title: [Evaluation of a model of temporomandibular disorders established by transzygomatic arch traction of the mandibular ramus in rabbits].
abstract: OBJECTIVE
  To evaluate a model of temporomandibular disorders established by transzygomatic arch traction of the mandibular ramus in rabbits.
  
  
  METHODS
  Fifteen adult New Zealand rabbits were subjected to traction in the postero-superior direction unilaterally using elastic force and six rabbits used as the control. Histopathologic change of the disc, joint space and cartilage was observed through Hematoxylin and Eosin staining.
  
  
  RESULTS
  Anterior disc displacement or disc deformity in four experimental rabbits was observed on the traction side 2 weeks after operation. At 4 weeks, fibrous adhesions in joint compartment were found in five experimental rabbits. The condyles or articular eminences of some experimental rabbits showed irregularities on the cartilage surface. In the 6 th week, bad disc deformity in four rabbits and severe fibrous adhesions in five rabbits was observed on the traction side, and subchondralbone and calcified cartilage became irregular. In control group, All articular structures were normal.
  
  
  CONCLUSIONS
  A animal model of temporomandibular disorders can be established by transzygomatic arch traction of the mandible.
authors.affiliation: Department of Oral Anatomy and Physiology, College of Stomatology, Nanjing Medical Science University, Nanjing 210029, China.
authors.forename: Lai-kui
authors.initials: LK
authors.lastname: Liu
authors.forename: Yu-juan
authors.initials: YJ
authors.lastname: Hong
authors.forename: De-tao
authors.initials: DT
authors.lastname: Tao
authors.forename: Xiao-qing
authors.initials: XQ
authors.lastname: Li
authors.forename: Xin-zhu
authors.initials: XZ
authors.lastname: Yi
mesh_terms: D000818:Animals; D004195:Disease Models, Animal; D008334:Mandible / Q000473:pathology*; D011817:Rabbits; D013705:Temporomandibular Joint Disorders; D014143:Traction; D015050:Zygoma