مقایسه ماندگاری درمان‌های پیت و فیشور سیلانت انجام شده توسط دو ماده‌ی کامپوزیت فلو و رزین مدیفایدگلاس آینومر مقایسه ماندگاری درمان‌های پیت و فیشور سیلانت انجام شده توسط دو ماده‌ی کامپوزیت فلو و رزین مدیفایدگلاس آینومر

Background and purpose: Deep fissures of occlusal surface in recently erupted first permanent molars are prone to accumulation of bacterial plaque. Sealing these fissures by appropriate flowing materials, as pit and fissure sealants, is a conservative way to prevent caries. The purpose of this study was to compare retention of flowable composite resin by resin modified glass ionomer sealant in six months period. Materials and methods: The occlusal surfaces of the first permanent mandibular molars of 50 children aged 6 to 12 attending pediatric department in dental school affiliated with Qazvin University of Medical Sciences were assessed via Williams probe, intra-oral mirror, and diagnodent. After confirming absence of caries, flowable composite resin were placed on the left first permanent mandibular molars, and resin modified glass ionomer (RMGI) were placed on the opposite side. After 6 months, 46 patients referred for follow up, in whom the retention of sealants was assessed using sharp explorer and intra-oral mirror, and caries were assessed via diagnodent. Data was analyzed in SPSS20 applying Chi- square test. Results: The retention of flowable composite (91.3%) was significantly more than that of the resin modified glass ionomer (56.5%) (P<0.05). There were no cases with total loss of material in flowable composite. No caries were observed using the diagnodent. Conclusion: The flowable composite resin could be used as a fissure sealant agent, due to its greater retention compared to resin modified glass ionomer. &nbsp;