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1.
Fa Yi Xue Za Zhi ; 37(1): 15-20, 2021 Feb.
Artigo em Inglês, Chinês | MEDLINE | ID: mdl-33780179

RESUMO

Abstract: Objective To explore the feasibility of the CT image reconstruction of laryngeal cartilage and hyoid bone in adult age estimation using data mining methods. Methods The neck thin slice CT scans of 413 individuals aged 18 to <80 years were collected and divided into test set and train set, randomly. According to grading methods such as TURK et al., all samples were graded comprehensively. The process of thyroid cartilage ossification was divided into 6 stages, the process of cricoid cartilage ossification was divided into 5 stages, and the synosteosis between the greater horn of hyoid and hyoid body was divided into 3 stages. Multiple linear regression model, support vector regression model, and Bayesian ridge regression model were developed for adult age estimation by scikit-learn 0.17 machine learning kit (Python language). Leave-one-out cross-validation and the test set were used to further evaluate performance of the models. Results All indicators were moderately or poorly associated with age. The model with the highest accuracy in male age estimation was the support vector regression model, with a mean absolute error of 8.67 years, much higher than the other two models. The model with the highest accuracy in female adult age estimation was the support vector regression model, with a mean absolute error of 12.69 years, but its accuracy differences with the other two models had no statistical significance. Conclusion Data mining technology can improve the accuracy of adult age estimation, but the accuracy of adult age estimation based on laryngeal cartilage and hyoid bone is still not satisfactory, so it should be combined with other indicators in practice.


Assuntos
Osso Hioide , Cartilagens Laríngeas , Adolescente , Adulto , Teorema de Bayes , Criança , Mineração de Dados , Feminino , Humanos , Osso Hioide/diagnóstico por imagem , Processamento de Imagem Assistida por Computador , Cartilagens Laríngeas/diagnóstico por imagem , Masculino , Tomografia Computadorizada por Raios X
2.
Niger J Clin Pract ; 24(3): 321-328, 2021 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-33723104

RESUMO

Objective: This study investigated the relationship between hyoid position and vertical dental dimensions (overbite), and the influence of gender on the location of this bone. Methods: One hundred and seventy-four standardized lateral cephalometric radiographs were randomly selected from a pool of radiographs of patients seeking orthodontic treatment with ages ranging from 10 to 58 years. The subjects were divided into three groups according to their vertical dental dimensions (overbite) into reduced, normal, and increased overbite groups. The hyoid bone position was determined by four horizontal linear and three vertical linear line measurements. Associations between the position of the bone and different vertical dental patterns were analyzed using ANOVA and Tukey's multiple comparison analysis. Results: There was a progressive increase in the horizontal linear position of the hyoid bone parameters across the groups from the reduced through normal to increase overbite. Similarly, a statistical reduction in the vertical linear positions of the hyoid bone parameters was found across the groups from reduced overbite through normal overbite to increased overbite (P < 0.05). The vertical linear hyoid bone positions were located higher in the male than in female subjects. Tukey's multiple comparison analysis showed a highly statistically significant difference in the vertical linear hyoid bone positions between reduced and normal overbite groups and between reduced and increased overbite groups. Conclusion: The hyoid bone was positioned more antero-inferiorly and more postero-superiorly in subjects with reduced overbite and increased overbite, respectively.


Assuntos
Osso Hioide , Adolescente , Adulto , Cefalometria , Criança , Feminino , Humanos , Osso Hioide/diagnóstico por imagem , Masculino , Pessoa de Meia-Idade , Adulto Jovem
3.
Am J Orthod Dentofacial Orthop ; 159(4): e377-e388, 2021 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-33583695

RESUMO

INTRODUCTION: The purpose of this cross-sectional retrospective study was to evaluate the patterns of pharyngeal airway volume change determined by cervical vertebral maturation (CVM) stage and compare it with that which was characterized by chronological age. Correlations between hyoid bone positions and airway volumes were also examined. METHODS: CVM staging was determined from cone-beam computed tomography scans of 420 white patients aged 9-15 years. Patients were stratified on the basis of sex and skeletal pattern to establish pharyngeal airway volume clusters for each CVM stage. The horizontal and vertical positions of hyoid bones were measured using Hyoidius and Sella. RESULTS: Males had larger pharyngeal airway volumes compared with females. In males, the largest increases in pharyngeal airway volumes occurred at an earlier CVM stage than females. No statistically significant differences in pharyngeal airway volumes were noted in subjects with skeletal Class I, II, and III malocclusion. The hyoid bone in males was more anteriorly and inferiorly positioned compared with females. The Class III group had a further forward position of the hyoid bone than the Class I and II groups. CONCLUSIONS: The patterns of pharyngeal airway change obtained using CVM staging did not correlate well with traditional maturational models for skeletal growth. It implies that chronologic age could be a relatively reliable indicator for the assessment of pharyngeal airway volumes in adolescents, as outlined in part 1 of the present study. Subjects with anteriorly and superiorly positioned hyoid bones exhibited smaller pharyngeal airway volumes, which highlights the role of soft tissue and its influence on airway patency.


