关键词: 适应证, 牙源性角化囊肿, 单囊型成釉细胞瘤, 塞治器

Abstract: Decompression is a conservative treatment for large cystic lesion of jaw or cystic lesion during mixed dentition period in addescents to keep permanent teeth. It reduces cystic pressure by maintaining an opening into the oral cavity. Through regular irrigation，the lesion shrinks and new bone tissue forms，which preserves the important alveolar nerve and permanent teeth，eliminates the need for a bone graft by curettage and resection，and reduces the risk of pathological fractures，etc. It is more and more widely used in clinic. This paper reviews the new clinical progress in the treatment of cystic lesions of jaw with decompression.

Key words: indications, odontogenic keratocyst, unicystic ameloblastoma, drainage device