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Evaluation of the effect of maleic acid and ethylenediaminetetraacetic Acid on the microhardness and surface roughness of human root canal dentin.
MedLine Citation:
PMID:  20647102     Owner:  NLM     Status:  In-Process    
Abstract/OtherAbstract:
INTRODUCTION: The aim of this in vitro study was to evaluate the effect of 7% maleic acid and 17% EDTA solutions on the microhardness and the surface roughness of human root canal dentin. METHODS: Forty-five extracted human maxillary central incisors were sectioned longitudinally into a total of 90 segments, were embedded in auto polymerizing acrylic resin, and were grounded flat with silicon carbide abrasive papers. Based on the test solutions used, samples were divided randomly into three groups: (1) the EDTA group, 1 mL of 17% EDTA for 1 minute (n = 30), (2) the maleic acid group, 1 mL of 7% maleic acid for 1 minute (n = 30), and (3) the control group, 1 mL of 0.9% saline for 1 minute (n = 30). Every group was then divided into two subgroups of 15 specimens each. In group 1a, 2a, and 3a, specimens were used to determine the microhardness of the root canal dentine in the coronal, middle, and apical third using Vicker's hardness tester. In groups 1b, 2b, and 3b, specimens were used for the determination of surface roughness of the root canal dentine using a roughness tester (Surtronic, Leicester, England). The data were statistically analyzed using the Kruskall Wallis and Mann Whitney U tests. RESULTS: There was no significant difference between EDTA and maleic acid in the reduction of microhardness. The increase in roughness was significantly greater with maleic acid when compared with EDTA. CONCLUSION: Maleic acid reduced the microhardness of root dentin similar to EDTA but increased the surface roughness significantly more than EDTA.
Authors:
Nidambur Vasudev Ballal; Kundabala Mala; Kadengodlu Seetharama Bhat
Publication Detail:
Type:  Journal Article     Date:  2010-06-14
Journal Detail:
Title:  Journal of endodontics     Volume:  36     ISSN:  1878-3554     ISO Abbreviation:  J Endod     Publication Date:  2010 Aug 
Date Detail:
Created Date:  2010-07-21     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7511484     Medline TA:  J Endod     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1385-8     Citation Subset:  D    
Copyright Information:
Copyright 2010 American Association of Endodontists. Published by Elsevier Inc. All rights reserved.
Affiliation:
Manipal College of Dental Sciences, Manipal 576 104, Karnataka, India. drballal@yahoo.com
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