title: [Effect of dental arch length decrease during orthodontic treatment in the upper airway development. A review].
abstract: BACKGROUND
  A possible relation between an upper airway space decrease and the development of obstructive sleep apnea syndrom explains the importance to know the effect of the modification of dental arch length on the upper airway during orthodontic treatment.
  
  
  OBJECTIVE
  The aim of this article is to expose recent knowledge about upper airway development and dental arch length decrease factors, to determine the influence of this decrease on upper airway development.
  
  
  METHODS
  A review was done to determine the upper airway normal development, to define dental arch to specify if an ideal position of dental arch on apical base exists. All of the length dental arch decrease factors during orthodontic treatment (dental extraction, dental agenesis and dental malpositions) and their upper airway resounding were searched.
  
  
  RESULTS
  Some authors found a diminution of upper airway space after premolars extractions while others didn't found this diminution after extractions premolars when incisor retraction is finished. A decrease of transversal maxillary diameter and nasal cavity may be due to absence of permanent teeth.
  
  
  CONCLUSIONS
  The effect of dental arch length decrease during orthodontic treatment in the upper airway development was not scientifically proved. However we had to be vigilant and adapt our orthodontic treatment case by case to avoid an upper airway modification.
authors.affiliation: 49 rue Jeanne-d'Arc, 76000 Rouen, France.
authors.forename: Stéphanie
authors.initials: S
authors.lastname: Haddad
authors.affiliation: 49 rue Jeanne-d'Arc, 76000 Rouen, France.
authors.forename: Jean-Baptiste
authors.initials: JB
authors.lastname: Kerbrat
authors.affiliation: Service de chirurgie maxillo-faciale et stomatologie, Hôpital universitaire Pitié Salpêtrière, 47-83 boulevard de l'Hôpital, 75651 Paris cedex 13, France.
authors.forename: Thomas
authors.initials: T
authors.lastname: Schouman
authors.affiliation: Service de chirurgie maxillo-faciale et stomatologie, Hôpital universitaire Pitié Salpêtrière, 47-83 boulevard de l'Hôpital, 75651 Paris cedex 13, France.
authors.forename: Patrick
authors.initials: P
authors.lastname: Goudot
mesh_terms: D000328:Adult; D002648:Child; D003724:Dental Arch / Q000254:growth & development / Q000473:pathology* / Q000601:surgery*; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D009971:Orthodontics, Corrective / Q000009:adverse effects / Q000379:methods; D012137:Respiratory System / Q000254:growth & development* / Q000503:physiopathology; D012891:Sleep Apnea Syndromes / Q000209:etiology; D014061:Tongue Habits / Q000009:adverse effects; D014081:Tooth Extraction / Q000009:adverse effects / Q000379:methods