The Effect of Bimaxillary Orthognathic Surgery on Voice Characteristics in Skeletal Class 3 Deformity Patients: An Evaluation Using Acoustic Analysis
| Autor: | Sahand Samieirad, Hamide Ghaemi, Erfan Emrani, Ali Labafchi |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Adult
Male Cephalometry medicine.medical_treatment Osteotomy Sagittal Split Ramus Orthognathic surgery Sagittal split osteotomy Mandible Osteotomy behavioral disciplines and activities Statistical significance Deformity medicine Maxilla Humans Osteotomy Le Fort Orthodontics business.industry Orthognathic Surgical Procedures Orthognathic Surgery General Medicine Acoustics Skeletal class Formant Malocclusion Angle Class III Otorhinolaryngology Sample size determination Surgery Female medicine.symptom business Follow-Up Studies |
| Zdroj: | The Journal of craniofacial surgery. 32(6) |
| ISSN: | 1536-3732 |
| Popis: | The aim of this study was to analyze the effects of bimaxillary orthognathic surgery on the acoustic voice characteristics of skeletal class 3 patients. All healthy nonsyndromic patients with Class 3 deformity who were eligible for bimaxillary orthognathic surgery, were included in this before and after quasi-experimental study. This experiment's main intervention was mandibular setback surgery by bilateral sagittal split osteotomy plus maxillary advancement using LeFort 1 osteotomy. Age, sex, and intraoperative jaw movements were recorded. Acoustic analysis of voice samples (vowels /a/ and /i/) was performed with Praat software as outcome variables. The formant frequencies (F0, F1, F2, and F3) of these vowels were extracted 1 week preoperatively (T0), 1 and 6 months (T1, T2) postoperatively by a speech therapist. The significance level was set at 0.05 using SPSS 19. The study sample comprised 20 patients including 11 women (55%) and 9 men (45%) with a mean age of 31.95 ± 4.72 years. The average mandibular setback and maxillary advancement were 3.30 ± 0.86 and 2.85 ± 0.74 mm, respectively. The fundamental frequency (F0) and the first, second, and third formants (F1, F2, F3) of vowels /i/ and /a/ were significantly decreased over time intervals, postoperatively (P |
| Databáze: | OpenAIRE |
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