PURPOSE: To explore the clinical effect of full- mouth scaling and root planning (FM- SRP) on chronic periodontitis with the comparison of quadrant scaling and root planning (Q- SRP).

• 目的:探讨一次性全口龈下刮治和根面平整术(full-mouth scaling and root planning,FM-SRP)治疗慢性牙周炎的效果,并与常规的分象限刮治(quad rantscaling and root planning,Q-SRP)效果进行比较。