The aim of this study to determine whether a pit fissure sealing teeth represents an effective method of decreasing the incidence of new dental caries, to gain the parents, teachers and Sumbangsih Education foundation acceptance on this new activity. Methods. The subjects were 7-11 year of age of 251 student of Sumbangsih Primary School, which located in Kemang, South Jakarta and Grogol, West Jakarta. Intra oral examinations and pit fissure sealing were done in the school dental clinic. The data were analyzed by Chi-square test. The results showed that, the number of student who receives pit-fissure sealant in primary school Kemang was 38%, and Grogol was 62%. The number of tooth with pit fissure sealant in 251 student was 825 tooth, however, the students who were received pit-fissure sealant age of 8 and 9 years old (40.36% and 43.39%) were higher then the other students of age 7, 10 and 11 years old. After 6 month evaluation, the occlusal sealant retention rates are including to, full complete retention in occlusal molar surface was 383 tooth had full retention higher significant than those of partial loss occlusant sealant retention (174 tooth). Nevertheless, the occlusal with complete sealant loos was significantly lower (p<0.001) than those of full occlusal sealant retention. The new decay was significantly decrease (p<0001) in all student, and almost 100% of parent of student were accepted the dental caries prevention through pit fissure sealant. further, almost more than 50% of tooth was still having a complete full retention glass-ionomer sealant. Conclusions. These findings were described that pit fissure sealant technique as an intervention for dental caries prevention in Sumbangsih primary school student could prevent the expansion of initial decay