Rotary Nickel-Titanium GT and ProTaper Files for Root Canal Shaping by Novice Operators: A Radiographic and Micro–Computed Tomography Evaluation
| Autor: | Ove A. Peters, Diana Gekelman, Sahar Mirfarsi, Ramya Ramamurthy, Frank Paqué |
|---|---|
| Přispěvatelé: | University of Zurich, Gekelman, D |
| Rok vydání: | 2009 |
| Předmět: |
Molar
medicine.medical_specialty Time Factors Rotation Root canal Radiography Pulpectomy Students Dental Dentistry 610 Medicine & health Endodontics Imaging Three-Dimensional Tooth Apex Nickel 10066 Clinic of Conservative and Preventive Dentistry Image Processing Computer-Assisted otorhinolaryngologic diseases medicine Humans Single-Blind Method Education Dental General Dentistry Titanium Dental Pulp Cavity Orthodontics Anatomy Cross-Sectional business.industry Teaching Micro computed tomography Equipment Design X-Ray Microtomography 3500 General Dentistry medicine.anatomical_structure Nickel titanium Coronal plane sense organs business Root Canal Preparation Software Dental Alloys |
| Zdroj: | Journal of Endodontics. 35:1584-1588 |
| ISSN: | 0099-2399 |
| DOI: | 10.1016/j.joen.2009.07.018 |
| Popis: | INTRODUCTION: The purpose of this study was to assess canal preparation outcomes in vitro by novice clinicians after standardized teaching sessions. METHODS: All students received a training session. In experiment 1, twenty canals of mandibular molars were prepared with GT and ProTaper rotaries by 10 students. Standardized radiographs were exposed before and after canal preparation, and canal curvature was measured; canals were assessed for patency and preparation time. In experiment 2, mandibular molars (20 canals) were submitted to microcomputed tomography before and after canal preparation with ProTaper and GT rotaries by 2 dental students. Canals were metrically assessed for changes (volume, surface, cross-sectional shape, transportation) during canal preparation by using software. RESULTS: In experiment 1, canal curvature decreased by 7.6 degrees and 7.8 degrees for GT and ProTaper preparations; there were no broken instruments, and 2 canals lost patency. The time for GT preparation was longer than for ProTaper (29.7 +/- 6.8 vs 19.4 +/- 8.1 minutes, P |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|