Document Detail

An in vitro method for making repeated pH measurements on human dental plaque.
MedLine Citation:
PMID:  6588077     Owner:  NLM     Status:  MEDLINE    
A combination pH micro-electrode inserted into human plaque centrifuged to the base of a closely-fitting fine-mesh wire "basket" has been used to make continuous recordings of the pH responses produced by exposure to various carbohydrate substrates. The pH depressions given by continued immersion in sugar and starch solutions resemble, both in depth and duration, those obtained by telemetric pH measurements of approximal plaque samples. In contrast, brief exposure to sugar solutions will produce a Stephan type of pH curve. Measurements of pH can be made using a succession of different substrates if, after each substrate is tested, the electrode-plaque assembly is washed with water and its acidity neutralized in circulating saliva. It is suggested that this in vitro pH method could be used instead of the telemetric measurements of approximal plaque for comparing acid production from foods or for other purposes.
B G Bibby; A Krobicka
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Publication Detail:
Type:  In Vitro; Journal Article    
Journal Detail:
Title:  Journal of dental research     Volume:  63     ISSN:  0022-0345     ISO Abbreviation:  J. Dent. Res.     Publication Date:  1984 Jun 
Date Detail:
Created Date:  1984-08-07     Completed Date:  1984-08-07     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0354343     Medline TA:  J Dent Res     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  906-9     Citation Subset:  D; IM    
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MeSH Terms
Dental Plaque / metabolism,  physiopathology*
Dietary Carbohydrates / metabolism
Equipment Design
Hydrogen-Ion Concentration
Saliva / physiology
Reg. No./Substance:
0/Dietary Carbohydrates; 7732-18-5/Water

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

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