Assuntos
Osso Hioide , Má Oclusão de Angle Classe III , Adolescente , Cefalometria , Criança , Tomografia Computadorizada de Feixe Cônico , Estudos Transversais , Feminino , Humanos , Osso Hioide/diagnóstico por imagem , Masculino , Mandíbula , Faringe/diagnóstico por imagem , Estudos Retrospectivos
4.
Am J Orthod Dentofacial Orthop ; 159(2): 148-157, 2021 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-33388197

RESUMO

INTRODUCTION: This study aimed to compare cephalometrically the pharyngeal airway, hyoid bone, and soft palate (SP) changes after Class II malocclusion treatments using Twin-block (TWB) and Forsus Fatigue Resistant Device (FFRD) (3M Unitek Corp, 3M Dental Products, Monrovia, Calif) during the postpeak growth period. METHODS: Forty-two patients with Class II malocclusion treated during the postpeak growth period were randomly and retrospectively included in this study. These patients were divided into 2 treatment groups: TWB and FFRD. The skeletal, dental, pharyngeal airway, hyoid bone position, and SP measurements were obtained from the lateral cephalometric radiographs taken at the beginning and at the end of the treatment. Paired-samples and independent-samples t tests were used for the intragroup and intergroup comparisons, respectively. RESULTS: In the TWB group, the SNB (°), Md1-NB (mm), Md1-NB (°), and McNamara upper and lower pharyngeal airway dimensions significantly increased, whereas the ANB (°), AD1-Ba (mm), AD2-H (mm), adenoidal nasopharyngeal area, and SP angle decreased (P < 0.05). In the FFRD group, the SNB (°), Md1-NB (mm), Md1-NB (°), Ptm-Ba (mm), and McNamara upper airway dimensions significantly increased, whereas the ANB (°), AD2-H (mm), and interincisor angle decreased (P < 0.05). Moreover, there were statistically significant differences in the Md1-NB angles and SP thicknesses between the 2 groups (P < 0.05). CONCLUSIONS: The effects of TWB and FFRD treatment on the airway during the postpeak growth period were similar. However, the FFRD caused a greater mandibular incisor protrusion.


Assuntos
Má Oclusão de Angle Classe II , Aparelhos Ortodônticos Funcionais , Cefalometria , Humanos , Osso Hioide/diagnóstico por imagem , Má Oclusão de Angle Classe II/diagnóstico por imagem , Má Oclusão de Angle Classe II/terapia , Mandíbula/diagnóstico por imagem , Palato Mole/diagnóstico por imagem , Faringe/diagnóstico por imagem , Estudos Retrospectivos
5.
Clin Nucl Med ; 46(1): e49-e50, 2021 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-32956123

RESUMO

Osteoradionecrosis (ORN) is a well-documented complication following radiation treatment for head and neck malignancy. Facial bones, mainly the mandible, laryngeal cartilage, and skull, are frequently involved sites for ORN. A rare site for ORN is the hyoid, with very limited cases described in the literature. Recognition of the imaging pattern of hyoid ORN is critical to avoid misdiagnosis of recurrent disease, prompting early treatment.


Assuntos
Fluordesoxiglucose F18 , Osso Hioide/diagnóstico por imagem , Osteorradionecrose/diagnóstico por imagem , Tomografia Computadorizada com Tomografia por Emissão de Pósitrons , Feminino , Humanos , Osso Hioide/patologia , Masculino , Pessoa de Meia-Idade , Osteorradionecrose/patologia
6.
Swiss Dent J ; 130(10): 768-784, 2020 10 12.
Artigo em Inglês | MEDLINE | ID: mdl-33021766

