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Related Experiment Videos

Simplified and quantitative saliva buffer capacity test using a hand-held pH meter.

Yuichi Kitasako1, Michiyo Moritsuka, Richard M Foxton

  • 1Cariology and Operative Dentistry, Department of Restorative Sciences, Graduate School, Tokyo Medical and Dental University, 5-45 Yushima 1-chome, Bunkyo-ku, Tokyo 113-8549, Japan. kitasako.ope@tmd.ac.jp

American Journal of Dentistry
|September 15, 2005
PubMed
Summary

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This study compared saliva buffer capacity in caries-risk patients using a hand-held pH meter and a buffer strip. Both methods showed significant correlation, though the buffer strip yielded inconclusive results in some cases.

Area of Science:

  • Biochemistry
  • Dental Research
  • Clinical Diagnostics

Background:

  • Saliva plays a crucial role in maintaining oral pH balance.
  • Accurate assessment of saliva buffer capacity is vital for identifying individuals at risk of dental caries.
  • Existing diagnostic tools for saliva buffer capacity vary in accuracy and ease of use.

Purpose of the Study:

  • To evaluate and compare the efficacy of a hand-held pH meter (B-212) and a commercial buffer strip (CRT) for measuring saliva buffer capacity.
  • To assess the correlation between these two methods in patients identified as being at risk of developing caries.
  • To determine the reliability of each method in categorizing saliva buffer capacity (high, medium, low).

Main Methods:

  • Stimulated saliva was collected from 109 patients at risk of caries.

Related Experiment Videos

  • Saliva buffer capacity was measured using a hand-held pH meter (B-212) with titration of hydrochloric acid (HCl).
  • A commercial buffer strip (CRT) was also used for evaluation, and results were statistically analyzed using Bartlett's test.

    • Main Results:

    • Both the B-212 pH meter and CRT categorized saliva buffer capacity into high, medium, and low ranks.
    • The B-212 pH meter results showed 50% high, 17% medium, and 33% low buffer capacity.
    • The CRT showed 56% high, 17% medium, and 27% low buffer capacity, with 23 inconclusive results.
    • A significant correlation (P < 0.001) was found between the ranking results of both methods.

    Conclusions:

    • The hand-held pH meter (B-212) and the commercial buffer strip (CRT) demonstrate a significant correlation in assessing saliva buffer capacity.
    • The B-212 pH meter provides a more consistent measurement, whereas the CRT may yield inconclusive results.
    • Both methods can be utilized to rank saliva buffer capacity in patients at risk of caries, aiding in risk assessment and management.