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目的:评价混合技术法对根管预备的临床疗效。方法:91颗患牙分为两组,实验组45颗牙85个根管,采用混合技术进行根管预备,对照组46颗牙92个根管,采用逐步后退技术预备根管,两组均采用冷侧压技术充填根管。X线片结合临床评价根管预备效果。结果:实验组根管未有锥度、流畅度差者,对照组有5根管锥度、流畅度差者(P<0.05);术后疼痛实验组少于对照组。结论:混合技术法进行根管预备可形成大锥度、流畅根管形态,减少术后疼痛,可视为临床根管预备的有效方法。
Objective: To evaluate the clinical effect of mixed technique on root canal preparation. Methods: 91 teeth were divided into two groups, the experimental group of 45 teeth 85 root canal, root canal preparation using mixed techniques, the control group of 46 teeth 92 root canal, the gradual withdrawal technique for the preparation of root canal, two groups were Cold lateral pressure technique to fill the root canal. X-ray combined with clinical evaluation of root canal preparation. Results: There was no taper and fluency in the root canal of the experimental group. There were 5 tubes in the control group with poor taper and fluency (P <0.05). The postoperative pain was less in the experimental group than in the control group. Conclusion: The mixed technique method of root canal preparation can form a large taper, smooth root canal morphology, reduce postoperative pain, can be considered as an effective method of clinical root canal preparation.