RESUMO

This review about extraoral anatomy depicted in cone beam computed tomography describes the pharyngocervical region. Large (≥ 8 × 8 cm) field of views of the maxilla and/or mandible will inevita-bly depict the pharyngocervical region that com-prises the posterior upper airway, the pharyngeal part of the digestive tract, as well as the cervical segment of the spine. The latter consists of seven cervical vertebrae (C1-C7) with corresponding distinctive features, i.e., the atlas (C1) and the axis (C2). In addition, cervical vertebrae serve as ref-erences for the vertical position of anatomical structures. For instance, C4 is a typical landmark since it generally denotes the level of the chin, of the body of the hyoid bone, of the base of the epiglottis, and of the bifurcation of the common carotid artery, respectively. The pharynx, which is functionally involved in respiration, deglutition, and vocalization, extends from the lower aspect of the skull base to the esophagus. Anatomically, the pharynx is divided into three segments, i.e. the nasopharynx, the oropharynx, and the laryn-gopharynx. All communicate anteriorly with cor-responding cavities, i.e. the nasal cavities, the oral cavity, and the larynx. Although not directly located within the pharyngocervical region, the hyoid bone and the styloid process are also dis-cussed in this review, since both structures are commonly visible on CBCT images of this region.


Assuntos
Tomografia Computadorizada de Feixe Cônico Espiral , Tomografia Computadorizada de Feixe Cônico , Osso Hioide/diagnóstico por imagem , Mandíbula , Faringe/diagnóstico por imagem
7.
Medicine (Baltimore) ; 99(44): e22246, 2020 Oct 30.
Artigo em Inglês | MEDLINE | ID: mdl-33126297

RESUMO

In this study, micro-CT was used to observe the microscopic anatomy of the hyoid bone, examine the variation of the trabecular bone inside the hyoid bone, and investigate the internal structure of the hyoid bone.A total of 22 hyoid bones were scanned using micro-CT. The changes in the internal bone trabeculae were assessed with 3D reconstructions, and the fine anatomical structure of the hyoid bone was further analyzed.Micro-CT images showed the microstructure of various parts of the hyoid bone. There were significant differences in total volume, bone volume, bone area, bone density, and volume fraction between the body and greater horns of the hyoid bone (P < .05), but no significant differences in the ratio of bone area/volume and bone surface density were found between the body and greater horns of the hyoid bone (P > .05). In addition, significant differences in the trabecular bone measurements, bone trabecular connectivity, and Euler number were found between the body and greater horns of the hyoid bone (P < .05). Other parameters, including bone trabecular thickness, number of trabecular bones, bone trabecular structure model index, and anisotropy of bone trabeculae, did not differ between the body and greater horns of the hyoid bone (P > .05). There was noticeably ossified healing at the joint between the body and greater horns of the hyoid bone.Micro-CT can adequately display the internal structure of the hyoid bone. The identified bone structure may help clarify the physiological function of the hyoid bone. The present findings provide a theoretical basis for further studies aimed at pathological changes due to hyoid injury in clinical and forensic medicine.


Assuntos
Osso Hioide/ultraestrutura , Microtomografia por Raio-X , Anisotropia , Densidade Óssea , Humanos , Osso Hioide/diagnóstico por imagem , Imageamento Tridimensional
8.
S Afr Med J ; 110(5): 400-402, 2020 Apr 29.
Artigo em Inglês | MEDLINE | ID: mdl-32657725

RESUMO

BACKGROUND: Hanging is a common form of self-harm, and emergency care physicians will not infrequently be called upon to manage a survivor.Despite the relative frequency of the injury, there is a paucity of literature on the topic and the spectrum and incidence of associated injuries are poorly described. OBJECTIVES: To review experience with management of victims of hanging at a major trauma centre in South Africa. METHODS: All patients treated by the Pietermaritzburg Metropolitan Trauma Service following a hanging incident between December 2012 and December 2018 were identified from the Hybrid Electronic Medical Registry. Basic demographics were recorded, and the management and outcome of each patient were noted. RESULTS: During the 6-year period under review, a total of 154 patients were seen following a hanging incident. The mean age was 29.4 years. There were 24 females (15.6%) and 130 males (84.4%). The vast majority (n=150; 97.5%) had attempted suicide, and only 4 hangings (2.5%) were accidental. A total of 92 patients (60.9%) had consumed alcohol prior to the incident. There were 23 patients with a Glasgow Coma Score (GCS) <9 (severe traumatic brain injury (TBI)), 14 with a GCS of 9 - 12 (moderate TBI) and 117 with a GCS >12 (mild TBI). A total of 7 patients (4.5%) required intensive care unit admission, and 25 (16.2%) required intubation. The following extracranial injuries were documented on computed tomography scans: hyoid bone fractures (n=2), cervical spine fracture (n=10), mandible fracture (n=4) and oesophageal injury (n=1). Intracranial pathology was evident on 27.0% of scans, with the most common finding being global cerebral ischaemia. The mortality rate was 2.5% (4/154). CONCLUSIONS: Hanging is a common mechanism of self-harm. It is associated with significant injuries and mortality. The acute management of hanging should focus on airway protection followed by detailed imaging of the head and neck. Further work must attempt to include mortuary data on hanging.


