Abstract:
Objective To study the fluoride content in fissure enamel surface of permanent molars by using acid phosphate fluoride (APF) before placing pit and fissure sealant.
Methods Nine pairs of Caries-free extracted human third molars were randomly divided into two groups with nine teeth each. One side is the control group, the symmetrical teeth on the other side is test group. In the control group, sealants were placed after enamel etching with 37% phosphoric acid. In the test group, occlusal surfaces were treated by APF for four minutes, and then sealants were placed after enamel etching with 37% phosphoric acid. After sealing, the fluoride contents in fissure enamel surface of these samples were detected by electron probe microanalysiser (EPMA) . The values of fluoride content were compared between two groups were analyzed by SPSS software.
Results The fluoride content in fissure enamel is (0.50 ± 0.09) % in test group, and (0.24 ± 0.12) % in the control group. Statistical analysis shows the fluoride content in test group is significantly higher than that in the control group (t=-4.670, P= 0.002) .
Conclusion Topical fluoride application before placing pit and fissure sealant can increase the fluoride content of fissure enamel.
Key words:
Pit and fissure sealants,
Fluorine,
Electron probe microanalysis
Liping Zhao, Fei Guan, Qing Shi, Lihua Ge, Qian Mao. The fluoride content in fissure enamel with acid phosphate fluoride treatment before placing pit and fissure sealant[J]. Chinese Journal of Stomatological Research(Electronic Edition), 2016, 10(03): 184-186.