The success rate of root canal retreatment can be increased by proper management with micro-ultrasonic technique and warm vertical technique.

合理、完善的治疗操作结合显微超声技术和热牙胶充填可有效提高根管再治疗的成功率。

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After implementing the new strategy named Short Course Chemotherapy, the rate of cure new cases of smear positive TB increased to over 95%, while the cases needed retreatment was decreased to 18.27%.

实施直接面视下短程化学疗法策略，使新发涂阳患者治愈率提高到95 %以上，同期，复治涂阳肺结核患者比例最低下降到18 2 7%。

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