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目的:观察液氮冷冻疗法在一次法根管治疗术中的临床应用效果。方法:将162例牙髓病、慢性根尖周炎病例随机分成治疗组和对照组,每组各81例,治疗组行根管预备后采用液氮对根管进行冷冻消毒,并及时行根管充填。对照组按常规的根管治疗术治疗,一年后观察疗效。结果:治疗组和对照组术后治疗效果无显著性差异。结论:液氮冷冻在一次法根管治疗中应用效果好,操作简单,可大大缩短治疗时间,且无不良反应。
Objective: To observe the effect of liquid nitrogen cryotherapy in clinical application of root canal therapy. Methods: 162 cases of endodontic disease and chronic apical periodontitis were randomly divided into treatment group and control group, with 81 cases in each group. In the treatment group, the root canals were frozen and disinfected with liquid nitrogen and rooted in time Tube filling. The control group was treated by conventional root canal therapy and the effect was observed one year later. Results: The treatment group and control group postoperative treatment no significant difference. Conclusion: Liquid nitrogen freezing is effective in one-time root canal therapy and its operation is simple. It can shorten the treatment time greatly and has no adverse reactions.