title: Relationship between head posture and dentofacial morphology in patients with TMJ osteoarthritis/osteoarthrosis.
abstract: OBJECTIVE
  To test whether there is a relationship between head and cervical posture and dentofacial morphology in patients with temporomandibular joint osteoarthritis/osteoarthrosis (OA).
  
  
  METHODS
  The subjects consisted of 34 Japanese females with TMJ OA (aged 24.7 +/- 6.1 years). Six craniocervical angular measurements were constructed for head posture. Two angular and 6 linear measurements were constructed for the skeletal relationship, while 1 angular and 6 linear measurements were constructed for the dental relationship. Pearson correlation coefficients were calculated between head posture and dentofacial variables.
  
  
  RESULTS
  In the skeletal relationship, increased craniocervical angulations were significantly associated with a more posterior position of the maxilla, a decreased Frankfort to mandibular plane angle, decreased mandibular length, and a decreased lower facial height. In the dental relationship, increased craniocervical angulations were significantly associated with more posterior positions of the anterior teeth to the basal bone and decreased alveolar height of the anterior-posterior teeth.
  
  
  CONCLUSIONS
  The hypothesis was rejected. These results suggest that an association may exist between head and cervical posture and dentofacial morphology in patients with TMJ OA.
authors.affiliation: Department of Orthodontics, Faculty of Dentistry, Kyushu University, Fukuoka, Japan. ioi@dent.kyushu-u.ac.jp
authors.forename: Hideki
authors.initials: H
authors.lastname: Ioi
authors.forename: Ryusuke
authors.initials: R
authors.lastname: Matsumoto
authors.forename: Masato
authors.initials: M
authors.lastname: Nishioka
authors.forename: Tazuko K
authors.initials: TK
authors.lastname: Goto
authors.forename: Shunsuke
authors.initials: S
authors.lastname: Nakata
authors.forename: Akihiko
authors.initials: A
authors.lastname: Nakasima
authors.forename: Amy L
authors.initials: AL
authors.lastname: Counts
mesh_terms: D000328:Adult; D002508:Cephalometry; D005260:Female; D006257:Head / Q000503:physiopathology*; D006801:Humans; D008310:Malocclusion / Q000503:physiopathology; D008445:Maxillofacial Development; D009333:Neck / Q000503:physiopathology; D010003:Osteoarthritis / Q000503:physiopathology*; D011187:Posture; D012189:Retrospective Studies; D013705:Temporomandibular Joint Disorders / Q000503:physiopathology*; D055815:Young Adult