Orthognathic Speech Pathology: Phonetic Contrasts of Patients With Dental Discrepancies Pre- and Post-Treatment Analyses
Recruiting now
Conditions studied: Dentofacial Abnormalities, Dentofacial Deformities, Dentofacial Anomalies, Including Malocclusion, Malocclusion, Malocclusion in Children, Dentofacial Disharmony, Skeletal Malocclusion, Skeletal Malformation, Speech Sound Disorder, Speech Disorders
In brief
The investigators are studying how speech is effected by jaw and tooth position in jaw surgery patients. Eighty percent of our jaw surgery patients have speech pathologies, compared to five percent of the general population, but speech pathologists do not understand why. The investigators hypothesize that open bites and underbites prevent most patients from being able to pronounce words normally and surgical correction will lead to improvement in speech. Patients will be audio recorded speaking and patients' tongue gestures ultrasound recorded before and after their jaw surgeries to observe what changes occur in their speech and tongue movements.
Key facts
- Study ID
- NCT04117360
- Run by
- University of North Carolina, Chapel Hill
- People needed
- 180
- Starts
- 2019-09-11
- Expected to finish
- 2028-03-01
- Last updated by the study team
- 2026-06-12
Who can join
Age: 15 and older, up to 40. Sex: any. Healthy volunteers: not accepted.
You may qualify if…
- Jaw surgery patient at UNC with a skeletal open bite, underbite or overjet greater than 5mm.
- Age 15-40 years
You may not qualify if…
- Hearing loss
- Learned English as a second language
- Significant regional accent, as characterized by a speech pathologist
- Developmental delay, performing several grade levels below age bracket
- history of craniofacial disorder
- genetic syndrome associated with known craniofacial presentation
- history of craniofacial trauma
- history of prior craniofacial surgery (excluding extractions and dental procedures)
- Jaw surgery without fixed orthodontic appliances
Where it is running
- University of North Carolina — Chapel Hill, North Carolina, United States (enrolling)
Full record on ClinicalTrials.gov
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