Methods EST and CST were applied contralateral first permanent molars of 84 children respectively to compare sealant retention rate of enameloplasty sealant technique with conventional sealant technique.

• 方法 在 84名儿童的第一磨牙上采用半口对照法比较窝沟釉质成形术和普通封闭术封闭剂的保存率。