title: A Comparison of the Effect Between Coronoid Process Graft and Costochondral Graft in the Reconstruction of Temporomandibular Joint.
abstract: OBJECTIVE
  Bone graft to reconstruct the temporomandibular joint for ankylosis patient is effective. This study used three-dimensional measurement to evaluate the effect between free coronoid process graft (CPG) and costochondral graft (CCG) in the temporomandibular joint reconstruction.
  
  
  METHODS
  Patients treated with CPG or CCG from 2011 to 2014 were included in the study. Postoperative computed tomography scan data within 1 week and during at least 6 months follow-up after operation were imported into Proplan CMF 1.4 software (Materialize, Belgium) for three-dimensional reconstruction and measurement. Heights of the mandibular ramus were measured and compared between the 2 groups. Maximum mouth opening and occlusion were also evaluated and compared before and after operation.
  
  
  RESULTS
  Ten patients with 15 reconstructed joints were included in the study. In the CPG group, the decrease of ramus height was 5.4 mm after a mean follow-up period of 16.8 months (ranged from 6 to 22 months), whereas in the CCG group, it was 2.4 mm after a mean follow-up period of 14.4 months (ranged from 6 to 30 months). There was significant difference of ramus height decrease between the CPG group and the CCG group (P < 0.05). Maximum mouth opening was significantly increased after operation than before in both groups (P < 0.05). Open bite happened in 4 of 5 patients in the CPG group, and 1 of 5 patients in the CCG group.
  
  
  CONCLUSIONS
  CPG has higher frequency of a malocclusion secondary to resorption than CCG for the ramus reconstruction.
authors: Department of Oral Surgery, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Key Laboratory of Stomatology, Shanghai, China.
authors: Dong
authors: D
authors: Huang
authors: Chuan
authors: C
authors: Lu
authors: Zhengduo
authors: Z
authors: Yao
authors: Dongmei
authors: D
authors: He
authors: Chi
authors: C
authors: Yang
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000844:Ankylosis / Q000000981:diagnostic imaging / Q000601:surgery*; D002356:Cartilage / Q000637:transplantation*; D005260:Female; D006801:Humans; D007091:Image Processing, Computer-Assisted; D021621:Imaging, Three-Dimensional; D008297:Male; D011183:Postoperative Complications / Q000000981:diagnostic imaging; D019651:Plastic Surgery Procedures / Q000379:methods*; D012189:Retrospective Studies; D013704:Temporomandibular Joint / Q000000981:diagnostic imaging / Q000601:surgery*; D013705:Temporomandibular Joint Disorders / Q000000981:diagnostic imaging / Q000601:surgery*; D014457:Ulna / Q000637:transplantation*; D055815:Young Adult