Comparative Quantitative Assessments of Salivary Ion Activity Product for Hydroxyapatite and Buffering Capacity in Children with Different Caries Experience.
OBJECTIVE
If a relation exists between salivary IPHA, buffer capacity and caries experience, then this relationship could be used as screening chair side test for caries risk assessment.


METHODS
One hundred ninety seven children aged 4 to 6 years were examined. Data was collected by interview and clinical examination. They were divided into low, moderate and high caries experience group of 20 children each. Two ml of each sample was used to measure the pH value with pH meter. Regarding the buffering capacity, freshly prepared hydrochloric acid (HCl) was titrated into saliva and pH was recorded. The collected saliva samples were sent to Laboratory for measurement of calcium and phosphorus. IPHAwas calculated and the negative logarithms of IPHAwere used to determine the enamel solubility. The correlation between salivary IPHA, buffering capacity and caries experience were evaluated.


RESULTS
There was a significant relation between pH, log IPHAand dental caries experience, it could be considered as a predictor of dental caries.


CONCLUSIONS
pH measurement after HCl titration in saliva could be used as chair side screening test for the assessment of caries risk.
Siddharth
S
Anand
Updesh
U
Masih
Ramakrishna
R
Yeluri
D002021:Buffers; D002118:Calcium / Q000032:analysis*; D002648:Child; D002675:Child, Preschool; D004245:DMF Index; D003747:Dental Enamel Solubility / Q000502:physiology; D017886:Durapatite / Q000032:analysis*; D005260:Female; D006801:Humans; D006851:Hydrochloric Acid / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D006878:Hydroxides / Q000032:analysis*; D008297:Male; D010758:Phosphorus / Q000032:analysis*; D018570:Risk Assessment; D012463:Saliva / Q000737:chemistry* / Q000502:physiology; D017186:Titrimetry
D002021:Buffers; D006878:Hydroxides; D010758:Phosphorus; C031356:hydroxide ion; D017886:Durapatite; D006851:Hydrochloric Acid; D002118:Calcium
buffering capacity and hand held pH meter; ion activity product for hydroxyapatite (IPHA)