title: [Therapeutic effect of staged treatment for huge mandibular cystic lesions].
abstract: OBJECTIVE
  To investigate the therapeutic effect of staged treatment for huge mandibular cystic lesions.
  
  
  METHODS
  The study enrolled 18 cases of huge cystic lesions whose extent in X-ray film exceeded 5 cm from 2005 to 2009 in our hospital, 6 of them presented mal-aligned dentition. Decompression was first given under local anesthesia to make the entire extent gradually reduced to half of its primary extent, then the cysts were enucleated secondarily combined with simultaneous Bio-oss insertion under general anesthesia, followed by X-ray examination monthly to observe the density of bone, and normal orthodontic treatment was given to 6 cases with malocclusion.
  
  
  RESULTS
  The lesions reduced to around half of the primary extent in 4 to 6 months after decompression,the density of bone substitute became almost similar to adjacent bone 6 to 12 months after secondary operation, no case had recurrence within 2 to 3 years. 6 cases with malocclusion were corrected after 2 to 3 years of orthodontic therapy.
  
  
  CONCLUSIONS
  The staged treatment can retain the whole mandible and teeth at the same time of enucleation of the cyst, and achieve excellent aesthetic result combined with orthodontic therapy.
authors.affiliation: Department of Stomatology, Huzhou Central Hospital, Huzhou 313000, Zhejiang Province, China. buling@163.com
authors.forename: Qing
authors.initials: Q
authors.lastname: Zhang
authors.forename: Li-hua
authors.initials: LH
authors.lastname: Fang
authors.forename: Ping-xiu
authors.initials: PX
authors.lastname: Zhou
authors.forename: Duo
authors.initials: D
authors.lastname: Jv
mesh_terms: D019299:Decompression, Surgical; D006801:Humans; D008310:Malocclusion; D008334:Mandible; D008903:Minerals
chemical_list: C077540:Bio-Oss; D008903:Minerals