| Impact of the in situ formed salivary pellicle on enamel and dentine erosion induced by different acids. | |
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MedLine Citation:
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PMID: 18607835 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVE: To investigate and compare the protective impact of the in situ formed salivary pellicle on enamel and dentine erosion caused by different acids at pH 2.6. METHODS: Bovine enamel and dentine samples were exposed for 120 min in the oral cavity of 10 healthy volunteers. Subsequently, enamel and dentine pellicle-covered specimens were extraorally immersed in 1 ml hydrochloric, citric or phosphoric acid (pH 2.6, 60 s, each acid n=30 samples). Pellicle-free samples (each acid n=10) served as controls. Calcium release into the acid was determined by atomic absorption spectroscopy. The data were analysed by two-way ANOVA and Tukey's test (alpha=0.05). RESULTS: Pellicle-covered samples showed significantly less calcium loss compared to pellicle-free samples in all acid groups. The mean (SD) pellicle protection (% reduction of calcium loss) was significantly better for enamel samples [60.9 (5.3)] than for dentine samples [30.5 (5.0)], but revealed no differences among the acids. CONCLUSION: The efficacy of the in situ pellicle in reducing erosion was 2-fold better for enamel than for dentine. Protection of the pellicle was not influenced by the kind of acid when enamel and dentine erosion was performed at pH 2.6. |
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Authors:
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Annette Wiegand; Salome Bliggenstorfer; Ana Carolina Magalhaes; Beatrice Sener; Thomas Attin |
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Publication Detail:
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Type: Comparative Study; Journal Article; Randomized Controlled Trial |
Journal Detail:
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Title: Acta odontologica Scandinavica Volume: 66 ISSN: 1502-3850 ISO Abbreviation: Acta Odontol. Scand. Publication Date: 2008 Aug |
Date Detail:
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Created Date: 2008-07-14 Completed Date: 2008-08-21 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0370344 Medline TA: Acta Odontol Scand Country: Norway |
Other Details:
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Languages: eng Pagination: 225-30 Citation Subset: D; IM |
Affiliation:
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Clinic for Preventive Dentistry, Periodontology and Cariology, University of Zurich, Zurich, Switzerland. annette.wiegand@zzmk.unizh.ch |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aged Animals Buffers Calcium / analysis Cattle Citric Acid / adverse effects Dental Enamel / drug effects, pathology* Dental Pellicle / physiology* Dentin / drug effects, pathology* Female Humans Hydrochloric Acid / adverse effects Hydrogen-Ion Concentration Male Middle Aged Phosphoric Acids / adverse effects Protective Agents / pharmacology* Saliva / physiology, secretion Secretory Rate / physiology Spectrophotometry, Atomic Time Factors Tooth Erosion / chemically induced*, prevention & control |
| Chemical | |
Reg. No./Substance:
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0/Buffers; 0/Phosphoric Acids; 0/Protective Agents; 7440-70-2/Calcium; 7647-01-0/Hydrochloric Acid; 7664-38-2/phosphoric acid; 77-92-9/Citric Acid |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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