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Evaluation of surface preparation and maintenance of canal curvature following instrumentation with hand ‘K’ file and three different Ni-Ti rotary systems: A radiographic and SEM study
AIM: To determine the shaping ability and cleaning efficiency of hand K-flexofiles, ProTaper, LightSpeed and Mtwo instruments during the preparation of curved root canals in extracted human teeth. MATERIALS AND METHODS: A total of 120 root canals of mandibular and maxillary molars with curvature mor...
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Medknow Publications Pvt Ltd
2010
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3220093/ https://www.ncbi.nlm.nih.gov/pubmed/22114390 http://dx.doi.org/10.4103/0976-237X.68599 |
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author | Bhatti, Namrata Sroa, Renu Sikri, Vimal K. |
author_facet | Bhatti, Namrata Sroa, Renu Sikri, Vimal K. |
author_sort | Bhatti, Namrata |
collection | PubMed |
description | AIM: To determine the shaping ability and cleaning efficiency of hand K-flexofiles, ProTaper, LightSpeed and Mtwo instruments during the preparation of curved root canals in extracted human teeth. MATERIALS AND METHODS: A total of 120 root canals of mandibular and maxillary molars with curvature more than 20° were divided into four groups of 30 each. In group A, canals were prepared using hand K-flexofiles following the crown down technique. In group B LightSpeed, in group C ProTaper, and in group D Mtwo rotary instruments were used to prepare the root canals. Using pre- and post-instrumentation radiographs, straightening of the canal curvature was determined with Corel Draw 9.0 software tools. The amount of debris and smear layer were quantified at three different areas (coronal, middle, and apical thirds) of root canal using SEM. The collected data were analyzed statistically using Student's paired ‘t’ test. RESULTS: The mean change in curvature for hand K-files was 7.71°, for ProTaper files 6.03°, for Mtwo 5.43°, and for LightSpeed instruments were found to be 4.57°. The percentage change in the curvature for all the four groups was statistically highly significant (P< 0.01). LightSpeed instruments maintained the original canal curvature significantly (P< 0.01) better than the other instruments. For leftover debris, the minimum percentage was found to be associated with ProTaper (65.48%) followed by Mtwo (66.22%), LightSpeed (71.67%) and the maximum with hand K-files (74.16%). However, the difference in mean leftover debris between ProTaper and Mtwo was not significant. CONCLUSION: ProTaper and Mtwo resulted in good cleaning, and LightSpeed maintained the original canal curvature better than the ProTaper, Mtwo, or Hand K-files. |
format | Online Article Text |
id | pubmed-3220093 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2010 |
publisher | Medknow Publications Pvt Ltd |
record_format | MEDLINE/PubMed |
spelling | pubmed-32200932011-11-23 Evaluation of surface preparation and maintenance of canal curvature following instrumentation with hand ‘K’ file and three different Ni-Ti rotary systems: A radiographic and SEM study Bhatti, Namrata Sroa, Renu Sikri, Vimal K. Contemp Clin Dent Original Article AIM: To determine the shaping ability and cleaning efficiency of hand K-flexofiles, ProTaper, LightSpeed and Mtwo instruments during the preparation of curved root canals in extracted human teeth. MATERIALS AND METHODS: A total of 120 root canals of mandibular and maxillary molars with curvature more than 20° were divided into four groups of 30 each. In group A, canals were prepared using hand K-flexofiles following the crown down technique. In group B LightSpeed, in group C ProTaper, and in group D Mtwo rotary instruments were used to prepare the root canals. Using pre- and post-instrumentation radiographs, straightening of the canal curvature was determined with Corel Draw 9.0 software tools. The amount of debris and smear layer were quantified at three different areas (coronal, middle, and apical thirds) of root canal using SEM. The collected data were analyzed statistically using Student's paired ‘t’ test. RESULTS: The mean change in curvature for hand K-files was 7.71°, for ProTaper files 6.03°, for Mtwo 5.43°, and for LightSpeed instruments were found to be 4.57°. The percentage change in the curvature for all the four groups was statistically highly significant (P< 0.01). LightSpeed instruments maintained the original canal curvature significantly (P< 0.01) better than the other instruments. For leftover debris, the minimum percentage was found to be associated with ProTaper (65.48%) followed by Mtwo (66.22%), LightSpeed (71.67%) and the maximum with hand K-files (74.16%). However, the difference in mean leftover debris between ProTaper and Mtwo was not significant. CONCLUSION: ProTaper and Mtwo resulted in good cleaning, and LightSpeed maintained the original canal curvature better than the ProTaper, Mtwo, or Hand K-files. Medknow Publications Pvt Ltd 2010 /pmc/articles/PMC3220093/ /pubmed/22114390 http://dx.doi.org/10.4103/0976-237X.68599 Text en Copyright: © Contemporary Clinical Dentistry http://creativecommons.org/licenses/by-nc-sa/3.0 This is an open-access article distributed under the terms of the Creative Commons Attribution-Noncommercial-Share Alike 3.0 Unported, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Original Article Bhatti, Namrata Sroa, Renu Sikri, Vimal K. Evaluation of surface preparation and maintenance of canal curvature following instrumentation with hand ‘K’ file and three different Ni-Ti rotary systems: A radiographic and SEM study |
title | Evaluation of surface preparation and maintenance of canal curvature following instrumentation with hand ‘K’ file and three different Ni-Ti rotary systems: A radiographic and SEM study |
title_full | Evaluation of surface preparation and maintenance of canal curvature following instrumentation with hand ‘K’ file and three different Ni-Ti rotary systems: A radiographic and SEM study |
title_fullStr | Evaluation of surface preparation and maintenance of canal curvature following instrumentation with hand ‘K’ file and three different Ni-Ti rotary systems: A radiographic and SEM study |
title_full_unstemmed | Evaluation of surface preparation and maintenance of canal curvature following instrumentation with hand ‘K’ file and three different Ni-Ti rotary systems: A radiographic and SEM study |
title_short | Evaluation of surface preparation and maintenance of canal curvature following instrumentation with hand ‘K’ file and three different Ni-Ti rotary systems: A radiographic and SEM study |
title_sort | evaluation of surface preparation and maintenance of canal curvature following instrumentation with hand ‘k’ file and three different ni-ti rotary systems: a radiographic and sem study |
topic | Original Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3220093/ https://www.ncbi.nlm.nih.gov/pubmed/22114390 http://dx.doi.org/10.4103/0976-237X.68599 |
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