Cleft lip and palate are common congenital anomalies with significant implications for feeding, swallowing, and speech. If a cleft palate goes unrepaired, a child will have difficulty distinguishing nasal and oral sounds. Even following cleft palate repair, approximately 20 to 30% of nonsyndromic children have persistent hypernasal speech. This often occurs due to velopharyngeal dysfunction (VPD), a term describing failure of the soft palate and pharyngeal walls to seal the nasopharynx from the oropharynx during oral consonant production. The gold standard for diagnosis is perceptual examination by a trained speech pathologist, although additional diagnostic tools such as nasendoscopy are often used. Treatment options for VPD range from speech therapy to revision palatoplasty, sphincter pharyngoplasty, pharyngeal flap, and pharyngeal wall augmentation. Palatal prosthetics may also be considered for children who are not surgical candidates. Further research is needed to improve selection of diagnostic and treatment interventions and optimize speech outcomes for children with a history of oral cleft.
This review contains 1 figure, 3 videos, and 58 references.
Key words: Cleft lip and palate, hypernasal resonance, levator veli palatine, nasal emission, nasendoscopy, palatoplasty, pharyngeal flap, posterior pharyngeal wall augmentation, sphincter pharyngoplasty, velopharyngeal dysfunction
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