JDR JDR Most Read Articles
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

This Article
Right arrow Full Text (PDF)
Services
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Lagerlof, F.
Right arrow Articles by Dawes, C.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Lagerlof, F.
Right arrow Articles by Dawes, C.

Journal of Dental Research, Vol 63, 1266-1270, Copyright © 1984 by International & American Associations for Dental Research Online Journals

ARTICLES

Salivary clearance of sugar and its effects on pH changes by Streptococcus mitior in an artificial mouth

F. Lagerlof, R. Dawes and C. Dawes

We recently developed a computer model of oral sugar clearance (Dawes, 1983), and an artificial mouth has now been constructed which will allow variation in the salivary parameters identified in the model and the study of their effects on bacterial acid production. Using a thin layer of S. mitior, strain 572, over a miniature Sb electrode to measure bacterial pH changes during sugar clearance from the "mouth", we found that three consecutive sets of "Stephan curves" could be obtained with the same bacteria during one day. In each of several experimental series, one salivary parameter was varied, while other parameters were held constant. The maximum pH decrease and the surface area of the registered Stephan curve (delta pH.min) were used as measures of acid production. The results indicate that the volume of "saliva" in the mouth before and after swallowing, the unstimulated salivary flow rate, and the buffer capacity had significant influences on the extent of the pH changes. Other factors, such as the maximum flow rate, the delay between start of stimulation and maximum flow, the volume of saliva in the mouth at time zero, and the taste threshold for sugar, were of lesser importance, confirming some predictions from the computer model.


This article has been cited by other articles:


Home page
 Appl. Environ. Microbiol.Home page
C. K. Hope, A. Petrie, and M. Wilson
Efficacy of Removal of Sucrose-Supplemented Interproximal Plaque by Electric Toothbrushes in an In Vitro Model
Appl. Envir. Microbiol., February 1, 2005; 71(2): 1114 - 1116.
[Abstract] [Full Text] [PDF]

Home page
 Antimicrob. Agents Chemother.Home page
J. Pratten and M. Wilson
Antimicrobial Susceptibility and Composition of Microcosm Dental Plaques Supplemented with Sucrose
Antimicrob. Agents Chemother., July 1, 1999; 43(7): 1595 - 1599.
[Abstract] [Full Text]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
IADR Journals Advances in Dental Research ®
Journal of Dental Research ® Critical Reviews (1990-2004)
Copyright © 1984 Institutional Access Guidelines