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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
Aim:
The aim of the study was to evaluate if pH indicator strips could be used for measurements of plaque pH acidogenicity in situ.
Method:
Interproximal plaque pH was measured before and up to 60 min after a 10% sucrose rinse in 30 healthy volunteers using pH indicator strips and the microtouch method in parallel.
Results:
It was found that the 'strip method' could determine changes in plaque pH to the same extent as the microtouch method (correlation coefficient 0.99).
Conclusion:
Since the 'strip method' is inexpensive and easy to handle, it may be applicable for assessment of plaque acidogenicity in the clinic.
