我们用 CO_2激光对64例上颌窦病变施行上颌窦根治术,以期改进手术方法,提高手术疗效。并对激光切开的正常组织作常期疗效观察。48例观察7～8年以上,16例超过4—5年。结果提示,手术时出血少,不作碘仿纱条填塞,激光代替常规器械,简化手术操作,缩短手术时间,减少病员痛苦,引流孔全部通畅,比常规手术疗效显著提高。对正常粘膜、肌肉和骨质切除后均无后遗症,因此,CO_2激光手术,不但提高疗效,而且对正常组织无不 64 cases of maxillary sinus lesions were treated by CO_2 laser in order to improve the operation method and improve the curative effect. And the laser-incised normal tissue for long-term efficacy. 48 cases observed more than 7 to 8 years, 16 cases more than 4-5 years. The results suggest that less bleeding during surgery, not for iodoform gauze packing, laser instead of conventional instruments, to simplify the operation, shorten the operation time and reduce the patient’s pain, drainage holes all open, significantly improved than the conventional surgery. On the normal mucosa, muscle and bone resection without complications, therefore, CO_2 laser surgery, not only improve the efficacy, but also for normal tissue