Speech Articulatory Characteristics of Individuals With Dentofacial Deformity

Prado, Daniela Galvão de Almeida; Filho, Hugo Nary; Berretin-Felix, Giédre; Brasolotto, Alcione Ghedini

doi:10.1097/scs.0000000000001913

Cited by 7 publications

(4 citation statements)

References 22 publications

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“…In total, 60 men aged 18–40 years [3, 12], 20 with Angle’s class III skeletal malocclusion (mean = 26.9 years, SD = 3.21) and 40 with Angle’s class I malocclusion (mean = 23.3 years, SD = 2.71) were included in this study.…”

Section: Methodsmentioning

confidence: 99%

“…Class III malocclusion affects the shape of the oral cavity, and thus, patients with class III malocclusion are expected to show differences in the structure of the vocal tract when compared to people with normal occlusion [2]. Those structural differences may affect voice and speech parameters because the tongue, which is the main articulator of speech, may undergo adaptations and impact the function of the hyoid-larynx complex during speech production [2, 3].…”

Section: Introductionmentioning

confidence: 99%

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Acoustic Analysis of Voice and Speech in Men with Skeletal Class III Malocclusion: A Pilot Study

Viegas

Viegas²,

Guimarães³

et al. 2020

Folia Phoniatr Logop

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Objectives: To assess the fundamental (f0) and first third formant (F1, F2, F3) frequencies of the 7 oral vowels of Brazilian Portuguese in men with skeletal class III malocclusion and to compare these measures with a control group of individuals with Angle’s class I. Methods: Sixty men aged 18–40 years, 20 with Angle’s class III skeletal malocclusion and 40 with Angle’s class I malocclusion were selected by speech therapists and dentists. The speech signals were obtained from sustained vowels, and the values of f0 and frequencies of F1, F2 and F3 were estimated. The differences were verified through Student’s t test, and the effect size calculation was performed. Results: In the class III group, more acute f0 values were observed in all vowels, higher values of F1 in the vowels [a] and [ε] and in F2 in the vowels [a], [e] and [i] and lower F1 and F3 values of the vowel [u]. Conclusion: More acute f0 values were found in all vowels investigated in the class III group, which showed a higher laryngeal position in the production of these sounds. The frequencies of the first 3 formants showed punctual differences, with higher values of F1 in the vowels [a] and [ε] and of F2 in [a], [e] and [i], and lower values of F1 and F3 in the vowel [u] in the experimental group. Thus, it is concluded that the fundamental frequency of the voice was the main parameter that differentiated the studied group from the control.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Acoustic Analysis of Voice and Speech in Men with Skeletal Class III Malocclusion: A Pilot Study

Viegas

Viegas²,

Guimarães³

et al. 2020

Folia Phoniatr Logop

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“…Skeletal mandibular hypoplasia (SMH), presenting with small mandibular deformity, results in an unfavorable facial profile ( Hamid and Asad, 2003 ). In addition to affecting appearance, chewing, and pronunciation ( de Almeida Prado et al., 2015 , Maeda et al., 2008 ), severe SMH can cause narrowing of the pharyngeal airways, which results in obstructive sleep apnea syndrome (OSAS). OSAS increases the risks of cardiovascular disease, cerebrovascular events, depression, diabetes, and cognitive impairment, leading to poor life quality ( Bibbins-Domingo et al., 2017 , Gottlieb et al., 2010 , Kendzerska et al., 2014 , Peppard et al., 2006 , Yaggi et al., 2005 ).…”

Section: Introductionmentioning

confidence: 99%

BMAL1 Deficiency Contributes to Mandibular Dysplasia by Upregulating MMP3

et al. 2018

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SummarySkeletal mandibular hypoplasia (SMH), one of the common types of craniofacial deformities, seriously affects appearance, chewing, pronunciation, and breathing. Moreover, SMH is prone to inducing obstructive sleep apnea syndrome. We found that brain and muscle ARNT-like 1 (BMAL1), the core component of the molecular circadian oscillator, was significantly decreased in mandibles of juvenile SMH patients. Accordingly, SMH was observed in circadian-rhythm-disrupted or BMAL1-deficient mice. RNA sequencing and protein chip analyses suggested that matrix metallopeptidase 3 (MMP3) is the potential target of BMAL1. Interestingly, in juvenile SMH patients, we observed that MMP3 was obviously increased. Consistently, MMP3 was upregulated during the whole growth period of 3–10 weeks in Bmal1−/− mice. Given these findings, we set out to characterize the underlying mechanism and found BMAL1 deficiency enhanced Mmp3 transcription through activating p65 phosphorylation. Together, our results provide insight into the mechanism by which BMAL1 is implicated in the pathogenesis of SMH.

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“…First, our study sample comprised patients with lateral mandibular deviation and class II and class III skeletal abnormalities. The shape of the oral cavity, movement of the tongue and length of the mandible are known to vary between the different types of malocclusion, and these structural differences may affect patients' voices (24,25). Previous studies have reported that individuals with class III malocclusions often encounter difficulty in producing labiodental and lingual-alveolar consonants (26).…”

Section: Discussionmentioning

confidence: 99%

Acoustic features as novel predictors of difficult laryngoscopy in orthognathic surgery: an observational study

Xia¹,

Cao²,

Zhou³

et al. 2021

Ann Transl Med

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Background: The evaluation of the difficult intubation is an important process before anaesthesia. The unanticipated difficult intubation is associated with morbidity and mortality. This study aimed to determine whether acoustic features are valuable as an alternative method to predict difficult laryngoscopy (DL) in patients scheduled to undergo orthognathic surgery. Methods: This study included 225 adult patients who were undergoing elective orthognathic surgery under general anaesthesia with tracheal intubation. Preoperatively, clinical airway evaluation was performed, and the acoustic data were collected. Twelve phonemes {[a], [o], [e], [i], [u], [ü], [ci], [qi], [chi], [le], [ke], and [en]} were recorded, and their formants (f1-f4) and bandwidths (bw1-bw4) were extracted. Difficult laryngoscopy was defined as direct laryngoscopy with a Cormack-Lehane grade of 3 or 4. Univariate and multivariate logistic regression analyses were used to examine the associations between acoustic features and DL. Results: Difficult laryngoscopy was reported in 59/225 (26.2%) patients. The area under the curve (AUC)of the backward stepwise model including en_f2 [odds ratio (OR)

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Speech Articulatory Characteristics of Individuals With Dentofacial Deformity

Abstract: Differences regarding speed and stability of oral and laryngeal DDK were found among individuals with DFD compared with the control group.

Cited by 7 publications

References 22 publications

Acoustic Analysis of Voice and Speech in Men with Skeletal Class III Malocclusion: A Pilot Study

Acoustic Analysis of Voice and Speech in Men with Skeletal Class III Malocclusion: A Pilot Study

BMAL1 Deficiency Contributes to Mandibular Dysplasia by Upregulating MMP3

Acoustic features as novel predictors of difficult laryngoscopy in orthognathic surgery: an observational study

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