The 'strip method': a simple method for plaque pH assessment.
OBJECTIVE
The aim of the study was to evaluate if pH indicator strips could be used for measurements of plaque pH acidogenicity in situ.


METHODS
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).


CONCLUSIONS
Since the 'strip method' is inexpensive and easy to handle, it may be applicable for assessment of plaque acidogenicity in the clinic.
Carlén
Anette
A
Department of Oral Microbiology and Immunology, Institute of Odontology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden. anette.carlen@odontologi.gu.se
Hassan
H
H
Lingström
P
P
D000328:Adult; D019540:Area Under Curve; D003773:Dental Plaque / Q000737:chemistry*; D005260:Female; D006801:Humans; D006863:Hydrogen-Ion Concentration; D008297:Male; D008839:Microelectrodes; D008875:Middle Aged; D011934:Reagent Strips / Q000627:therapeutic use*; D012016:Reference Values; D017186:Titrimetry / Q000295:instrumentation / Q000379:methods* / Q000706:statistics & numerical data; D055815:Young Adult
D011934:Reagent Strips