The effect of infrahyoid muscle sectioning on hyoid bone position and oropharyngeal air column volume

2014 ◽  
Vol 125 (6) ◽  
pp. 1480-1484 ◽  
Author(s):  
Osman T. Güzeldir ◽  
Utku Aydil ◽  
Yusuf Kizil ◽  
Ilker Akyildiz ◽  
Ahmet Köybaşioğlu
Keyword(s):  
Hyoid Bone ◽  
Column Volume ◽  
Air Column

scholarly journals Orthodontic Treatment and Craniocervical Posture in Patients with Temporomandibular Disorders: An Observational Study

2021 ◽  
Vol 18 (6) ◽  
pp. 3295
Author(s):  
Maria Paço ◽  
José Alberto Duarte ◽  
Teresa Pinho
Keyword(s):  
Temporomandibular Disorders ◽  
Orthodontic Treatment ◽  
Hyoid Bone ◽  
Craniofacial Morphology ◽  
P Value ◽  
Skeletal Class ◽  
Treatment Data ◽  
Phase Data ◽  
Condylar Displacement ◽  
Clinical Records

Orthodontic treatment acts through the application of forces and/or by stimulating and redirecting the functional forces within the craniofacial complex. Considering the interrelationship between craniomandibular and craniocervical systems, this intervention may alter craniocervical posture. Thus, our aim is to (a) compare craniocervical posture, hyoid bone position, and craniofacial morphology before, after, and also in the contention phase at least one year after the orthodontic treatment, in patients with temporomandibular disorders and (b) to verify whether the presence of condylar displacement, the skeletal class, or the facial biotype interferes with the abovementioned outcomes. To do so an observational, analytical, longitudinal, and retrospective design study was carried out. A non-probabilistic convenience sampling method was applied. The sample consisted of clinical records of patients diagnosed with temporomandibular disorders in order to compare pre-orthodontic treatment with post-orthodontic treatment (n = 42) and contention phase data (n = 26). A cephalometric analysis of several variables was performed. The p-value was set as 0.05. When the pre- and post-orthodontic treatment data were analyzed, there were statistically significant changes in variables concerning craniocervical posture (CV angle, C0-C1, and AA-PNS) and also concerning hyoid bone position (C3-Rgn). When pre- and post-orthodontic treatment and contention phase data were analyzed the variables concerning craniocervical posture (C0-C1, CVT/Ver, NSL/OPT, NSL/CVT, NSL/Ver; OPT/CVT, OPT/Ver) and facial biotype had statistically significant changes. This allowed us to conclude that in the sample studied, there were significant differences regarding hyoid bone position (pre- versus post-orthodontic treatment) and craniocervical posture (pre- versus post-orthodontic versus contention), with the craniocervical posture being prone to return to basal values. The presence of condylar displacement was found to significantly increase the H-H1 distance in the three moments of evaluation. Facial biotype was found to significantly increase the NSL/Ver angle on hypodivergent compared to hyperdivergent in the contention phase.

scholarly journals A complex fracture of the hyoid bone and the larynx after a bicycle accident - case report and review of literature

2021 ◽  
pp. 105922
Author(s):  
Lava Taha ◽  
Matti Sievert ◽  
Felix Eisenhut ◽  
Heinrich Iro ◽  
Maximilian Traxdorf ◽  
...  
Keyword(s):  
Case Report ◽  
Hyoid Bone ◽  
Review Of Literature ◽  
Bicycle Accident ◽  
Complex Fracture ◽  
Accident Case

scholarly journals Developmental features and predicting airway failure risk in critically ill children with mandibular hypoplasia using 3D computational tomographic analysis

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Doo-Hwan Kim ◽  
Eunseo Gwon ◽  
Junheok Ock ◽  
Jong-Woo Choi ◽  
Jee Ho Lee ◽  
...  
Keyword(s):  
Risk Factors ◽  
Difficult Airway ◽  
Hyoid Bone ◽  
Three Dimensional ◽  
Upper Airway ◽  
Critically Ill Children ◽  
Healthy Controls ◽  
Mandibular Hypoplasia ◽  
Tongue Position ◽  
Developmental Features

AbstractIn children with mandibular hypoplasia, airway management is challenging. However, detailed cephalometric assessment data for this population are sparse. The aim of this study was to find risk factors for predicting difficult airways in children with mandibular hypoplasia, and compare upper airway anatomical differences using three-dimensional computed tomography (3D CT) between children with mandibular hypoplasia and demographically matched healthy controls. There were significant discrepancies in relative tongue position (P < 0.01) and anterior distance of the hyoid bone (P < 0.01) between patients with mandibular hypoplasia and healthy controls. All mandibular measures were significantly different between the two groups, except for the height of the ramus of the mandible. After adjusting for age and sex, the anterior distance of hyoid bone and inferior pogonial angle were significantly associated with a difficult airway (P = 0.01 and P = 0.02). Quantitative analysis of upper airway structures revealed significant discrepancies, including relative tongue position, hyoid distance, and mandible measures between patients with mandibular hypoplasia and healthy controls. The anterior distance of the hyoid bone and inferior pogonial angle may be risk factors for a difficult airway in patients with mandibular hypoplasia.

scholarly journals Connection between Anomalous Zonal Activities of the South Asian High and Eurasian Summer Climate Anomalies

2016 ◽  
Vol 29 (22) ◽  
pp. 8249-8267 ◽  
Author(s):  
Jian Shi ◽  
Weihong Qian
Keyword(s):  
South Asian ◽  
Surface Air Temperature ◽  
Northern China ◽  
Boreal Summer ◽  
South Asian High ◽  
The South ◽  
Climate Anomalies ◽  
Precipitation Anomalies ◽  
Air Column ◽  
Air Temperature Anomalies

Abstract Using the daily mean anomalies of atmospheric variables from the NCEP Reanalysis-1 (NCEP R1), this study reveals the connection between anomalous zonal activities of the South Asian high (SAH) and Eurasian climate anomalies in boreal summer. An analysis of variance identifies two major domains with larger geopotential height variability located in the eastern and western flanks of the SAH at around 100 and 150 hPa, respectively. For both eastern and western domains, extreme events are selected during 1981–2014 when normalized height anomalies are greater than 1.0 (less than −1.0) standard deviation for at least 10 consecutive days. Based on these events, four SAH modes that include strong and weak Tibetan modes (STM and WTM, respectively) and strong and weak Iranian modes (SIM and WIM, respectively) are defined to depict the zonal SAH features. The positive composite in the eastern (western) domain indicates the STM (SIM) manifests a robust wavelike pattern with an anomalous low at 150 hPa, and surface cold and wet anomalies over Mongolia and northern China (Kazakhstan and western Siberia) are surrounded by three anomalous highs at 150 hPa and surface warm and dry anomalies over Eurasia. Opposite distributions are also evident in the negative composites of the two domains (WTM and WIM). The surface air temperature anomalies are the downward extension of an anomalous air column aloft while the precipitation anomalies are directly associated with the height anomalies above the air column.

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