Variations in Function and Vocal Acoustic Characteristics After Orthognathic Surgery: Preliminary Results
Pesqui. bras. odontopediatria clín. integr
; 23: e210238, 2023. tab, graf
Article
in En
| LILACS, BBO
| ID: biblio-1448791
Responsible library:
BR1264.1
ABSTRACT
ABSTRACT Objective:
To determine the effects of orthognathic surgery on oral function and vocal quality in order to assess the need for speech therapy after surgery. Material andMethods:
Thirty-seven patients scheduled for mono-jaw surgery, specifically maxillary (G115 patients), mandibular advancement (G210 patients) or mandibular set-back (G312 patients), were recruited for this prospective cohort study. Evaluation of oral functions, video recordings of speech articulation and audio recordings of voice were obtained before surgery (T0), and at 1 (T1) and 6 months (T2) after surgery. Spectrographic analysis and self-evaluation questionnaire regarding the vocal performance (VAPP) were performed. Both qualitative and quantitative statistical analysis was performed, mainly using generalized linear models for dichotomous data (p<0.05).Results:
The formant frequencies (F1 and F2) of the main vowels vary after orthognathic surgery according to the type of surgery. Before surgery, 84% of patients analyzed showed difficulties in breathing and positioning the tongue both at rest and swallowing. Thanks to surgical correction of the malocclusion, the major part of these issues were resolved within 6 months. In 25% of cases, a change in the voice and/or articulation had occurred.Conclusion:
Vocality improves after orthognathic surgery and it changes in relation to the type of surgery. However, vocality did not normalize completely. Speech assessment should be considered after surgery in order to offer adequate speech therapy if necessary.Key words
Full text:
1
Index:
LILACS
Main subject:
Postoperative Complications
/
Speech Acoustics
/
Voice Quality
/
Orthognathic Surgery
Type of study:
Diagnostic_studies
/
Observational_studies
/
Prognostic_studies
/
Qualitative_research
Limits:
Adult
/
Female
/
Humans
/
Male
Language:
En
Journal:
Pesqui. bras. odontopediatria clín. integr
Journal subject:
ODONTOLOGIA
Year:
2023
Type:
Article