Micro–computed Tomographic Assessment and Comparative Study of the Shaping Ability of 6 Nickel-Titanium Files: An In Vitro Study
| Autor: | Juan Gonzalo Olivieri, Fernando Duran-Sindreu Terol, José A. Sánchez, Firas Elmsmari, Maria de las Nieves Perez Morales, Phil Salmon, David E. Jaramillo |
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| Rok vydání: | 2021 |
| Předmět: |
Titanium
0301 basic medicine Molar Orthodontics Structure model index Equipment Design X-Ray Microtomography 030206 dentistry Computed tomographic 03 medical and health sciences 030104 developmental biology 0302 clinical medicine Belgium Nickel Nickel titanium Research studies In vitro study Dental Pulp Cavity General Dentistry Root Canal Preparation Mathematics |
| Zdroj: | Journal of Endodontics. 47:812-819 |
| ISSN: | 0099-2399 |
| Popis: | Introduction This research studies and compares the shaping ability of WaveOne Gold (WG; Dentsply Tulsa Dental Specialties, Tulsa, OK), the Reciproc Blue (RB; VDW, Munich, Germany), TRUShape (TS, Dentsply Tulsa Dental Specialties), XP-endo Shaper (XP; FKG, La Chaux-de-Fonds, Switzerland), iRace (IR, FKG), and TruNatomy (TN; Dentsply Sirona, Ballaigues, Switzerland) in the preparation of moderately curved canals and using micro–computed tomographic technology. Methods Sixty lower molars with 2 mesial canals were randomly distributed into 6 groups of 10 molars and 20 canals per group (n = 20). Specimens were scanned before and after preparation using the SkyScan 1275 (Bruker microCT, Kontich, Belgium). Group 1 was treated with WG, group 2 with RB, group 3 with TS, group 4 with XP, group 5 with IR, and group 6 with TN. After instrumentation, researchers quantified the changes produced in the canal geometry in terms of surface, volume, structure thickness, surface convexity index, structure model index, percentage of surface touched, and centroids. Wilcoxon and analysis of variance tests were performed to compare the values before and after preparation and the differences between groups. The significance level was established at 5%. Results There were no significant differences between WG and RB (P > .05) and between TN and XP (P > .05). TN had significant differences with WG, RB, TS, and IR (P .05). Conclusions WG and RB and TN and XP had similar shaping effectivity. TS and WG touched the highest percentages of canal surfaces (81% and 73%, respectively) but produced the biggest changes in the canal anatomy. TN and XP better kept the canal anatomy, but TN touched the lowest percentage of canal surface (50%). All the files used were able to clean and to shape moderately curved canals with minimal apical transportation. |
| Databáze: | OpenAIRE |
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