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Orthognathic Speech Pathology: Phonetic Contrasts of Patients With Dental Discrepancies Pre- and Post-Treatment Analyses
Orthognathic Speech Pathology: Phonetic Contrasts of Patients With Dentofacial Discrepancies With Pre- and Post-Treatment Analyses
Who can join
Ages 15 to 40 · All sexes
Full eligibility criteria
Inclusion Criteria: * Jaw surgery patient at UNC with a skeletal open bite, underbite or overjet greater than 5mm. * Age 15-40 years Exclusion Criteria: * 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
About the study
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.
What is being tested
- Orthognathic surgery and Orthodontics (other)
Sponsor: University of North Carolina, Chapel Hill · Participants: 180 · Started: Sep 11, 2019
Contact the study team
- Laura A Jacox, PhD, DMD, MS · Phone: 847- 702-0988
Official record on ClinicalTrials.gov — NCT04117360
Locations in the U.S.
| North Carolina | University of North Carolina, Chapel Hill |
Conditions
From ClinicalTrials.gov, data retrieved Sep 30, 2026. Each study sets its own eligibility; the study team decides who can join.