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Working length changes in curved canals after coronal flaring by using rotary files and hand file: An in vitro study
AIM: This in vitro investigation examined the effect of early coronal flaring (CF) and late CF on the working length (WL) in curved root canals. BACKGROUND: The objective of this study was to determine if canal length is altered as a result of CF in curved canals of molar roots. STUDY DESIGN: The co...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Medknow Publications & Media Pvt Ltd
2013
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3778619/ https://www.ncbi.nlm.nih.gov/pubmed/24082566 http://dx.doi.org/10.4103/0972-0707.117489 |
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author | Kumar, Rahul Khambete, Neha Patil, Suvarna Hoshing, Upendra Medha, Ashish Shetty, Roshan |
author_facet | Kumar, Rahul Khambete, Neha Patil, Suvarna Hoshing, Upendra Medha, Ashish Shetty, Roshan |
author_sort | Kumar, Rahul |
collection | PubMed |
description | AIM: This in vitro investigation examined the effect of early coronal flaring (CF) and late CF on the working length (WL) in curved root canals. BACKGROUND: The objective of this study was to determine if canal length is altered as a result of CF in curved canals of molar roots. STUDY DESIGN: The conditions compared were combinations of (a) stainless steel hand files using Gates Glidden (G. G.) drills (SS) versus nickel-titanium rotary files (Ni-Ti); and (b) early CF (flaring completed before WL determination) versus late CF (flaring completed after WL determination). Selected were 90 canals of extracted maxillary or mandibular first molars (mesial root of mandibular molars and the mesiobuccal root of the maxillary molars) from three groups. CF was accomplished for the SS group using G. G. drills and for the Ni-Ti group using rotary ProTaper and Hero Shaper files. WL was determined by a digital vernier caliper before CF, immediately after CF, and again after canal preparation. STATISTICAL ANALYSIS: A repeated measures analysis of variance (ANOVA) test and a Tukey's multiple prosthoc test were used for this study. RESULTS: Results indicated that WL decreased for all canals as a result of canal preparation. The mean decrease in WL was significantly greater for the SS group (−0.77 ± 0.42 mm) than for the Ni-Ti groups (−0.33 mm ± 0.44). Less change in WL occurred in all groups when initial WL was determined after CF. CONCLUSION: WL in curved canals consistently decreases during the course of instrumentation. Clinician should keep this in mind for better treatment outcome. |
format | Online Article Text |
id | pubmed-3778619 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2013 |
publisher | Medknow Publications & Media Pvt Ltd |
record_format | MEDLINE/PubMed |
spelling | pubmed-37786192013-09-30 Working length changes in curved canals after coronal flaring by using rotary files and hand file: An in vitro study Kumar, Rahul Khambete, Neha Patil, Suvarna Hoshing, Upendra Medha, Ashish Shetty, Roshan J Conserv Dent Original Article AIM: This in vitro investigation examined the effect of early coronal flaring (CF) and late CF on the working length (WL) in curved root canals. BACKGROUND: The objective of this study was to determine if canal length is altered as a result of CF in curved canals of molar roots. STUDY DESIGN: The conditions compared were combinations of (a) stainless steel hand files using Gates Glidden (G. G.) drills (SS) versus nickel-titanium rotary files (Ni-Ti); and (b) early CF (flaring completed before WL determination) versus late CF (flaring completed after WL determination). Selected were 90 canals of extracted maxillary or mandibular first molars (mesial root of mandibular molars and the mesiobuccal root of the maxillary molars) from three groups. CF was accomplished for the SS group using G. G. drills and for the Ni-Ti group using rotary ProTaper and Hero Shaper files. WL was determined by a digital vernier caliper before CF, immediately after CF, and again after canal preparation. STATISTICAL ANALYSIS: A repeated measures analysis of variance (ANOVA) test and a Tukey's multiple prosthoc test were used for this study. RESULTS: Results indicated that WL decreased for all canals as a result of canal preparation. The mean decrease in WL was significantly greater for the SS group (−0.77 ± 0.42 mm) than for the Ni-Ti groups (−0.33 mm ± 0.44). Less change in WL occurred in all groups when initial WL was determined after CF. CONCLUSION: WL in curved canals consistently decreases during the course of instrumentation. Clinician should keep this in mind for better treatment outcome. Medknow Publications & Media Pvt Ltd 2013 /pmc/articles/PMC3778619/ /pubmed/24082566 http://dx.doi.org/10.4103/0972-0707.117489 Text en Copyright: © Journal of Conservative 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 Kumar, Rahul Khambete, Neha Patil, Suvarna Hoshing, Upendra Medha, Ashish Shetty, Roshan Working length changes in curved canals after coronal flaring by using rotary files and hand file: An in vitro study |
title | Working length changes in curved canals after coronal flaring by using rotary files and hand file: An in vitro study |
title_full | Working length changes in curved canals after coronal flaring by using rotary files and hand file: An in vitro study |
title_fullStr | Working length changes in curved canals after coronal flaring by using rotary files and hand file: An in vitro study |
title_full_unstemmed | Working length changes in curved canals after coronal flaring by using rotary files and hand file: An in vitro study |
title_short | Working length changes in curved canals after coronal flaring by using rotary files and hand file: An in vitro study |
title_sort | working length changes in curved canals after coronal flaring by using rotary files and hand file: an in vitro study |
topic | Original Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3778619/ https://www.ncbi.nlm.nih.gov/pubmed/24082566 http://dx.doi.org/10.4103/0972-0707.117489 |
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