the mesial canals of mandibular molars using micro–computed tomographic (micro-CT) imaging. Methods A total of 17 type IV mesial roots of extracted first mandibular molars were scanned using micro-CT imaging before and after root canal preparation with the 2 instrument systems. Both systems were used in the same root but alternating the mesial canals from root to root. The following parameters were analyzed: root canal volume, surface area, unprepared surface areas, transportation, canal/root width ratio, and preparation time. Results There were no statistically significant differences between the 2 systems for all evaluated parameters (P > .05). The unprepared surface areas for the full canal length and the apical 5-mm segment were 33% and 14% for BT-RaCe and 31% and 14% for ProTaper Next, respectively. After preparation, all root canals had a diameter that was not larger than 35% of the root diameter at the coronal and middle segments. Conclusions The 2 systems showed no differences in any of the evaluated shaping parameters. None of the tested systems put the roots at risk of fracture because of excessive dentin removal. |
| Databáze: | OpenAIRE |
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