The impact of maxillary advancement on nasality in a non-cleft population

Perceptual and objective characteristics of nasality were examined in 14 non-cleft patients prior to orthognathic surgery involving maxillary advancement. Perceptual assessments pre-surgery revealed three patients as hyponasal and two as mildly hypernasal. Instrumental assessments confirmed hyponasality in only one patient. Post-operative data was available for ten patients at six months following surgery. Four patients demonstrated significant increases in objective measures of nasality. Only two of these four patients were identified as having corresponding increases in perceived nasality, one from normal nasality to hypernasality and one from hyponasality to normal nasality. Overall, the results confirmed that in the non-cleft population nasality can be affected as a result of malocclusion. Similarly surgery involving maxillary advancement can lead to increased nasal resonance. However, this was more frequently seen at a subclinical level in the present group. The present study highlights that not all patients undergoing maxillary advancement demonstrate clinical or subclinical changes in!nasality post-surgery, and that individual variability is high

Audiology · Nasality · Population · Subclinical infection · Cleft Lip and Palate Research · Dentistry · Medicine · Internal Medicine · Orthodontics

• Clinical significance

  Neil S Jacobson, Paula Truax•Journal of Consulting and…•1991

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