中文摘要：

目的：对存在牙周附着丧失并伴有咬合力过大的前牙进行咬合调整，分析咬合力降低对牙周附着丧失前牙的动度和牙周组织改建的影响。方法：选取26名患者197个存在牙周附着丧失且伴有咬合力过大的前牙，根据牙周附着丧失水平的不同分为3组：0～2mm组（66个牙）、2～4mm组（67个牙）、4～6mm组（64个牙）。采用T—ScanIn数字咬合测试系统对不同附着水平前牙的咬合力进行测量，对咬合力过大的前牙给予咬合调整治疗。运用激光位移测试仪测量咬合调整后3个月内的牙齿动度，采用重复测量方差分析来研究咬合调整对不同附着丧失前牙动度的影响。结果：咬合调整后3个月内牙周附着丧失≤4mm的前牙动度明显下降（P〈0。05）。附着丧失〉4mm的牙齿动度较未调殆组无统计学差异（P〉0．05）。结论：咬合力调整能明显降低附着丧失≤4mm的前牙动度，促进其牙周组织的改建。对于附着丧失较大的牙齿，咬合力降低对其牙周组织的改建作用不显著。

英文摘要：

AIM： To investigate the effect of occlusal adjustment （OA） on the mobility and periodontium remodeling of anterior teeth with clinical attachment loss （CAL）. METHODS ： 197 anterior teeth with CAL in 26 patients were divided into 3 groups according to the degree of CAL：0 ～2 mm（n =66） , 2 ～4 mm（n =67） and 4 -6 mm （n =64）. The teeth with excessive bite force was detected and received occlusal adjustment by T-Scanlll digital occlusal system. The mobility was recorded once a month using a laser displacement sensor from the beginning of the test to the end of the third month. A repeated measurement analysis of the variance was performed to analyze the effect of OA on teeth mobility and periodontium remodeling. RESULTS ： There was a significant decrease （ P 〈 0.05 ） of mobility of the anterior teeth with the CAL under 4mm contrasted with the control group. But the decrease of mobility was not significant （P 〉 0.05 ） when the CAL exceed 4mm. CONCLUSION ： OA can reduce the mobility of anterior teeth with CAL less than 4mm, and can improve the periodontium remodeling of these teeth, when the CAL is more than 4mm the effects may not be significant.