Assuntos
Acidentes/estatística & dados numéricos , Asfixia/epidemiologia , Lesões do Pescoço/epidemiologia , Tentativa de Suicídio/estatística & dados numéricos , Adulto , Consumo de Bebidas Alcoólicas/epidemiologia , Isquemia Encefálica/diagnóstico por imagem , Isquemia Encefálica/epidemiologia , Vértebras Cervicais/diagnóstico por imagem , Vértebras Cervicais/lesões , Esôfago/diagnóstico por imagem , Esôfago/lesões , Feminino , Fraturas Ósseas/diagnóstico por imagem , Fraturas Ósseas/epidemiologia , Escala de Coma de Glasgow , Humanos , Osso Hioide/diagnóstico por imagem , Osso Hioide/lesões , Unidades de Terapia Intensiva/estatística & dados numéricos , Intubação Intratraqueal/estatística & dados numéricos , Masculino , Fraturas Mandibulares/diagnóstico por imagem , Fraturas Mandibulares/epidemiologia , Estudos Retrospectivos , Distribuição por Sexo , África do Sul/epidemiologia , Tomografia Computadorizada por Raios X , Centros de Traumatologia
9.
Ann Otol Rhinol Laryngol ; 129(12): 1239-1242, 2020 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-32560593

RESUMO

OBJECTIVE: Thyroglossal duct cysts (TGDCs) are relatively common congenital midline neck masses that are treated with surgical excision. Traditionally these are removed along with any associated tract and the central portion of the hyoid bone through an anterior neck incision. Some patients with TGDCs want to avoid an external neck scar. METHODS: We describe the details of a transoral endoscopic vestibular excision of a TGDC and the associated hyoid bone in an adolescent patient. RESULTS: This novel approach was successful and there were no complications. CONCLUSION: We propose that cervical TGDCs can be safely and completely removed with this approach in appropriately selected patients while avoiding a neck scar.


Assuntos
Osso Hioide/cirurgia , Cirurgia Endoscópica por Orifício Natural/métodos , Procedimentos Cirúrgicos Otorrinolaringológicos/métodos , Cisto Tireoglosso/cirurgia , Adolescente , Endoscopia/métodos , Humanos , Osso Hioide/diagnóstico por imagem , Imagem por Ressonância Magnética , Masculino , Boca , Cisto Tireoglosso/diagnóstico por imagem
11.
Anesthesiology ; 132(4): 839-853, 2020 04.
Artigo em Inglês | MEDLINE | ID: mdl-32044802

RESUMO

BACKGROUND: Interscalene brachial plexus block, the pain relief standard for shoulder surgery, is an invasive technique associated with important complications. The subomohyoid anterior suprascapular block is a potential alternative, but evidence of its comparative analgesic effect is sparse. The authors tested the hypothesis that anterior suprascapular block is noninferior to interscalene block for improving pain control after shoulder surgery. As a secondary objective, the authors evaluated the success of superior trunk (C5-C6 dermatomes) block with suprascapular block. METHODS: In this multicenter double-blind noninferiority randomized trial, 140 patients undergoing shoulder surgery were randomized to either interscalene or anterior suprascapular block with 15 ml of ropivacaine 0.5% and epinephrine. The primary outcome was area under the curve of postoperative visual analog scale pain scores during the first 24 h postoperatively. The 90% CI for the difference (interscalene-suprascapular) was compared against a -4.4-U noninferiority margin. Secondary outcomes included presence of superior trunk blockade, pain scores at individual time points, opioid consumption, time to first analgesic request, opioid-related side-effects, and quality of recovery. RESULTS: A total of 136 patients were included in the analysis. The mean difference (90% CI) in area under the curve of pain scores for the (interscalene-suprascapular) comparison was -0.3 U (-0.8 to 0.12), exceeding the noninferiority margin of -4.4 U and demonstrating noninferiority of suprascapular block. The risk ratio (95% CI) of combined superior trunk (C5-C6 dermatomes) blockade was 0.98 (0.92 to 1.01), excluding any meaningful difference in superior trunk block success rates between the two groups. When differences in other analgesic outcomes existed, they were not clinically important. CONCLUSIONS: The suprascapular block was noninferior to interscalene block with respect to improvement of postoperative pain control, and also for blockade of the superior trunk. These findings suggest that the suprascapular block consistently blocks the superior trunk and qualify it as an effective interscalene block alternative.


