Objective :To explorer the effects of periodontal therapy on glycemic control of type 2 diabetic patients with periodontitis and the correlation between the periodontal disease and diabetes .Methods :120 patients with diabetes associated with periodontal disease were randomly divide into two groups ,system treatment of diabe-tes were given to each group but system treatment of periodontitis were given to only one group .Results :Both groups showed clinically significant improvement on glycemic control effect ,but the group treated plus systemic per-iodontal therapy responded well than the other .Conclusion:The improvement is expected in type 2 diabetic patients with peridontitis treated by periodontal therapy .%目的：探讨牙周治疗对2型糖尿病患者血糖控制效果的影响，以及牙周病与糖尿病之间的相互关系。方法：120例患有糖尿病同时伴有牙周病的患者，将其随机分成牙周治疗组和对照组两组，所有患者均进行糖尿病的系统治疗，牙周治疗组增加牙周病的系统治疗。结果：牙周病治疗组糖尿病治疗效果明显高于单纯糖尿病治疗组（P＜0．05）。结论：牙周病和糖尿病之间存在相关性，牙周病治疗有助于糖尿病的控制，并有助于改善糖尿病患者的口腔美学效果。
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