SO SÁNH HIỆU QUẢ PHÒNG NGỪA XOI MÒN RĂNG CỦA GEL APF VÀ VERNI CHỨA FLUOR- THỬ NGHIỆM IN VITRO

Abstract

Objectives: This study aimed to evaluate the efficacy of APF gel and fluoride varnish in preventing dental erosion. Methods: 36 sound premolar teeth samples were selected and randomly divided into 2 groups according to material treatments as follows: Group 1(n=18): APF gel; Group 2 (n=18): fluoride varnish. After treatment with fluoride products, all samples were soaked in artificial saliva for 24 hours. The following day, all specimens were submitted to alternate cycles of acidic exposure in Cola beverage (pH 4.3) and artificial saliva solution 6 times × 5 minutes/day for 5 consecutive days. Vicker’s microhardness values were recorded each day and lesion depth values were measured at the end of the 5^th day. Results: Microhardness values of treated sides of Group 2 was significantly higher than the control side (p<0.05) and higher than the treated side of Group 1 through out the experiment (p< 0.05) except for the 5^th day. The erosion lesion depth values of treatment group 2 was signifincantly less than the control side and the treated side of Group 1 (p < 0.05). Conclusion: The present study showed that fluoride varnish is effective in resisting surface enamel erosion over a certain period. These products can be clinically indicated for preventing dental erosion in patients.