Objective To investigate the effect of Vector periodontal therapy and traditional ultrasonic therapy on diabetic patients with chronic periodontitis and the degree of pain. Methods The 46 patients who with diabetes and chronic peri-odontitis been treatment in Changchun stomatological hospital during December 2014 to April 2015 were chosen. All pa-tients randomly to choose a single jaw be treated by Vector Periodontal Apparatus The other jaw was treated by Traditional Ultrasonic Instrument. The depth of periodontal pocket, the loss of periodontal attachment and periodontal probe bleeding were examined in 3 months after treatment. The pain evaluation was performed immediately after the end of the treatment. Results Both Vector Periodontal Apparatus and Traditional Ultrasonic Instrument showed improvement with the depth of periodontal pocket, the loss of periodontal attachment and periodontal probe bleeding. There was no significant difference in the treatment effect between two experimental groups. Vector treatment group was significantly lower than the traditional group with pain. Conclusion The good clinical effect of treatment can be reached by Vector therapeutic apparatus and tra-ditional ultrasonic instrument. The Lower levels of pain can be alleviated by Vector.%目的：探讨Vector牙周治疗仪与传统超声治疗仪对糖尿病伴慢性牙周炎的疗效和患者疼痛程度。方法选取2014年12月—2015年4月期间就诊于吉林省长春市口腔医院牙周病科糖尿病伴慢性牙周炎患者46例，在每例患者的上、下颌随机任选一单颌应用Vector牙周治疗仪治疗，同一患者另一单颌作为对照使用传统超声治疗仪治疗。治疗前和治疗完成3个月后检查牙周探诊深度、牙周附着丧失和探诊出血。并在每个患者治疗结束后立即进行视觉模拟评分完成患者治疗过程中的疼痛评价。结果 Vector牙周治疗仪组与传统超声治疗仪组治疗后牙周探诊深度、牙周附着丧失和探诊出血情况均有改善，治疗前与治疗后比较差异有统计学意义（P＜0.05）。而两实验组之间治疗效果比较差异无统计学意义（P＞0.05）。 Vector治疗仪组疼痛值明显低于传统超声仪组，两组间数据比较差异有统计学意义（P＜0.05）。结论 Vector治疗仪与传统超声治疗仪治疗糖尿病伴慢性牙周炎均能达到良好的临床效果，同时Vector治疗仪能明显减轻患者的疼痛程度。
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