Document Detail

Protective influence of experimentally formed salivary pellicle on enamel erosion. An in vitro study.
MedLine Citation:
PMID:  12740548     Owner:  NLM     Status:  MEDLINE    
The purpose of this study was to evaluate dental erosion in 0.1 and 1.0% citric acid in vitro by several different methods and to assess the protective potential of experimentally formed salivary pellicle (24 h in vitro). Bovine enamel slabs were embedded in epoxy resin and polished. Erosion was performed in citric acid for 1, 5 or 10 min and recorded as microhardness loss, as changes of surface roughness (R(a), R(t) and R(zDIN)) and as calcium release. Additionally, erosive alterations were observed with scanning electron microscopy. Significant microhardness loss on non-pellicle-covered specimens was measured after 1-min exposure to 0.1% citric acid. Microhardness loss was time- and concentration-dependent. Salivary pellicle significantly inhibited both microhardness loss, except after 10-min immersion in 1.0% citric acid, and significantly reduced the increase of surface roughness. There were, however, no significant differences in calcium release between pellicle-covered and non-covered enamel. The results support the general conclusion that salivary pellicle effectively protects enamel surface against short-term erosion in organic acids.
Yuriy Nekrashevych; Lutz Stösser
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Caries research     Volume:  37     ISSN:  0008-6568     ISO Abbreviation:  Caries Res.     Publication Date:    2003 May-Jun
Date Detail:
Created Date:  2003-05-12     Completed Date:  2003-07-28     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  0103374     Medline TA:  Caries Res     Country:  Switzerland    
Other Details:
Languages:  eng     Pagination:  225-31     Citation Subset:  D; IM    
Copyright Information:
Copyright 2003 S. Karger AG, Basel
Department of Operative Dentistry and Periodontology, Saarland University, Homburg/Saar, Germany.
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MeSH Terms
Analysis of Variance
Citric Acid / adverse effects
Dental Deposits*
Dental Enamel / drug effects,  ultrastructure
Dental Enamel Solubility
Dental Pellicle
Hardness / drug effects
Microscopy, Electron, Scanning
Salivary Proteins and Peptides*
Surface Properties / drug effects
Tooth Erosion / prevention & control*
Reg. No./Substance:
0/Salivary Proteins and Peptides; 77-92-9/Citric Acid

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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