医师操作水平对根管预备疗效的影响

目的：观察医师操作水平对根管预备疗效的影响.方法：选择164颗患牙,其中活髓牙66颗,感染根管牙98颗,随机分为2组,分别由2位不同年资的医师用ProTaper机用镍钛锉行根管预备,采用SAS6.2软件包进行统计学处理,x2检验比较2组患牙的器械折断率、根管治疗期间痛（EIP）发生率及根管充填成功率,分析医师操作水平对根管预备疗效的影响.结果：2组磨牙间的根管预备器械折断率有显著性差异（P＜0.05）;2组EIP发生率有高度显著性差异（P＜0.01）;在低年资医师组中,活髓牙和感染根管牙间有显著性差异（P＜0.05）;2组根管充填成功率有显著性差异（P＜0.05）,尤其是在感染根管磨牙组.结论：熟练、精确的操作能提高根管预备的疗效.

The effects of dentists' performance on the clinical effects of root canal preparation

PURPOSE: To evaluate the effects of dentists'performance on the clinical efficacies of root canal preparation. METHODS: 164 teeth, including 66 vital teeth and 98 necrotic pulp teeth , were divided into two groups in random. All the root canals were prepared using ProTaper nickel-titanium rotary by two dentists with junior senior qualification. The incidence of instruments fracture, endodontic interappointment pain (EIP) and successful rates of root canal filling of the two groups were compared by X2 test with SAS 6.2 software package. RESULTS: Between the two groups, the difference of the incidence of instruments fracture in molar was significant (P<0.05). The incidence of EIP between the two groups had high significant difference (P<0.01); The difference of vital teeth and necrotic pulp teeth was significant (P<0.05) in junior dentist group. The successful rates of root canal filling had significant differences (P<0.05), especially in necrotic pulp molar teeth. CONCLUSION: Skilled and accurate operation can improve the clinical efficacies of root canal preparation.