Rotary Mtwo system versus manual K-file instruments: Efficacy in preparing primary and permanent molar root canals
| Autor: | Maziar Mokhtare, Mohammad Reza Azar |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2011 |
| Předmět: |
Molar
Time Factors Rotation Root canal Dentistry permanent teeth Nickel-titanium root canal preparation Tooth Apex stomatognathic system Nickel Materials Testing Stereo microscope Humans Medicine Statistical analysis Tooth Deciduous Coloring Agents General Dentistry Permanent teeth Titanium Orthodontics Dental Pulp Cavity business.industry Equipment Design General Medicine India ink Carbon lcsh:RK1-715 medicine.anatomical_structure Torque primary teeth lcsh:Dentistry Equipment Failure business Dental Alloys |
| Zdroj: | Indian Journal of Dental Research, Vol 22, Iss 2, Pp 363-363 (2011) |
| ISSN: | 1998-3603 0970-9290 |
| Popis: | Aim: To compare the cleaning ability and preparation time of rotary instruments (Mtwo) and conventional manual instruments (K-file) in preparing primary and permanent molar root canals. Materials and Methods: Access cavities were prepared in 70 primary and 70 permanent teeth and India ink was injected into 120 canals of selected molars. The teeth were randomly divided into two main subgroups (n=20) and three control groups (n=10). In each of these main subgroups, either the manual instrument (K-file) or the rotary system (Mtwo) was used to prepare root canals. After cleaning the canals and clearing the teeth, dye removal was evaluated with the help of a stereomicroscope. In addition, the time needed for root canal preparation was recorded by a chronometer. Statistical Analysis: Statistical analyses were done using the Kruskal-Wallis, Mann-Whitney and t tests. Results: With regard to the cleaning ability of root canals, there were no significant differences between the K-file and Mtwo rotary system in primary and permanent teeth in the apical, middle or coronal third of the canals. Moreover, there were no significant differences between primary and permanent teeth prepared with K-files and rotary instruments. In all the groups, shorter times were recorded with the rotary technique. The working time was shorter in primary than in permanent teeth. Conclusion: The Mtwo rotary system showed acceptable cleaning ability in both primary and permanent teeth, and achieved results similar to those of K-files in less time. |
| Databáze: | OpenAIRE |
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