| Impact of brushing force on abrasion of acid-softened and sound enamel. | |
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MedLine Citation:
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PMID: 17658454 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVE: The study aimed to analyse the effects of different brushing loads on abrasion of acid-softened and sound enamel surfaces. DESIGN: Sound and acid-softened surfaces of each 10 human enamel samples were submitted to brushing abrasion in an automatic brushing machine at 1.5 N (A), 2.5 N (B), 3.5 N (C) or 4.5 N (D) brushing load. Prior to abrasion, demineralisation of half of each enamel surface was performed by storage in hydrochloric acid (pH 2.0) for 60s. Brushing was carried out (1000 strokes) using a manual toothbrush and toothpaste slurry in a ratio of 1:3. Enamel loss was measured after 10, 20, 50, 100, 150, 200, 250, 300, 350 and 1000 brushing strokes (BS). Pre- and post-brushing values of Knoop indentation length (5 indentations each sample) were measured and mean enamel loss was calculated from the change in indentation depth. Within- and between-group comparisons were performed by ANOVA and t-test followed by Bonferroni-correction. RESULTS: Enamel loss of acid-softened surfaces was significantly influenced by the brushing load applied and was mostly significantly higher in group D (10-1000 BS: 225-462 nm) compared to A (10-1000 BS: 164-384), B (10-1000 BS: 175-370 nm) and C (10-1000 BS: 191-396 nm). Abrasion of acid-softened enamel was fourfold higher compared to sound surfaces. Sound enamel was significantly influenced by the brushing force at 20-200 brushing strokes only, but revealed no significant differences between groups A-D. CONCLUSION: Brushing load influences abrasion of briefly eroded enamel, but might be of minor importance for abrasion of sound enamel surfaces. |
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Authors:
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A Wiegand; L Köwing; T Attin |
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Publication Detail:
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Type: Comparative Study; Journal Article Date: 2007-07-20 |
Journal Detail:
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Title: Archives of oral biology Volume: 52 ISSN: 0003-9969 ISO Abbreviation: Arch. Oral Biol. Publication Date: 2007 Nov |
Date Detail:
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Created Date: 2007-10-08 Completed Date: 2008-05-01 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0116711 Medline TA: Arch Oral Biol Country: England |
Other Details:
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Languages: eng Pagination: 1043-7 Citation Subset: D; IM |
Affiliation:
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Clinic for Preventive Dentistry, Periodontology and Cariology, University of Zürich, Plattenstrasse 11, CH-8032 Zürich, Switzerland. annette.wiegand@zzmk.unizh.ch |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Acids Analysis of Variance Biomechanics Case-Control Studies Dental Enamel / drug effects, pathology* Humans Tooth Abrasion / pathology* Tooth Demineralization / pathology* Toothbrushing / adverse effects* Toothpaste |
| Chemical | |
Reg. No./Substance:
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0/Acids; 0/Toothpaste |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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