Lowry G, Rezende Silva E, Matthews J, Shoji A, Turvey T, Blakey G, Zajac D, Mielke J, Jacox LA. A Lingual Ultrasound Study of Speech in Patients With Cleft Lip and Palate Following Orthognathic Surgery. Orthod Craniofac Res. 2025 Apr 11. doi: 10.1111/ocr.12926.
This study evaluated the effects of orthognathic surgery on speech of Class III (‘underbite’) patients with repaired cleft lip and palate (CLP) through ultrasound imaging, aerodynamic assessment and articulatory analyses before and after surgery to evaluate how surgery impacts articulation, velopharyngeal (VP) function and hypernasality.