我科应用开窗术治疗了10例根尖病灶。经追踪观察疗效是满意的。其中1例失访,1例因根尖病灶大,术时固定欠佳致引流管滑入病灶而失败,最后施行了根尖切除术。其余8例中,7例病灶完全消失,1例病灶无变化。一、适应症X线显示凡根尖部有较大透射区,拟诊为根尖囊肿或根尖脓肿者。二、手术方法 My department applied fenestration treatment of 10 cases of apical lesions. Follow-up observation of the effect is satisfactory. One case was lost to follow-up, and one case failed due to large apical lesions, poor fixation during operation, and slippage of the drainage tube into the lesion. Finally, apical resection was performed. In the remaining 8 cases, 7 lesions disappeared completely and 1 lesions did not change. First, the indications X-ray showed that where the root tip of a larger transmissive area, to be diagnosed as apical cyst or apical abscess. Second, surgical methods