Assuntos
Artroscopia/métodos , Bloqueio do Plexo Braquial/métodos , Osso Hioide/diagnóstico por imagem , Medição da Dor/métodos , Ombro/diagnóstico por imagem , Ombro/cirurgia , Adulto , Artroscopia/efeitos adversos , Método Duplo-Cego , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Medição da Dor/efeitos dos fármacos
13.
J Stomatol Oral Maxillofac Surg ; 121(4): 357-362, 2020 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-31499229

RESUMO

AIM: The aim of the study was to investigate hyoid bone anomalies in patients with Pierre Robin sequence (PRS) compared to the control group, using computed tomography (CT) examination and three-dimensional reconstruction of the hyoid bone and mandible. METHODS: A retrospective study was performed of patients between birth and 12 months old with isolated PRS (i-PRS) and syndromic PRS (ni-PRS), who had undergone CT examination, and whose results were compared to the control group of the same age. DICOM data was processed to highlight bone tissue. The mandible and hyoid bones were the main targets of the three-dimensional reconstruction. The study outcomes were the analysis of hyoid bone ossification, volume, and position (distance between hyoid and mandibular symphysis). Univariate and multivariate statistical analyses were performed with α=0.05 as level of significance. RESULTS: The study sample included 29 i-PRS and 21 ni-PRS patients, while 43 infants in the control group. Hyoid ossification was present in 26/50 (52%) PRS patients (14 i-PRS; 12 ni-PRS) but in 31/43 controls (72%). Statistical analysis showed that absence of hyoid ossification was significantly associated with the diagnosis of PRS (P<0.05). Only ni-PRS patients showed a significant reduction of the distance between hyoid and mandible compared to the control group (P<0.001). Hyoid volume was significantly lower only in the ni-PRS group than in controls (P<0.001). CONCLUSION: I-PRS and ni-PRS patients differ both etiologically and clinically. Ni-PRS patients confirmed their worst clinical condition than i-PRS with severe anomalies of hyoid development, helping for their ontogeny classification.


Assuntos
Osso Hioide , Síndrome de Pierre Robin , Humanos , Osso Hioide/diagnóstico por imagem , Imageamento Tridimensional , Lactente , Síndrome de Pierre Robin/diagnóstico por imagem , Estudos Retrospectivos , Tomografia Computadorizada por Raios X
14.
Dysphagia ; 35(1): 66-72, 2020 02.
Artigo em Inglês | MEDLINE | ID: mdl-30919104

RESUMO

Videofluoroscopic swallow studies are widely used in clinical and research settings to assess swallow function and to determine physiological impairments, diet recommendations, and treatment goals for people with dysphagia. Videofluoroscopy can be used to analyze biomechanical events of swallowing, including hyoid bone displacement, to differentiate between normal and disordered swallow functions. Previous research has found significant associations between hyoid bone displacement and penetration/aspiration during swallowing, but the predictive value of hyoid bone displacement during swallowing has not been explored. The primary objective of this study was to build a model based on aspects of hyoid bone displacement during swallowing to predict the extent of airway penetration or aspiration during swallowing. Aspects of hyoid bone displacement from 1433 swallows from patients referred for videofluoroscopy were analyzed to determine which aspects predicted risk of penetration and aspiration according to the Penetration-Aspiration Scale. A generalized estimating equation incorporating components of hyoid bone displacement and variables shown to impact penetration and aspiration (such as age, bolus volume, and viscosity) was used to evaluate penetration and aspiration risk. Results indicated that anterior-horizontal hyoid bone displacement was the only aspect of hyoid bone displacement predictive of penetration and aspiration risk. Further research should focus on improving the model performance by identifying additional physiological swallowing events that predict penetration and aspiration risk. The model built for this study, and future modified models, will be beneficial for clinicians to use in the assessment and treatment of people with dysphagia, and for potentially tracking improvement in hyolaryngeal excursion resulting from dysphagia treatment, thus mitigating adverse outcomes that can occur secondary to dysphagia.


