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An Ex-Vivo Study on the Shaping Parameters of Two Nickel-Titanium Rotary Systems Compared with Hand Instruments
INTRODUCTION: Rotary nickel-titanium (NiTi) instruments are thought to allow shaping of narrow, curved root canals more efficiently and more effectively than stainless steel hand instruments. However, the continued search for even more effective and safer instruments has resulted in new rotary syst...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Iranian Center for Endodontic Research
2011
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4000681/ https://www.ncbi.nlm.nih.gov/pubmed/24778687 |
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author | Ehsani, Maryam Zahedpasha, Samir Moghadamnia, Ali Akbar Mirjani, Jaber |
author_facet | Ehsani, Maryam Zahedpasha, Samir Moghadamnia, Ali Akbar Mirjani, Jaber |
author_sort | Ehsani, Maryam |
collection | PubMed |
description | INTRODUCTION: Rotary nickel-titanium (NiTi) instruments are thought to allow shaping of narrow, curved root canals more efficiently and more effectively than stainless steel hand instruments. However, the continued search for even more effective and safer instruments has resulted in new rotary systems being introduced on a regular basis. The aim of this study was to compare shaping parameters of RaCe and Mtwo NiTi rotary files with stainless steel K-Flexofile hand instrument. MATERIALS AND METHODS: A total of 60 mandibular first molars with 20-40 degree of curvature in mesial root were divided in to three groups and each was prepared with one kind of instrument (RaCe, Mtwo, stainless steel K-Flexofile). Using pre and post-radiographs, canal curvature was measured, with the Schneider technique. Preparation time was recorded. For evaluating canal centering and transportation, the tooth was sectioned 3, 6 and 9 mm from the apex. Pre and post- preparation photographs were taken from mesiolingual canal. Data was statistically analyzed using One-way ANOVA and Chi-Square tests. RESULTS: RaCe and Mtwo maintained canal curvature better than K-Flexofile (P<0.001). Mtwo prepared the canal in a shorter time (P<0.001). CONCLUSION: Significant statistical difference was not found in the three canal sections between the various systems. RaCe resulted in significantly fewer canal aberrations and better centering ability. |
format | Online Article Text |
id | pubmed-4000681 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2011 |
publisher | Iranian Center for Endodontic Research |
record_format | MEDLINE/PubMed |
spelling | pubmed-40006812014-04-28 An Ex-Vivo Study on the Shaping Parameters of Two Nickel-Titanium Rotary Systems Compared with Hand Instruments Ehsani, Maryam Zahedpasha, Samir Moghadamnia, Ali Akbar Mirjani, Jaber Iran Endod J Original Article INTRODUCTION: Rotary nickel-titanium (NiTi) instruments are thought to allow shaping of narrow, curved root canals more efficiently and more effectively than stainless steel hand instruments. However, the continued search for even more effective and safer instruments has resulted in new rotary systems being introduced on a regular basis. The aim of this study was to compare shaping parameters of RaCe and Mtwo NiTi rotary files with stainless steel K-Flexofile hand instrument. MATERIALS AND METHODS: A total of 60 mandibular first molars with 20-40 degree of curvature in mesial root were divided in to three groups and each was prepared with one kind of instrument (RaCe, Mtwo, stainless steel K-Flexofile). Using pre and post-radiographs, canal curvature was measured, with the Schneider technique. Preparation time was recorded. For evaluating canal centering and transportation, the tooth was sectioned 3, 6 and 9 mm from the apex. Pre and post- preparation photographs were taken from mesiolingual canal. Data was statistically analyzed using One-way ANOVA and Chi-Square tests. RESULTS: RaCe and Mtwo maintained canal curvature better than K-Flexofile (P<0.001). Mtwo prepared the canal in a shorter time (P<0.001). CONCLUSION: Significant statistical difference was not found in the three canal sections between the various systems. RaCe resulted in significantly fewer canal aberrations and better centering ability. Iranian Center for Endodontic Research 2011 2011-05-15 /pmc/articles/PMC4000681/ /pubmed/24778687 Text en © 2011, Iranian Center for Endodontic Research This is an Open Access article distributed under the terms of the Creative Commons Attribution License, (http://creativecommons.org/licenses/by/3.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Original Article Ehsani, Maryam Zahedpasha, Samir Moghadamnia, Ali Akbar Mirjani, Jaber An Ex-Vivo Study on the Shaping Parameters of Two Nickel-Titanium Rotary Systems Compared with Hand Instruments |
title | An Ex-Vivo Study on the Shaping Parameters of Two Nickel-Titanium Rotary Systems Compared with Hand Instruments |
title_full | An Ex-Vivo Study on the Shaping Parameters of Two Nickel-Titanium Rotary Systems Compared with Hand Instruments |
title_fullStr | An Ex-Vivo Study on the Shaping Parameters of Two Nickel-Titanium Rotary Systems Compared with Hand Instruments |
title_full_unstemmed | An Ex-Vivo Study on the Shaping Parameters of Two Nickel-Titanium Rotary Systems Compared with Hand Instruments |
title_short | An Ex-Vivo Study on the Shaping Parameters of Two Nickel-Titanium Rotary Systems Compared with Hand Instruments |
title_sort | ex-vivo study on the shaping parameters of two nickel-titanium rotary systems compared with hand instruments |
topic | Original Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4000681/ https://www.ncbi.nlm.nih.gov/pubmed/24778687 |
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