title: [A retrospective study of 541 cases with segmental resection of mandible].
abstract: OBJECTIVE
  To evaluate the epidemiology and treatment of segmental defect of mandible.
  
  
  METHODS
  A total of 541 patients were evaluated retrospectively. The character of the mandibular defect and method of reconstruction were analyzed.
  
  
  RESULTS
  The majority of segmental defect of mandible were found in 40 - 70 years old males and the leading cause was tumor. The reconstruction methods included soft flap, reconstruction plate and bone grafts. The main complications were infection and fistula.
  
  
  CONCLUSIONS
  Tumor was the main cause of segmental resection of mandible, which occurs mainly in adult males. The body of the mandible was often involved. Vascularized bone grafts were the main methods in reconstruction of mandible.
authors.affiliation: Department of Oral and Maxillofacial Surgery, School of Stomatology, Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200011, China.
authors.forename: Tong
authors.initials: T
authors.lastname: Ji
authors.forename: Chen-ping
authors.initials: CP
authors.lastname: Zhang
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001860:Bone Plates; D016025:Bone Transplantation; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D008334:Mandible / Q000473:pathology / Q000601:surgery*; D008339:Mandibular Neoplasms / Q000601:surgery*; D008875:Middle Aged; D012189:Retrospective Studies; D013524:Surgical Flaps; D014025:Titanium / Q000627:therapeutic use*; D055815:Young Adult
chemical_list: D014025:Titanium