In order to compare the disinfection efficacy of different disinfection methods in disinfection of stomatological handpiece in medical institutions field sampling examination method was used to observe the efficacy of ultraviolet irradiation disinfectant wiping and autoclaving in disinfection of toothdrill handpiece .

为了比较不同消毒方法对医疗机构口腔科手机消毒效果，采用现场采样检测方法，对紫外线照射法、消毒剂擦拭法和压力蒸汽灭菌法消毒 牙钻手机的效果进行了观察。

Results : After disinfection with high-intensity ultraviolet irradiation and wiping with disinfectant the rates of total bacterial count on toothdrill handpiece exceeding the allowable limit were 18.18 % and 9.09 % respectively .

结果，使用高强度紫外线照射消毒和消毒剂擦拭消毒， 牙钻手机上细菌总数超标率分别为18.18%和9.09%；

Conclusion : The efficacy of ultraviolet irradiation method and disinfectant wiping method in disinfecting toothdrill handpiece is relatively poor while autoclaving can fulfil the requirement of sterilization of toothdrill handpiece but it has certain damaging effect on toothdrill handpiece .

结论，紫外线照射法和消毒剂擦拭法对 牙钻手机消毒效果较差，压力蒸汽灭菌法可使牙钻手机达到灭菌要求，但其对牙钻手机有一定损坏作用。