Mandibular setback and its effects on speech

Sahoo, Nanda Kishore; Roy, Indranil; Kulkarni, Vishal

doi:10.1016/j.omsc.2018.10.001

Cited by 6 publications

(33 citation statements)

References 12 publications

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“… 2 , 19 , 22 , 24 , 26 To the best of our knowledge, there was no agreement on the effects of orthognathic surgery on speech and voice. 2 , 3 , 19 , 22 , 23 , 26 , 27 …”

Section: Discussionmentioning

confidence: 95%

“… 12 - 14 , 16 , 22 - 24 Nevertheless, studies examining the outcome of speech after BSSO with mandibular setback are limited, and contained contrary results. 2 , 3 , 19 , 26 Moreover, the patient population and the surgical management in the above-mentioned studies were quite heterogeneous, without any attention to the type of surgery performed. 2 , 19 , 22 , 24 , 26 To the best of our knowledge, there was no agreement on the effects of orthognathic surgery on speech and voice.…”

Section: Discussionmentioning

confidence: 99%

“… 2 , 3 , 19 , 26 Moreover, the patient population and the surgical management in the above-mentioned studies were quite heterogeneous, without any attention to the type of surgery performed. 2 , 19 , 22 , 24 , 26 To the best of our knowledge, there was no agreement on the effects of orthognathic surgery on speech and voice. 2 , 3 , 19 , 22 , 23 , 26 , 27 …”

Section: Discussionmentioning

confidence: 99%

“…Considering our research inclusion and exclusion criteria, the sample size was 20 patients, which was more than all similar studies, including Lee et al 9 (nine class III patients), Sahoo et al 26 (ten class III patients), Mishima et al 3 (16 class III patients) and Ahn et al 2 (eight class III patients).…”

Section: Discussionmentioning

confidence: 99%

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The Effect of Bimaxillary Orthognathic Surgery on Nasalance, Articulation Errors, and Speech Intelligibility in Skeletal Class III Deformity Patients

Ghaemi

Emrani

Labafchi

et al. 2021

wjps

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BACKGROUND We aimed to detect the changes in nasalance, articulation errors, and speech intelligibility after bimaxillary orthognathic surgery in skeletal class III patients. METHODS This double-blinded before and after quasi-experimental study was conducted in the Department of Maxillofacial Surgery, Qaem Hospital, Mashhad, Iran from Mar 2019 to Apr 2020. The main intervention was maxillary advancement with LeFort I osteotomy and mandibular setback surgery with bilateral sagittal split osteotomy (BSSO). The nasalance score, speech intelligibility, and articulation errors were evaluated one week preoperatively (T 0 ), 1 and 6 months (T 1 , T 2 ) postoperatively by a speech therapist. The significance level was set at 0.05 using SPSS 21. RESULTS Eleven women (55%) and 9 men (45%) with a mean age of 31.95 ± 4.72 yr were enrolled. The mean maxillomandibular discrepancy was 6.15 ± 1.53 mm. The mean scores of nasalance for the oral, nasal, and oral-nasal sentences were significantly improved postoperatively ( P <0.001). Pre-operative articulation errors of consonants /r/, /z/, /s/ and /sh/ were corrected following the surgery. The percentage of speech intelligibility was significantly increased over time ( P <0.001). CONCLUSION The patients might show a normal articulation pattern and a modified nasalance feature, following maxillary advancement plus mandibular setback surgery.

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“… 2 , 19 , 22 , 24 , 26 To the best of our knowledge, there was no agreement on the effects of orthognathic surgery on speech and voice. 2 , 3 , 19 , 22 , 23 , 26 , 27 …”

Section: Discussionmentioning

confidence: 95%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

The Effect of Bimaxillary Orthognathic Surgery on Nasalance, Articulation Errors, and Speech Intelligibility in Skeletal Class III Deformity Patients

Ghaemi

Emrani

Labafchi

et al. 2021

wjps

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show abstract

“…To the best of our knowledge, few studies have already investigated the impact of mandibular setback surgery on voice characteristics. 1,3,4,6,12 There are several studies over the years reporting the negative effects on speech after BSSO. 1,4,13,14 However, the effect of mandibular setback surgery on the voice characteristics and articulation in nonsyndromic skeletal class 3 patients is still a controversial topic.…”

mentioning

confidence: 99%

The Effect of Bimaxillary Orthognathic Surgery on Voice Characteristics in Skeletal Class 3 Deformity Patients: An Evaluation Using Acoustic Analysis

Emrani¹,

Ghaemi²,

Labafchi³

et al. 2021

Journal of Craniofacial Surgery

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Theaimofthisstudywastoanalyzetheeffectsofbimaxillary 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 AE 4.72 years. The average mandibular setback and maxillary advancement were 3.30 AE 0.86 and 2.85 AE 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 < 0.05). The finding revealed that bimaxillary orthognathic surgery (maxillary advancement and mandibular setback with bilateral sagittal split osteotomy) might reduce the acoustic formant parameters of voice to the normal frequency ranges, in patients with class 3 skeletal deformities. More clinical trials with greater sample sizes and longterm follow-ups are suggested in the future.

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Effect of Mandibular Advancement Surgery on Tongue Length and Height and Its Correlation with Upper Airway Dimensions

Sahoo

Agarwal

Datana

et al. 2020

J. Maxillofac. Oral Surg.

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Mandibular setback and its effects on speech

Cited by 6 publications

References 12 publications

The Effect of Bimaxillary Orthognathic Surgery on Nasalance, Articulation Errors, and Speech Intelligibility in Skeletal Class III Deformity Patients

The Effect of Bimaxillary Orthognathic Surgery on Nasalance, Articulation Errors, and Speech Intelligibility in Skeletal Class III Deformity Patients

The Effect of Bimaxillary Orthognathic Surgery on Voice Characteristics in Skeletal Class 3 Deformity Patients: An Evaluation Using Acoustic Analysis

Effect of Mandibular Advancement Surgery on Tongue Length and Height and Its Correlation with Upper Airway Dimensions

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