Methods Endodontic retreatment with ultrasound was used in 156 cases.
方法应用156例牙髓治疗失败牙的再处理进行临床观察分析。
Objective To investigate and evaluate the method of the endodontic retreatment therapy failure.
目的对牙髓治疗失败牙再处理和疗效作出评价。
Objective To investigate and evaluate the method of the endodontic retreatment therapy failure.
目的对牙髓治疗失败牙再处理和疗效作出评价。
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