title: Evaluation of stomatognathic function in orthodontic treatment.
abstract: OBJECTIVE
  To evaluate changes in stomatognathic function related to orthodontic treatment in 4 patients with various types of dysfunction of the stomatognathic system present prior to orthodontic treatment.
  
  
  METHODS
  Four patients who visited the Orthodontic Clinic at Tokyo Medical and Dental University Hospital and whose active orthodontic treatment was complete were analyzed both morphologically and functionally. To analyze stomatognathic function, electromyographic activity of the masticatory muscles and mandibular movements was recorded.
  
  
  RESULTS
  In all 4 patients, changes in stomatognathic function were observed following improvements in craniofacial structural and interocclusal relationships. Many of these changes consisted of elimination of functional disharmony, although the cause-effect relationship between these functional changes and orthodontic treatment is unclear.
  
  
  CONCLUSIONS
  Functional analysis during orthodontic treatment can provide useful information concerning the relationship between craniofacial structures and stomatognathic function.
authors.affiliation: Graduate School, Tokyo Medical and Dental University, Tokyo, Japan. sige-hiyama@nifty.com
authors.forename: Shigetoshi
authors.initials: S
authors.lastname: Hiyama
authors.forename: Sachiko
authors.initials: S
authors.lastname: Asakawa
authors.forename: Takashi
authors.initials: T
authors.lastname: Ono
authors.forename: Masumi
authors.initials: M
authors.lastname: Mochida-Matsubara
authors.forename: Kimie
authors.initials: K
authors.lastname: Ohyama
mesh_terms: D000328:Adult; D002508:Cephalometry; D002648:Child; D003768:Dental Occlusion, Centric; D004576:Electromyography; D005260:Female; D006801:Humans; D008297:Male; D008310:Malocclusion / Q000628:therapy*; D008334:Mandible / Q000502:physiology; D019186:Mandibular Advancement; D008410:Masticatory Muscles / Q000502:physiology*; D009971:Orthodontics, Corrective; D063173:Retrognathia / Q000601:surgery / Q000628:therapy*; D013705:Temporomandibular Joint Disorders / Q000628:therapy*