7-9周岁第一恒磨牙窝沟封闭效果的分析

汪伟佳张晓丹曹玉慧姜玲玲袁杰肖睿

Analysis about the effect of pit and fissure sealant of the first permanent molar in 7-9 years old

. 2019, (3): 235 -239 .