Document Detail

Dentine hypersensitivity--effects of some proprietary mouthwashes on the dentine smear layer: a SEM study.
MedLine Citation:
PMID:  1939814     Owner:  NLM     Status:  MEDLINE    
Exposed dentine may be sensitive to stimuli depending on the patency of the dentinal tubules. Most abrasive elements tend to produce a smear layer which obturates the dentinal tubules. This layer is easily removed by a number of erosive agents, particularly dietary acids. Mouthwashes are increasingly used and largely investigated for possible benefits to dental health. Rarely do studies assess potential detrimental activity. The aim of the present study was to examine effects of mouthwashes on dentine. Smear layers artificially produced on dentine sections were exposed, for time periods ranging from 3 to 300 min, to mouthrinses alone, or with subsequent brushing for 2 min using water or a fluoride toothpaste. Assessments were made by scanning electron microscopy. Of the nine rinses tested, six produced no consistently observable changes compared to water treated controls at any time period with or without brushing. A hexetidine rinse and a fluoride/antiseptic rinse both exposed tubules after exposure times of 2 h and longer, an effect enhanced by post-treatment brushing. A phenolic antiseptic rinse consistently removed the smear layer from specimens, an effect enhanced by brushing such that after 10 min exposure and 2 min brushing many tubules were open at the surface. The results indicate that the use of some mouthrinses could predispose to excessive tooth substance loss and dentine hypersensitivity, particularly if used prior to toothbrushing. There is a need to determine whether the intermittent use of some mouthrinses produces cumulative effects on dentine.
M Addy; T Loyn; D Adams
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of dentistry     Volume:  19     ISSN:  0300-5712     ISO Abbreviation:  J Dent     Publication Date:  1991 Jun 
Date Detail:
Created Date:  1991-12-13     Completed Date:  1991-12-13     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0354422     Medline TA:  J Dent     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  148-52     Citation Subset:  D; IM    
Department of Periodontology, Dental School, University of Wales College of Medicine, Cardiff, UK.
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MeSH Terms
Benzoates / pharmacology
Benzoic Acid
Cetylpyridinium / pharmacology
Chlorhexidine / pharmacology
Dentin / drug effects*,  ultrastructure
Dentin Sensitivity / etiology*
Fluorides / pharmacology
Hexetidine / pharmacology
Microscopy, Electron, Scanning
Mouthwashes / pharmacology*
Phenols / pharmacology
Sodium Dodecyl Sulfate / pharmacology
Time Factors
Toothpaste / pharmacology
Reg. No./Substance:
0/Benzoates; 0/Fluorides; 0/Mouthwashes; 0/Phenols; 0/Toothpaste; 108-95-2/Phenol; 141-94-6/Hexetidine; 151-21-3/Sodium Dodecyl Sulfate; 55-56-1/Chlorhexidine; 65-85-0/Benzoic Acid; 7732-18-5/Water; 7773-52-6/Cetylpyridinium

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

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