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目的:回访分析采用超声波根尖倒预备的根尖手术术后1年临床疗效,并与常规根尖倒预备法对照分析。方法:回访分析根尖切除术病例98例,其中采用常规根尖倒预备(conventional technique,C组)的58例,采用超声波根尖倒预备(ultra-sonic root end preparation,U组)的40例。采用双盲分析法对这些病例的临床效果进行评估。结果:超声波根尖倒预备组(U组)的1年成功率为90.0%,其中切牙为92.6%,前磨牙为84.6%。常规根尖倒预备组(C组)的1年成功率为82.8%,其中切牙为91.2%,前磨牙为70.8%。结论:根尖倒预备能够提高根尖切除术的临床疗效。超声波倒预备比常规根尖倒预备的成功率高,超声波倒预备利于更严密地封闭根尖。
Objective: To retrospectively analyze the clinical effect of one-year follow-up of root apical surgery with ultrasonic tip preparation, and compare it with the conventional apical hypothermia. Methods: A total of 98 cases of apical resection were retrospectively analyzed. Among them, 58 cases were treated with conventional technique (group C) and 40 cases with ultra-sonic root end preparation (group U) . The clinical efficacy of these cases was assessed by double-blind analysis. Results: The one-year success rate was 90.0% in the root-tip replacement group (U group), including 92.6% for incisor and 84.6% for premolar. The one-year success rate was 82.8% in the conventional apical tumbling preparation group (group C), including 91.2% for incisors and 70.8% for premolar. Conclusion: Apical dorsal root replacement can improve the clinical efficacy of apical ablation. Ultrasound down the reserve than the conventional tip preparation success rate is high, the ultrasonic inverted reserve will help close the root tip more closely.