| Effect of Lateral Pressure Motion on the Torsional Behavior of Rotary ProTaper Universal Instruments. | |
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MedLine Citation:
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PMID: 21763906 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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INTRODUCTION: The purpose of this study was to evaluate the torsional behavior of rotary ProTaper Universal instruments after multiple clinical uses with and without lateral pressure motion. METHODS: Thirty sets of ProTaper Universal instruments were divided into 3 groups (n = 10): control group (CG) involving new instruments tested in torsion on the basis of ISO 3630-1, lateral pressure (LP) group involving instruments that were clinically used on 5 molars by using the shaping instruments S1 and S2 with lateral pressure motion, and no lateral pressure (NLP) group involving instruments that were clinically used on 5 molars without lateral pressure motion. The instruments in the LP and NLP groups were subsequently tested in torsion. Data were analyzed by using analysis of variance (α = 0.05). RESULTS: Multiple clinical uses caused a reduction in the maximum torque in the analyzed instruments. When the effect of using lateral pressure motion with the shaping instruments was assessed, a tendency of reduction in the maximum torque for the S1 and S2 instruments and of increase for the F1 and F2 instruments was observed in the group with lateral pressure motion. CONCLUSIONS: The use of lateral pressure motion with the shaping instruments S1 and S2 tended to produce smaller decreases in the torsional resistance of the finishing instruments F1 and F2. |
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Authors:
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Evandro Pires Vieira; Vicente Tadeu Lopes Buono; Maria Guiomar de Azevedo Bahia |
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Publication Detail:
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Type: Journal Article Date: 2011-06-25 |
Journal Detail:
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Title: Journal of endodontics Volume: 37 ISSN: 1878-3554 ISO Abbreviation: J Endod Publication Date: 2011 Aug |
Date Detail:
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Created Date: 2011-07-18 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7511484 Medline TA: J Endod Country: United States |
Other Details:
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Languages: eng Pagination: 1124-7 Citation Subset: D |
Copyright Information:
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Copyright © 2011 American Association of Endodontists. Published by Elsevier Inc. All rights reserved. |
Affiliation:
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Department of Restorative Dentistry, Faculty of Dentistry, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Minas Gerais, Brazil. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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