在小学校开展窝沟封闭防龋的效果观察黑龙江省邮电医院田锦哈尔滨医科大学一院李晓刚黑龙江省林业医院田宏目前，国内外广泛应用的氟化物局部防龋方法如含氟牙膏刷牙、氟水漱口等对降低窝沟龋的效果不理想。本实验采用目前许多国家已经使用的窝沟封闭方法，在小学校中经过... In the primary school to carry out the effect of pit and ditch closed caries preventionTianjin Harbin Medical University Heilongjiang Provincial Hospital, a hospital Li Xiaogang Heilongjiang Provincial Forestry Hospital Tian Hong At present, the widespread use of fluoride local anti-caries methods such as fluoride toothpaste, fluoride water Mouthwash, etc. to reduce the effect of pit and fissure caries is not ideal. This experiment uses the pit and fissure sealant method that many countries have used at present, after the primary school ...