The ability of three nickel–titanium mechanized systems to negotiate and shape MB2 canals in extracted maxillary first molars: a micro‐computed tomographic study
| Autor: | Murilo Priori Alcalde, Rodrigo Ricci Vivan, Jussaro Alves Duque, Vanessa A. S. Marques, Marco Antonio Hungaro Duarte, Ericson Janólio de Camargo, Marcus Vinícius Reis Só |
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| Rok vydání: | 2019 |
| Předmět: |
Molar
Root canal 0206 medical engineering Perforation (oil well) 02 engineering and technology Volume change Computed tomographic 03 medical and health sciences 0302 clinical medicine Nickel Germany medicine Alloys General Dentistry Mathematics Orthodontics Titanium Significant difference 030206 dentistry X-Ray Microtomography 020601 biomedical engineering TRATAMENTO DO CANAL RADICULAR medicine.anatomical_structure Mesiobuccal root Nickel titanium sense organs Dental Pulp Cavity Brazil Root Canal Preparation |
| Zdroj: | Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP |
| Popis: | AIM To evaluate the influence of three engine-driven NiTi file systems manufactured from different NiTi alloys for the preparation of second mesiobuccal (MB2) canals in extracted maxillary first molars using a micro-computed tomographic (micro-CT) scanner. METHODOLOGY Thirty maxillary molars with two canals in the mesiobuccal root were selected and randomly divided into three groups (n = 10): Reciproc [REC; size 25, .08 taper; VDW, Munich, Germany], ProDesign R [PDR; size 25, .06 taper; Easy, Belo Horizonte, Brazil] and Mtwo [MO; size 25, .06 taper; VDW, Munich, Germany]. Before and after root canal preparation of the MB2 canal, the teeth were scanned using a micro-CT to evaluate canal transportation, centring ability, dentine thickness and volume change. The working time to achieve working length was also evaluated. All parameters were compared statistically using the Kruskal-Wallis and Dunn test for multiple comparisons, with a significance level of 5%. RESULTS There was no significant difference amongst the groups regarding canal transportation and centring ability (P > 0.05). However, the PDR size 25, .06 taper group had significantly lower canal volume and volume of dentine removal compared with a MO size 25, .06 taper and REC size 25, .08 taper (P |
| Databáze: | OpenAIRE |
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