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Semi-Automated Planimetric Quantification of Dental Plaque Using an Intraoral Fluorescence Camera
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The 'strip method': a simple method for plaque pH assessment.

Anette Carlén1, H Hassan, P Lingström

  • 1Department of Oral Microbiology and Immunology, Institute of Odontology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden. anette.carlen@odontologi.gu.se

Caries Research
|July 10, 2010
PubMed
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pH indicator strips effectively measure plaque acidogenicity in situ, correlating highly with the microtouch method. This inexpensive and easy-to-handle strip method shows promise for clinical plaque pH assessment.

Area of Science:

  • Dental Research
  • Biochemistry
  • Oral Microbiology

Background:

  • Plaque pH acidogenicity is a key factor in dental caries development.
  • Accurate in situ measurement of plaque pH is crucial for evaluating cariogenic potential.
  • Existing methods for plaque pH measurement can be complex or costly.

Purpose of the Study:

  • To assess the utility of pH indicator strips for in situ plaque pH acidogenicity measurements.
  • To compare the effectiveness of pH indicator strips with the established microtouch method.
  • To determine the clinical applicability of a simple plaque pH monitoring tool.

Main Methods:

  • Healthy volunteers (n=30) participated in the study.
  • Interproximal plaque pH was measured using pH indicator strips and the microtouch method.

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  • Measurements were taken before and up to 60 minutes after a 10% sucrose rinse.

    • Main Results:

    • The pH indicator strip method demonstrated high agreement with the microtouch method (correlation coefficient = 0.99).
    • The 'strip method' accurately determined changes in plaque pH following sucrose challenge.
    • Significant correlation indicates the reliability of the strip method for assessing acidogenicity.

    Conclusions:

    • pH indicator strips provide a reliable and valid method for measuring plaque pH acidogenicity in situ.
    • The 'strip method' is inexpensive, user-friendly, and suitable for clinical settings.
    • This approach offers a practical tool for assessing cariogenic risk in dental practice.