Changes in the hyoid bone, tongue, and oropharyngeal airway space after mandibular setback surgery evaluated by cone-beam computed tomography

Kim, Seon-Hye; Choi, Sung-Kwon

doi:10.1186/s40902-020-00271-6

Cited by 18 publications

(21 citation statements)

References 28 publications

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“…Additionally, alternations of hyoid bone position after orthognathic operations have been reported. The hyoid position moves upward after mandibular advancement surgery and downward after mandibular setback surgery [ 12 , 13 ]. Mortazavi et al revealed that in skeletal class III with mandibular prognathism, the hyoid bone is positioned more anteriorly than in class I and II.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of the position and morphology of tongue and hyoid bone in skeletal Class II malocclusion based on cone beam computed tomography

et al. 2021

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Background The aim of the study was to analyze the morphology and position of the tongue and hyoid bone in skeletal Class II patients with different vertical growth patterns by cone beam computed tomography in comparison to skeletal Class I patients. Methods Ninety subjects with malocclusion were divided into skeletal Class II and Class I groups by ANB angles. Based on different vertical growth patterns, subjects in each group were divided into 3 subgroups: high-angle group (MP-FH ≥ 32.0°), average-angle group (22.0° ≤ MP-FH < 32°) and low-angle group (MP-FH < 22°). The position and morphology of the tongue and hyoid bone were evaluated in the cone beam computed tomography images. The independent Student’s t‐test was used to compare the position and morphology of the tongue and hyoid bone between skeletal Class I and Class II groups. One-way analysis of variance (ANOVA) was used to compare the measurement indexes of different vertical facial patterns in each group. Results Patients in skeletal Class II group had lower tongue posture, and the tongue body was smaller than that of those in the Class I group (P < 0.05). The position of the hyoid bone was lower in the skeletal Class II group than in Class I group (P < 0.05). The tongue length and H-Me in the skeletal Class I group with a low angle were significantly larger than those with an average angle and high angle (P < 0.05). There was no significant difference in the position or morphology of the tongue and hyoid bone in the skeletal Class II group with different vertical facial patterns (P > 0.05). Conclusion Patients with skeletal Class II malocclusion have lower tongue posture, a smaller tongue body, and greater occurrence of posterior inferior hyoid bone position than skeletal Class I patients. The length of the mandibular body in skeletal Class I patients with a horizontal growth type is longer. The position and morphology of the tongue and hyoid bone were not greatly affected by vertical facial development in skeletal Class II patients.

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Section: Discussionmentioning

confidence: 99%

Evaluation of the position and morphology of tongue and hyoid bone in skeletal Class II malocclusion based on cone beam computed tomography

et al. 2021

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“…las condiciones faciales a nivel de tejidos blandos y tejidos duros. 12,13 Se ha indicado 14 que la posición del hueso hioides no es constante, y que depende de las relaciones anteroposteriores maxilomandibulares. En la presente investigación se observó una correlación significativa entre la posición anteroposterior de la mandíbula, el ángulo mandibular y la posición del hueso hioides; en los sujetos clase II facial se relacionó la posición retrognática mandibular con el aumento en el ángulo del plano mandibular y aumento en la distancia del ángulo mandibular al hueso hioides en comparación con lo observado en los sujetos clase III facial.…”

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Posición esqueletal aplicada a la estética y rejuvenecimiento del tercio inferior facial y cervical

Ravelo¹,

Haidar²,

Huentequeo-Molina³

et al. 2021

Lat Am J Oral Maxillofac Surgi

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“…On the other hand, X-ray [ 18 , 19 , 20 ] and CT [ 21 , 22 , 23 , 24 , 25 ] systems are cheaper than MRI, they have a reasonable resolution, and they have many applications as well. X-ray is used for tongue contour extraction [ 26 , 27 ]; it is also used for tongue contour image synthesis to create articulation copy [ 28 ] or combining physiological models to fit X-ray images.…”

Section: Introductionmentioning

confidence: 99%

Tongue Contour Tracking and Segmentation in Lingual Ultrasound for Speech Recognition: A Review

et al. 2022

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Lingual ultrasound imaging is essential in linguistic research and speech recognition. It has been used widely in different applications as visual feedback to enhance language learning for non-native speakers, study speech-related disorders and remediation, articulation research and analysis, swallowing study, tongue 3D modelling, and silent speech interface. This article provides a comparative analysis and review based on quantitative and qualitative criteria of the two main streams of tongue contour segmentation from ultrasound images. The first stream utilizes traditional computer vision and image processing algorithms for tongue segmentation. The second stream uses machine and deep learning algorithms for tongue segmentation. The results show that tongue tracking using machine learning-based techniques is superior to traditional techniques, considering the performance and algorithm generalization ability. Meanwhile, traditional techniques are helpful for implementing interactive image segmentation to extract valuable features during training and postprocessing. We recommend using a hybrid approach to combine machine learning and traditional techniques to implement a real-time tongue segmentation tool.

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Changes in the hyoid bone, tongue, and oropharyngeal airway space after mandibular setback surgery evaluated by cone-beam computed tomography

Cited by 18 publications

References 28 publications

Evaluation of the position and morphology of tongue and hyoid bone in skeletal Class II malocclusion based on cone beam computed tomography

Evaluation of the position and morphology of tongue and hyoid bone in skeletal Class II malocclusion based on cone beam computed tomography

Posición esqueletal aplicada a la estética y rejuvenecimiento del tercio inferior facial y cervical

Tongue Contour Tracking and Segmentation in Lingual Ultrasound for Speech Recognition: A Review

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