title: [Study of congenital velopharyngeal insufficiency and hypernasality].
abstract: OBJECTIVE
  To evaluate 27 congenital veloparyngeal insufficiency(CVPI) subjects and 6 normal articulation subjects with airflow pressure techniques.
  
  
  METHODS
  A compare analysis was performed in two groups (CVPI subjects and normal articulation subjects) during speech production of /hemper/ and /papa/.
  
  
  RESULTS
  There wasn't statistical significance between two groups in oral air pressure and velopharyngeal orifice areas, however, CVPI group differed significant in nasal airflow on the articulation of /hemper/ and /papa/.
  
  
  CONCLUSIONS
  When the degree of CVPI subject's VP opening was small, hypernasality appeared to be related to duration of the opening-closing movements.
authors.affiliation: Cranilfacial Center, School of Stomatology, Shanghai Second Medical University, Shanghai 200011, China.
authors.forename: G
authors.initials: G
authors.lastname: Wang
authors.forename: W
authors.initials: W
authors.lastname: Yuan
authors.forename: J
authors.initials: J
authors.lastname: Jiang
mesh_terms: D000293:Adolescent; D000328:Adult; D000403:Airway Resistance / Q000502:physiology; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D008297:Male; D009055:Mouth / Q000503:physiopathology; D009666:Nose / Q000503:physiopathology; D010614:Pharynx / Q000503:physiopathology; D010700:Phonetics; D013068:Speech Production Measurement; D014681:Velopharyngeal Insufficiency / Q000151:congenital / Q000503:physiopathology*; D014832:Voice Disorders / Q000503:physiopathology*