Assuntos
Cinerradiografia/estatística & dados numéricos , Transtornos de Deglutição/diagnóstico por imagem , Deglutição , Osso Hioide/diagnóstico por imagem , Aspiração Respiratória/diagnóstico , Idoso , Fenômenos Biomecânicos , Cinerradiografia/métodos , Transtornos de Deglutição/complicações , Transtornos de Deglutição/fisiopatologia , Feminino , Humanos , Osso Hioide/fisiopatologia , Masculino , Pessoa de Meia-Idade , Valor Preditivo dos Testes , Estudos Prospectivos , Aspiração Respiratória/etiologia , Medição de Risco
15.
Laryngoscope ; 130(3): 702-705, 2020 03.
Artigo em Inglês | MEDLINE | ID: mdl-31050806

RESUMO

OBJECTIVE: Anterior cervical pain syndromes (ACPS) are a poorly understood entity associated with lateral neck discomfort when talking, chewing, or yawning, and with occasional excruciating pain and dysphagia. This investigation aims to describe patients with ACPS presenting symptoms and treatments. STUDY DESIGN: Retrospective chart review of all patients with ACPS presenting to a tertiary care laryngology practice in 1 year. METHODS: All patients diagnosed with ACPS for 1 year were reviewed. Patient gender, age, body mass index (BMI), and pain triggers were documented. The hyolaryngeal complex was measured on computed tomography (CT) scans of the neck. Treatments were recorded. RESULTS: Nine patients were diagnosed with an ACPS in a 1-year period. Sixty-seven percent were female with an average age of 47.3 years ± 16.6. The average BMI of a patient with ACPS was 24.8 ± 3.69. The most common symptom was point tenderness at the lateral aspect of the hyoid or superior cornu of the thyroid cartilage (89%). Pain triggers included speaking (67%), head turn (56%), chewing (44%), yawning (56%), and swallowing (56%). On CT imaging, eight of nine patients had abnormalities of the hyoid bone or the superior cornu of the thyroid cartilage, correlating 100% with point tenderness location. Treatments include physical therapy (33%), steroid injection (44%), lidocaine injection (22%), and surgical intervention (56%). CONCLUSION: ACPS is a frustrating condition for patients and physicians. Evaluation of anterior cervical pain with point tenderness should include imaging measurement of the thyrohyoid complex. Effective treatments include local steroid injection and surgical resection of the abnormal structure. LEVEL OF EVIDENCE: 4 Laryngoscope, 130:702-705, 2020.


Assuntos
Osso Hioide/anatomia & histologia , Laringe/anatomia & histologia , Cervicalgia/etiologia , Cervicalgia/terapia , Adulto , Variação Anatômica , Feminino , Humanos , Osso Hioide/diagnóstico por imagem , Laringe/diagnóstico por imagem , Masculino , Pessoa de Meia-Idade , Cervicalgia/diagnóstico , Estudos Retrospectivos , Fatores de Risco , Síndrome , Tomografia Computadorizada por Raios X
16.
Shanghai Kou Qiang Yi Xue ; 29(6): 632-637, 2020 Dec.
Artigo em Chinês | MEDLINE | ID: mdl-33778832

RESUMO

PURPOSE: To investigate the relationships among tongue volume, hyoid position, airway volume and maxillofacial form in paediatric patients with Class Ⅰ, Class Ⅱ and Class Ⅲ malocclusion. METHODS: Data of 112 children with malocclusion in the Department of Stomatology, Wuxi Children's Hospital from December 2015 to December 2018 were collected. The children were divided into three groups according to Angle's classification: Class Ⅰ (n=42), Class Ⅱ (n=38) and Class Ⅲ (n=32). Tongue volume was evaluated by oral B-ultrasound, the hyoid position was obtained by lateral cephalogram, then the airway volume and maxillofacial form were evaluated by cone-beam CT (CBCT). Relationship among tongue volume, hyoid position, airway volume and maxillofacial form were analyzed. The data were processed by SPSS 20.0 software package. RESULTS: The tongue volume of Class III was significantly larger than that of Class I and Class II (P<0.05); H-FH and H-MP of Class II were significantly larger than those of Class I and Class III, and H-VL was significantly smaller than that of Class I and Class III (P<0.05). H-FH and H-MP of Class III were significantly smaller than those of Class I, and H-S was significantly larger than that of Class I (P<0.05); V throat of three types was the largest in Class Ⅲ, followed by Class I and Class Ⅱ, with significant difference (P<0.05). V nose of three types was the largest in Class Ⅱ, followed by Class I and Class Ⅲ, with significant difference (P<0.05). SNB angle of three types was the largest in Class Ⅲ, followed by Class Ⅰ and Class Ⅱ, with significant difference (P<0.05). ANB angle was the largest in Class I, followed by Class Ⅱ and Class Ⅲ, with significant difference (P<0.05). Tongue volume was positively correlated with V throat, V nose, and SNB, and negatively correlated with H-FH and ANB (P<0.05). H-FH and H-MP were negatively correlated with SNB angle and positively correlated with H-MP and ANB angle (P<0.05). CONCLUSIONS: Children with Class Ⅲ malocclusion have larger tongue volume, upward displacement of hyoid, and smaller nasopharyngeal volume. Children with Class II malocclusion have small tongue volume, downward displacement of hyoid, and small oropharyngeal volume. Tongue volume, hyoid position, airway volume and maxillofacial form are significantly correlated in paediatric patients with malocclusions, the influence of mandibular recession on the shape of upper airway should be considered during orthodontic treatment, in order to achieve the best aesthetic and therapeutic effects.


