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Comparison of Hero 642 and K3 rotary nickel-titanium files in curved canals of molars and a systematic review of the literature
The aim of the present study was to compare the root canal preparation ability of rotary nickel-titanium (NiTi) Hero 642 and K3 files in curved mandibular or maxillary molars. A total of 40 extracted mandibular molars with two separate mesial canals, an apical width of approximately size ≤15 and a r...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
D.A. Spandidos
2014
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4151710/ https://www.ncbi.nlm.nih.gov/pubmed/25187795 http://dx.doi.org/10.3892/etm.2014.1853 |
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author | CAI, HUA-XIONG CHENG, HUI-LING SONG, JIE-WEN CHEN, SU-YA |
author_facet | CAI, HUA-XIONG CHENG, HUI-LING SONG, JIE-WEN CHEN, SU-YA |
author_sort | CAI, HUA-XIONG |
collection | PubMed |
description | The aim of the present study was to compare the root canal preparation ability of rotary nickel-titanium (NiTi) Hero 642 and K3 files in curved mandibular or maxillary molars. A total of 40 extracted mandibular molars with two separate mesial canals, an apical width of approximately size ≤15 and a root canal curvature of 15–30° were randomly divided into two groups and instrumented using Hero 642 (n=20) or K3 files (n=20). Canal straightening, working length, transportation, cross-sectional area, minimum dentin thickness and the canal angle curvature degree were examined, and a systematic review of the literature was conducted. No statistically significant differences were observed between the two groups with regard to the mean degree of straightening, mean change in working length, mean transportation, amount of dentin removed or remaining minimum dentin thickness (P>0.05). The canal angle curvature decreased in the two groups postoperatively. The systematic review identified six studies, and overall the two files performed similarly in the majority of categories examined. Therefore, the rotary NiTi Hero 642 and K3 files demonstrated comparable shaping abilities and maintenance of working length. |
format | Online Article Text |
id | pubmed-4151710 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2014 |
publisher | D.A. Spandidos |
record_format | MEDLINE/PubMed |
spelling | pubmed-41517102014-09-03 Comparison of Hero 642 and K3 rotary nickel-titanium files in curved canals of molars and a systematic review of the literature CAI, HUA-XIONG CHENG, HUI-LING SONG, JIE-WEN CHEN, SU-YA Exp Ther Med Articles The aim of the present study was to compare the root canal preparation ability of rotary nickel-titanium (NiTi) Hero 642 and K3 files in curved mandibular or maxillary molars. A total of 40 extracted mandibular molars with two separate mesial canals, an apical width of approximately size ≤15 and a root canal curvature of 15–30° were randomly divided into two groups and instrumented using Hero 642 (n=20) or K3 files (n=20). Canal straightening, working length, transportation, cross-sectional area, minimum dentin thickness and the canal angle curvature degree were examined, and a systematic review of the literature was conducted. No statistically significant differences were observed between the two groups with regard to the mean degree of straightening, mean change in working length, mean transportation, amount of dentin removed or remaining minimum dentin thickness (P>0.05). The canal angle curvature decreased in the two groups postoperatively. The systematic review identified six studies, and overall the two files performed similarly in the majority of categories examined. Therefore, the rotary NiTi Hero 642 and K3 files demonstrated comparable shaping abilities and maintenance of working length. D.A. Spandidos 2014-10 2014-07-18 /pmc/articles/PMC4151710/ /pubmed/25187795 http://dx.doi.org/10.3892/etm.2014.1853 Text en Copyright © 2014, Spandidos Publications http://creativecommons.org/licenses/by/3.0 This is an open-access article licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License. The article may be redistributed, reproduced, and reused for non-commercial purposes, provided the original source is properly cited. |
spellingShingle | Articles CAI, HUA-XIONG CHENG, HUI-LING SONG, JIE-WEN CHEN, SU-YA Comparison of Hero 642 and K3 rotary nickel-titanium files in curved canals of molars and a systematic review of the literature |
title | Comparison of Hero 642 and K3 rotary nickel-titanium files in curved canals of molars and a systematic review of the literature |
title_full | Comparison of Hero 642 and K3 rotary nickel-titanium files in curved canals of molars and a systematic review of the literature |
title_fullStr | Comparison of Hero 642 and K3 rotary nickel-titanium files in curved canals of molars and a systematic review of the literature |
title_full_unstemmed | Comparison of Hero 642 and K3 rotary nickel-titanium files in curved canals of molars and a systematic review of the literature |
title_short | Comparison of Hero 642 and K3 rotary nickel-titanium files in curved canals of molars and a systematic review of the literature |
title_sort | comparison of hero 642 and k3 rotary nickel-titanium files in curved canals of molars and a systematic review of the literature |
topic | Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4151710/ https://www.ncbi.nlm.nih.gov/pubmed/25187795 http://dx.doi.org/10.3892/etm.2014.1853 |
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