Results The average level of each group and the control patients completed the treatment time of root canal, root canal filling quality, satisfaction, there were significant differences(P <0.01).

结果观察组与对照级平均每例根管完成的治疗时间、根管充填质量、满意度比较差异均有统计学意义（P<0.01）。

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Results: (1) The average level of plasma cortisol in control group was significantly higher than that of experiment group ( P< 0.05 );

结果：（1）对照组血浆皮质醇浓度平均值显著高于试验组（P＜0.05）；

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Results: (1) The average level of plasma cortisol in control group was significantly higher than that of experiment group ( P< 0.05 );

结果：（1）对照组血浆皮质醇浓度平均值显著高于试验组（P＜0.05）；

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