title: [Classification and reconstruction of 1,107 cases of maxillary defects].
abstract: OBJECTIVE
  To investigate the defect types and reconstruction methods of maxillary defects.
  
  
  METHODS
  The database of 1,107 cases with maxillary defects in Peking University School and Hospital of Stomatology from January 1985 to December 2010 was established. There construction methods were reviewed. The defect types were classified according to Brown classification system.
  
  
  RESULTS
  In the 1,107 cases, 1,104 cases could be classified according to Brown classification system. The most common type was 2a with 559 cases (50.6%). Among all the 1,107 cases, 349 cases were reconstructed with autotransplantation, 443 cases with prosthesis, 107 cases untreated, and 208 patients lost to the follow-up. There was a significant growing trend over time for the application of free flaps and a downward trend of prosthesis. The most popular free flaps were fibular flap (88 cases) and radial forearm flap (75 cases). Rectus abdominis flap and anterolatreal thigh flap were fit for extensive maxillary defects.
  
  
  CONCLUSIONS
  The most common defect type is 2a. Free flap has become the dominant option for maxillary reconstruction. Free flaps could be selected according to the maxillary defect types.
authors.affiliation: Department of Oral and Maxillofacial Surgery, Second Clinical Division, Peking University School and Hospital of Stomatology, Beijing 100101, China.
authors.forename: Sen
authors.initials: S
authors.lastname: Yu
authors.affiliation: Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing 100081, China.
authors.forename: Yang
authors.initials: Y
authors.lastname: Wang
authors.affiliation: Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing 100081, China.
authors.forename: Chi
authors.initials: C
authors.lastname: Mao
authors.affiliation: Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing 100081, China.
authors.forename: Chuan-bin
authors.initials: CB
authors.lastname: Guo
authors.affiliation: Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing 100081, China.
authors.forename: Guang-yan
authors.initials: GY
authors.lastname: Yu
authors.affiliation: Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing 100081, China.
authors.forename: Xin
authors.initials: X
authors.lastname: Peng
mesh_terms: D058752:Free Tissue Flaps; D006801:Humans; D008437:Maxilla / Q000473:pathology* / Q000601:surgery*; D019919:Prosthesis Implantation; D019651:Plastic Surgery Procedures; D013524:Surgical Flaps