Abstract: Objective: To treat large mandibular cystic lesions by fenestration decompression  and to explore its clinical value in mandibular functional surgery． Methods: 34 large mandibular cystic lesions cases treated by fenestration decompression were reviewed． All cases were followed－up at least 12 months． According to the clinical observation, and radiological examination，the clinical cure rate was evaluated． Results: 34 cases were followed－up for 1～9 years． The cystic cavity of 11 cases almost regressed completely, and thus didn't need a two-stage treatment. However, the cystic cavity of another 23 cases reduced significantly and were treated by two-stage curettage． The bone morphology and function resumed well and no reoccurrence was identified. Conclusion: The treatment of larger mandibular cystic lesions by decompression was effective to save the morphology and function of mandible．

Key words: fenestration decompression, cystic lesions, mandible, curative effect

摘要： 目的：通过开窗减压术治疗下颌骨大型囊性病变，探讨其在下颌骨功能性外科中的应用价值。方法：34例下颌骨大型囊性病变患者采用开窗减压术治疗，术后随访12个月以上，通过临床和影像学检查评价治疗效果。结果：34例病例术后随访1～9年。11例囊腔基本完全消退未进行二期处理，23例囊腔显著缩小行二期刮治手术。所有病例形态功能恢复良好无复发。结论：开窗减压术治疗下颌骨大型囊性病变，是保存下颌骨形态及功能的有效方法。

关键词: 开窗减压术, 囊性病变, 下颌骨, 疗效

CLC Number: 

• R739． 82