Methods: By480times quality control experiment of eight ordinary clinical chemistry examinations with normal and high value control material, the obtained data were analyzed.
方法用正常浓度值及高浓度值两种质控物，通过对常用8项临床化学检验共480次的质量控制实验的数据进行分析。
Methods the clinical experiment included 120 cases of mandibular premolars treated with root canal therapy, with 60 patients separately in control (K file) group and experimental (TF) group.
方法临床实验120例下颌双尖牙根管治疗病例，对照组(K锉)和实验组(TF)各60例。
The clinical symptom of the two group were all ameliorated obviously, but the amelioration of the experiment group was superior to the control group's (P< 0.01).
两组手术后临床症状均有明显改善，但实验组明显优于对照组（P<0.01）。
Total the completion be 117 clinical research case, among them experiment set 87, matched control 30.
共完成117例临床研究病例，其中试验组87例，对照组30例。
Total the completion be 117 clinical research case, among them experiment set 87, matched control 30.
共完成117例临床研究病例，其中试验组87例，对照组30例。
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