On baseline and 12 weeks, 24 weeks and 48 weeks after baseline, plaque index(PLI), sulcus bleeding index(SBI), probing depth(PD), clinical attachment loss(CAL) were checked and recorded.

• 结果菌斑控制组基线后12、24、48周时PLI、SBI、PD显著低于对照组(P<0.；05)；菌斑控制组基线后48周时CAL显著低于对照组(P<0