Orthognathic Speech Pathology: Phonetic Contrasts of Patients With Dentofacial Discrepancies With Pre- and Post-Treatment Analyses
University of North Carolina, Chapel Hill
Summary
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.
Description
Purpose: The investigators are studying how phoneme distortion is effected by jaw disproportions in dentofacial disharmony (DFD) patients and whether speech improves after orthognathic surgery and orthodontic treatment. Spectral moment and tongue gestural analysis are being used to mechanistically determine how jaw position effects speech. The investigators hypothesize that skeletal open and underbites contribute to phoneme distortion and tongue gestural changes that improve following surgical correction of jaw position. All DFD patients are already seeking treatment from orthodontics and oral…
Eligibility
- Age range
- 15–40 years
- Sex
- All
- Healthy volunteers
- No
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 fi…
Interventions
- OtherOrthognathic surgery and Orthodontics
This study is observational. All subjects identified to participate will be undergoing orthognathic jaw surgery and orthodontic treatment.
Location
- University of North CarolinaChapel Hill, North Carolina