Assuntos
Má Oclusão de Angle Classe III , Má Oclusão de Angle Classe II , Má Oclusão , Cefalometria , Criança , Estética Dentária , Humanos , Osso Hioide/diagnóstico por imagem , Má Oclusão de Angle Classe II/diagnóstico por imagem , Má Oclusão de Angle Classe III/diagnóstico por imagem , Mandíbula , Língua/diagnóstico por imagem
17.
Sci Rep ; 9(1): 15644, 2019 10 30.
Artigo em Inglês | MEDLINE | ID: mdl-31666678

RESUMO

Dysphagia in amyotrophic lateral sclerosis (ALS) increases the risk of malnutrition, dehydration, and aspiration pneumonia. Kinematic analysis of videofluoroscopic swallowing study (VFSS) can provide detailed movement of the hyoid bone, revealing abnormalities of swallowing in ALS patients. We developed an automated kinematic analysis program (AKAP) that analyzes the trajectory of the hyoid bone via a visual tracking method. The aim of this study was to investigate the hyoid movement in ALS patients using AKAP and compare it with non-dysphagic subjects. Thirty ALS patients who underwent VFSS in Seoul National University Bundang Hospital between 2015 and 2017 were recruited. For comparison, 30 age-matched control subjects were also enrolled; the same swallowing study was conducted using thin fluid and yogurt. The hyoid bone movement was analyzed by evaluating the vertical and horizontal distances with four peak points (A, B, C, D), and the time of each point were also calculated. With respect to distance parameters, only vertical peak distance (distance between B, D points) during thin fluid swallowing was significantly decreased in ALS patients. (p = 0.038) With respect to temporal parameters, Time ABC, Time ABCD, and Duration C were significantly increased in ALS patients when swallowing both thin fluid and yogurt. (Time ABC p = 0.019, p = 0.002; Time ABCD p = 0.001, p = 0.004; Duration C p = 0.004, p = 0.025 respectively). This result revealed that dysphagia in ALS patient is caused by decreased velocity of hyoid bone movement due to the development of weakness in swallowing-related muscles. The parameters of kinematic analysis could be used to quantitatively evaluate dysphagia in motor neuron disease.


Assuntos
Esclerose Amiotrófica Lateral/complicações , Transtornos de Deglutição/diagnóstico por imagem , Idoso , Esclerose Amiotrófica Lateral/fisiopatologia , Automação , Fenômenos Biomecânicos , Deglutição , Transtornos de Deglutição/fisiopatologia , Feminino , Fluoroscopia , Humanos , Osso Hioide/química , Osso Hioide/diagnóstico por imagem , Osso Hioide/fisiopatologia , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Gravação em Vídeo
18.
Sci Rep ; 9(1): 15950, 2019 11 04.
Artigo em Inglês | MEDLINE | ID: mdl-31685955

RESUMO

Thorough anatomic knowledge of the hyoid-larynx complex is necessary for forensic radiologists and ear-nose-throat surgeons, given the many anatomic variations that originate in embryology. In forensics the anomalies must be distinguished from fractures because the latter are indicative of violence on the neck. In this manuscript we describe the anatomical variations that can be found in the hyoid-larynx complex and explain their etiology. 284 radiological scans of excised hyoid-larynx complexes were examined with X-ray and CT. Some rare cases from literature and historical collections were added. Two third of the examined hyoid-larynx complexes deviated from the anatomical standard and showed uni- or bilateral ankylosis in the hyoid bone and/or so-called triticeal cartilages. In one fifth of the cases we found striking anatomical variants, mostly derived from the cartilage of the second pharyngeal arch. Anatomical variations of the hyoid-larynx complex can be explained by embryological development. The aberrant hyoid apparatus and the elongated styloid processes (Eagle syndrome) should be considered as one clinical entity with two different expressions as both anomalies are derived from the cartilage of the second pharyngeal arch. Several variants can mimic fractures in this region, so our study is important for radiologists and forensic experts assessing cases of possible violence on the neck.


