title: Cone-beam computed tomography evaluation of the maxillofacial features of patients with unilateral temporomandibular joint ankylosis undergoing condylar reconstruction with an autogenous coronoid process graft.
abstract: OBJECTIVE
  To evaluate the changes in the jaws and the upper airways of unilateral temporomandibular joint ankylosis patients who underwent condylar reconstruction via autogenous coronoid process grafts using cone-beam computed tomography (CBCT).
  
  
  METHODS
  The 27 included patients underwent CBCT examinations at three stages: T0 (within two weeks before surgery), T1 (two weeks after surgery), and T2 (an average of 13 months after surgery). Forty items related to the maxillofacial hard tissues and the upper airway collected at the three times and the coronoid process graft volumes after surgery were compared.
  
  
  RESULTS
  Some integral items related to the mandibular hard tissues exhibited statistical difference shortly after surgery. Some integral items related to maxillofacial hard tissues changing obviously long period after surgery may result from graft remodeling. Asymmetry-related item regarding local neo-condyle and some airway items were significantly different between T0 and T1. Due to variations in graft remodeling, some related local asymmetry items and airway items differed significantly between T0 and T2.
  
  
  CONCLUSIONS
  Anteriorly and inferiorly located neo-condyles and a trend toward the pronation of the mandible were observed and the narrowness of the upper airway was improved shortly after surgery. The grafts remodeled differently and some integral and asymmetry items related to neo-condyle changed. The improvements in the upper airway were slightly reduced.
authors.affiliation: State Key Laboratory of Oral Disease and National Clinical Research Center for Oral Disease, Department of Oral Radiology, West China Hospital of Stomatology, Sichuan University, Chengdu, China.
authors.forename: Li
authors.initials: L
authors.lastname: Liu
authors.affiliation: State Key Laboratory of Oral Disease and National Clinical Research Center for Oral Disease, Department of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, China.
authors.forename: Jiayang
authors.initials: J
authors.lastname: Li
authors.affiliation: State Key Laboratory of Oral Disease and National Clinical Research Center for Oral Disease, Department of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, China.
authors.forename: Huanzhong
authors.initials: H
authors.lastname: Ji
authors.affiliation: State Key Laboratory of Oral Disease and National Clinical Research Center for Oral Disease, Department of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, China.
authors.forename: Nian
authors.initials: N
authors.lastname: Zhang
authors.affiliation: State Key Laboratory of Oral Disease and National Clinical Research Center for Oral Disease, Department of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, China.
authors.forename: Yiyao
authors.initials: Y
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Oral Disease and National Clinical Research Center for Oral Disease, Department of Oral Radiology, West China Hospital of Stomatology, Sichuan University, Chengdu, China.
authors.forename: Guangning
authors.initials: G
authors.lastname: Zheng
authors.affiliation: State Key Laboratory of Oral Disease and National Clinical Research Center for Oral Disease, Department of Oral Radiology, West China Hospital of Stomatology, Sichuan University, Chengdu, China.
authors.forename: Hu
authors.initials: H
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Oral Disease and National Clinical Research Center for Oral Disease, Department of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, China.
authors.forename: En
authors.initials: E
authors.lastname: Luo
mesh_terms: D000328:Adult; D000844:Ankylosis / Q000000981:diagnostic imaging* / Q000503:physiopathology / Q000601:surgery; D064592:Autografts / Q000637:transplantation; D016025:Bone Transplantation / Q000379:methods; D054893:Cone-Beam Computed Tomography / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008334:Mandible / Q000000981:diagnostic imaging* / Q000503:physiopathology / Q000601:surgery; D008335:Mandibular Condyle / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery; D008875:Middle Aged; D057909:Orthognathic Surgery / Q000379:methods; D013704:Temporomandibular Joint / Q000000981:diagnostic imaging* / Q000503:physiopathology / Q000601:surgery; D013705:Temporomandibular Joint Disorders / Q000000981:diagnostic imaging* / Q000503:physiopathology / Q000601:surgery