Comparison of Dentinal Crack Formation With Reciproc, Mtwo and ProTaper Root Canal Preparation Systems
| Autor: | Mohammad Adeli, Amir Ali Karamifar, Mohadeseh Hashemzehi, Ehsan Hamzelouei Moghadam, Kiumars Nazari Moghaddam, Mohammad Sadegh Nazari, Seyed Lotfoallah Derakhshan |
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| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
0301 basic medicine
Molar Materials science business.industry Root Canal Preparations Root canal Rehabilitation lcsh:RM1-950 Dentistry Tooth Fracture Physical Therapy Sports Therapy and Rehabilitation 030206 dentistry Apex (geometry) 03 medical and health sciences 030104 developmental biology 0302 clinical medicine medicine.anatomical_structure lcsh:Therapeutics. Pharmacology stomatognathic system Stereo microscope medicine Periodontal fiber business |
| Zdroj: | Middle East Journal of Rehabilitation and Health, Vol 3, Iss 3 (2016) |
| ISSN: | 2423-4451 |
| Popis: | Background Instrumentation with rotary instruments could potentially cause dentinal cracks possibly leading to tooth fracture. Reciproc files require a single file to finalize the root canal preparation and the effect of this procedure has not been compared with other systems. Objectives The aim of this study was to compare the incidence of dentinal micro-cracks following root canal preparations with ProTaper, Mtwo and Reciproc files. Materials and Methods In an experimental in vitro trial, 80 maxillary and mandibular first molars were selected and their crowns and distal roots were cut. The roots were then examined to remove any previous cracks and defects. An impression polyether material was used to simulate teeth periodontal ligament (PDL). The teeth were divided to four experimental groups (n = 20) and prepared using Reciproc, Mtwo and ProTaper or remained unprepared as a control group. The specimens were then sectioned horizontally on 3, 5 and 9 mm from the apex and number of micro-cracks was determined by stereomicroscope. The incidence of dentinal cracks on different systems or sections were statistically analyzed by means of the chi-square test. Results Dentinal defects on 3-mm, 5-mm and 9-mm sections from the apex were noted in 10 (5.6%); 7 (3.9%) and 9 (5.0%) samples of all, respectively. Following canal preparation using Reciproc, ProTaper and Mtwo systems, the defects were observed in 7 (3.9%), 12 (6.7%) and 7 (3.9%) the sections, respectively. No significant differences were observed regarding the defect incidence on the studied instrumentation files or sections. Conclusions Regarding the study limitations, dentinal cracks were observed in all files and distances from the apex. Although there was more crack incidence in ProTaper files, no significant differences were noted regarding the studied systems and sections from the apex. |
| Databáze: | OpenAIRE |
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