EFFECT OF ADDING TRICALCIUM PHOSPHATE TO FLUORIDE MOUTHRINSE ON MICROHARDNESS OF DEMINERALIZED PRIMARY HUMAN TOOTH.

The Southeast Asian journal of tropical medicine and public health

PubMedID: 26521528

Rirattanapong P, Vongsavan K, Saengsirinavin C, Phuekcharoen P. EFFECT OF ADDING TRICALCIUM PHOSPHATE TO FLUORIDE MOUTHRINSE ON MICROHARDNESS OF DEMINERALIZED PRIMARY HUMAN TOOTH. Southeast Asian J Trop Med Public Health. 2015;46(3):539-45.
The purpose of the present study was to evaluate the effect of fluoride mouthrinse containing tricalcium phosphate on microhardness of demineralized primary enamel. Thirty-six sound primary incisors were immersed in a demineralizing solution (pH 4. 4) for 96 hours at 37 degrees C to create artificial caries-like lesions. After artificial caries formation, the specimens were randomly divided into 3 groups (with 12 specimens in each group): Group A: deionized water; Group B: 0. 05% NaF plus 20 ppm tricalcium phosphate mouthrinse and Group C: 0. 05% NaF mouthrinse. All the specimens were immersed for 1 minute at 37 degrees C three times per day for 7 days in the respective mouthrinse among pH cycling. The surface microhardness was examined using a Vickers hardness tester (100 grams for 15 seconds) at baseline, before and after the pH-cycling procedure. DATA
were analyzed using one-way ANOVA and Tukey's multiple comparison tests with a significance level of 0.05. After treatment, Group Ahad a significantly lower surface microhardness value than the other two groups (p=0. 000); however, there was no significant difference between Groups B and C (p=0. 728). We concluded fluoride mouthrinse containing tricalcium phosphate and fluoride mouthrinse have similar remineralizing effects on microhardness of demineralized primary teeth.