| Impact of the acid flow rate on dentin erosion. | |
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MedLine Citation:
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PMID: 16713669 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVE: The study aimed to evaluate the erosive effects of acids flowing with different velocities and duration on dentin previously pre-treated with distilled water or human saliva. METHODS: Bovine dentin surfaces were submitted to a 10 min demineralisation with hydrochloric or citric acid (pH 2.3, 37 degrees C) in an artificial mouth at flow rates of 3, 2.25, 1.5, 0.75 or 0.15 ml/min or in 30 ml of the respective acid without movement (each subgroup n=16 specimens). Prior to the demineralisation, half of the specimens of each group were either pre-treated with distilled water or human saliva for 120 min. After 2, 5 and 10 min demineralisation, profilometric traces of dentin loss were performed perpendicular to the direction of acid flow at three sites (A-C) with intervals of 500 microm. The first profile (A) was taken in a distance of 1.5 mm from the acid starting to flow over the sample. Thus, median dentin loss at each site was calculated and statistically analysed by five-way ANOVA. RESULTS: Dentin loss increased with increasing acid flow rate and demineralisation time and was higher for demineralisation with citric acid compared to hydrochloric acid. For given flow rates of 0.15 to 3 ml/min, measurement of dentin loss yielded highest values for site A and decreasing values for sites B and C. For all groups, no significant differences of dentin loss were observed between specimens pre-treated with distilled water or human saliva. CONCLUSION: Under the conditions of this study, both duration of demineralisation and acid flow rate but not pre-treatment with distilled water or saliva influence the extent of dentin erosion. |
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Authors:
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A Wiegand; A Stock; R Attin; C Werner; T Attin |
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Publication Detail:
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Type: Journal Article Date: 2006-05-19 |
Journal Detail:
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Title: Journal of dentistry Volume: 35 ISSN: 0300-5712 ISO Abbreviation: J Dent Publication Date: 2007 Jan |
Date Detail:
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Created Date: 2006-12-18 Completed Date: 2007-07-30 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0354422 Medline TA: J Dent Country: England |
Other Details:
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Languages: eng Pagination: 21-7 Citation Subset: D; IM |
Affiliation:
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Department of Operative Dentistry, Preventive Dentistry and Periodontology, University of Göttingen, Robert-Koch-Str. 40, 37075 Göttingen, Germany. annette.wiegand@zzmk.unizh.ch |
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Analysis of Variance Animals Cattle Citric Acid / adverse effects* Dentin / drug effects* Female Humans Hydrochloric Acid / adverse effects* Male Saliva Solvents / adverse effects* Time Factors Tooth Demineralization / chemically induced Tooth Erosion / chemically induced* |
| Chemical | |
Reg. No./Substance:
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0/Solvents; 7647-01-0/Hydrochloric Acid; 77-92-9/Citric Acid |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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