Assuntos
Variação Biológica da População , Medicina Legal , Osso Hioide/anatomia & histologia , Laringe/anatomia & histologia , Ossificação Heterotópica/diagnóstico , Osso Temporal/anormalidades , Adolescente , Adulto , Fatores Etários , Idoso , Idoso de 80 Anos ou mais , Criança , Pré-Escolar , Feminino , Humanos , Osso Hioide/anormalidades , Osso Hioide/diagnóstico por imagem , Imageamento Tridimensional , Lactente , Recém-Nascido , Cartilagens Laríngeas/anormalidades , Cartilagens Laríngeas/anatomia & histologia , Laringe/anormalidades , Laringe/diagnóstico por imagem , Masculino , Pessoa de Meia-Idade , Modelos Anatômicos , Radiografia , Adulto Jovem
19.
Br J Oral Maxillofac Surg ; 57(10): 1032-1038, 2019 12.
Artigo em Inglês | MEDLINE | ID: mdl-31563482

RESUMO

The objective of the present study was to evaluate the relation between mandibular advancement, the three-dimensional extent of the posterior airway space (PAS), and the position of the hyoid bone, using cone-beam computed tomography (CT). Twenty-eight Class II patients (21 women (mean (SD) age 29 (9) years) and seven men (mean (SD) age 23 (6) years)), who had had mandibular-only advancement surgery (Obwegeser-Dal Pont) were included in the study. In each case, cone-beam CT scans were taken one week before and six months after operation, and a retrospective analysis made of the alterations of several airway variables (volume, mean cross-sectional area, and diameter) and the three-dimensional extent of mandibular and hyoid movement, by using IPlan® cranial software. A linear regression was also done to correlate mandibular advancement, the movement of the hyoid bone, and airway variables. There were significant postoperative increases in all volumetric PAS variables, and in most diametric and spherical variables (p<0.05). There was also a significant linear relation between forward displacement of the mandible and the movement of the hyoid bone (p<0.05). These results show that mandible-only advancement surgery causes an increase in most dimensions of the PAS. This intervention can be assumed to reduce airway resistance and therefore might be a suitable treatment option for patients with obstructive sleep apnoea syndrome.


Assuntos
Osso Hioide , Avanço Mandibular , Cefalometria , Tomografia Computadorizada de Feixe Cônico , Feminino , Humanos , Osso Hioide/anatomia & histologia , Osso Hioide/diagnóstico por imagem , Masculino , Mandíbula/diagnóstico por imagem , Mandíbula/cirurgia , Estudos Retrospectivos
20.
Int Orthod ; 17(4): 678-686, 2019 12.
Artigo em Inglês | MEDLINE | ID: mdl-31488344

RESUMO

OBJECTIVE: The aim of this investigation was to assess, with a descriptive three-dimensional evaluation, the volume of upper airway (UAWV) and the volume of craniofacial structures in adult patients suffering from obstructive sleep apnoea (OSA) and compare them to the corresponding findings in adults with no sleep disorders. MATERIALS AND METHODS: The sample consisted of 54 adult males, 27 suffering from OSA diagnosed by means of the Apnoea Hypopnea Index and 27 with no history of sleep disorders. All subjects had a cone beam computerized tomography scan performed with the same head position. UAWV was assessed with the Amira® software, and craniofacial volumes by means of a specially developed data-processing program, which allowed the construction of tetrahedrons using anatomical landmarks. Assessed volumes were naso-maxillary, cranium upper anterior, oral cavity, post-oral cavity, hyoid to mandible, and post-hyoid. SPSS (version 19.0) was used for the statistical analysis. The Levene's test for Equality of Variance, the t-test for Equality of Means and the Mann-Whitney test were used to evaluate the variables. The level of significance was set at P ≤ 0.05. RESULTS: The mean value of UAWV was smaller in the OSA group. The post-hyoid volume, the calculated posterior volume, and the ratio of posterior to total volume showed differences between the groups. CONCLUSIONS: Craniofacial structures did not show significant differences between the groups, but in the OSA group the posterior space released for upper airway was significantly bigger and UAWV was significantly smaller.


Assuntos
Nariz/anatomia & histologia , Nariz/diagnóstico por imagem , Faringe/anatomia & histologia , Faringe/diagnóstico por imagem , Apneia Obstrutiva do Sono/diagnóstico por imagem , Apneia Obstrutiva do Sono/patologia , Tomografia Computadorizada de Feixe Cônico Espiral/métodos , Adulto , Pontos de Referência Anatômicos , Feminino , Humanos , Osso Hioide/diagnóstico por imagem , Masculino , Mandíbula/diagnóstico por imagem , Maxila/diagnóstico por imagem , Boca
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