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1.
Artigo em Inglês | MEDLINE | ID: mdl-33806739

RESUMO

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.


Assuntos
Transtornos da Articulação Temporomandibular , Cefalometria , Cabeça/anatomia & histologia , Humanos , Osso Hioide , Postura , Estudos Retrospectivos , Transtornos da Articulação Temporomandibular/terapia
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.
Zhonghua Kou Qiang Yi Xue Za Zhi ; 56(3): 256-262, 2021 Mar 09.
Artigo em Chinês | MEDLINE | ID: mdl-33663155

RESUMO

Objective: To explore the effect of extraction on upper airway in skeletal class Ⅰ adolescents. Methods: According to random number table method, 30 skeletal class Ⅰteenagers who underwent orthodontic straight wire treatment were selected randomly in Department of Orthodontics, School of Stomatology, The Fourth Military Medical University between January 2016 and December 2019. There were 13 males and 17 females, aged (13.7±1.5) years (12.2-15.7 years). In all patients, four first premolars were removed and the upper and lower anterior teeth were retracted under non-maximal anchorage (non-implant anchorage or face bow). The cone-beam CT (CBCT) data before and after orthodontic extraction treatments were studied. The three-dimensional model of the upper airway was reconstructed and segmented, and the relevant indexes of oropharyngeal volume and cross-sectional area were measured. Cephalograms was generated to measure tooth-jaw indexes and hyoid position. The changes of each index before and after orthodontic treatment were compared. The correlation between the changes in the volume or sectional area of the oropharyngeal airway and the changes in the dental and maxillary indexes and the hyoid position was tested. Results: Compared with those before treatment, palatopharyngeal volume, glossopharyngeal volume, oropharyngeal total volume, and minimum transection area increased by 632 (558) mm3, 758 (549) mm3, 1 454 (955) mm3 and 14 (29) mm2 respectively, and statistically significant differences were found (P<0.05). The minimum oropharyngeal area was mostly located in the glossopharynx. The cross-sectional area and the maximum anterior-posterior diameter of uvula tip decreased by (4±10) mm2 and (0.4±0.8) mm respectively, and the difference was statistically significant (P<0.05). There was no significant difference in the maximum lateral diameter before and after treatment (P>0.05). The ratio of the maximum antero-posterior diameter to the maximum lateral diameter at the uvula tip decreased from 0.589 (0.034) before treatment to 0.535 (0.047) after treatment (P<0.05), indicating that its shape tends to be more elliptic after treatment. In addition, the change of cross-sectional area at the apex of uvula was positively correlated with the changes of mandibular central incisor lip inclination and the distances from the upper and lower central incisor points to the Frankfort plane perpendicular to the sella point (UI-FHp and LI-FHp) (P<0.05). Conclusions: The impact of orthodontic extraction treatment on oropharyngeal airway was generally small in skeletal class Ⅰ adolescents. However, it could change the shape of the airway to some extent. The change of airway cross-sectional area at the uvula tip was positively correlated with the retraction of anterior teeth.


Assuntos
Mandíbula , Maxila , Adolescente , Dente Pré-Molar , Cefalometria , Criança , Tomografia Computadorizada de Feixe Cônico , Feminino , Humanos , Osso Hioide , Masculino , Maxila/diagnóstico por imagem
4.
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
5.
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
6.
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
7.
Clin Oral Investig ; 25(3): 1525-1534, 2021 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-33409688

RESUMO

OBJECTIVES: Angle Class II malocclusions including a retrognathic mandible are the most frequent orthodontic problems. Both removable and fixed functional appliances can be used for mandibular advancement. Mandibular advancement after treatment with any fixed functional appliance has numerous therapeutic effects, such as stretching of masticatory muscles, ligaments, membranes and surrounding soft tissues, thus causing positional changes of the hyoid bone and epiglottis. This retrospective study investigates and compares treatment effects upon epiglottis- and hyoid bone position and posterior airway space in class II patients who received mandibular advancement through two different cast splint fixed functional appliances. MATERIAL AND METHODS: Two groups of 21 patients each ('Functional Mandibular Advancer' (FMA) and Herbst appliance) were investigated. The same experienced orthodontist performed the treatment in all patients, employing a single-step advancement protocol. The mandible always received initial protrusion into an edge-to-edge position. Conventional lateral cephalograms were available pre-treatment (T1) and immediately after appliance removal (T2) for all patients. The measurements comprised (I) hyoid bone, (II) epiglottis or (III) posterior airway space. Treatment-related changes were analysed with one-sample Student's t tests for intragroup comparisons and independent Student's t tests for intergroup comparisons. Statistical significance was set at p < 0.05. RESULTS: Measurements of the hyoid bone showed mostly increases for both appliances after treatment. Intergroup comparisons were not significant for FMA patients but significant for selected measurements in Herbst appliance patients. Intergroup comparisons showed insignificant changes. The posterior airway space was always insignificantly increased after treatment. The greatest increase was found caudally. Intergroup comparisons showed insignificant changes. CONCLUSIONS: Both fixed functional appliances cause an anterior and caudal displacement of epiglottis and hyoid bone and enlarge the posterior airway space. The therapeutic effects of the Herbst appliance are slightly larger, although not significantly. CLINICAL RELEVANCE: Treatment with either Herbst appliance of FMA alters the hyoid bone position and enlarges the posterior airway space. Still, long-term data are as yet unavailable; it remains unknown if the effects upon posterior airway space remain stable, and if a resulting posterior airway space enlargement may have clinical influence upon obstructive sleep apnoea syndrome.


Assuntos
Má Oclusão de Angle Classe II , Aparelhos Ortodônticos Funcionais , Cefalometria , Epiglote , Humanos , Osso Hioide , Má Oclusão de Angle Classe II/terapia , Mandíbula , Aparelhos Ortodônticos Fixos , Estudos Retrospectivos , Contenções
8.
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
9.
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
10.
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
11.
Medicine (Baltimore) ; 99(38): e22136, 2020 Sep 18.
Artigo em Inglês | MEDLINE | ID: mdl-32957335

RESUMO

The aim of this study was to investigate the effect of the jaw opening exercise (JOE) on the thickness of the suprahyoid muscle and hyoid bone movement compared with the head lift exercise (HLE) in patients with dysphagia after strokeThis study recruited 30 patients with dysphagia after stroke. The JOE group performed a JOE using a resistance bar. The HLE group performed the traditional HLE. The total intervention duration was 6 weeks. We measured the thickness of the digastric and mylohyoid muscles using ultrasound. Two-dimensional motion analysis of the hyoid bone was performed using Image J software. The Borg rating of the perceived exertion scale was used to assess the intensity level of physical activity during the 2 exercises.Both groups showed a significant increase in the thickness of the digastric and mylohyoid muscles (P < .05). Hyoid bone motion was significantly increased in the anterior and superior movement in both groups (P < .05). After the intervention, there was no significant difference between the 2 groups. The Borg rating of perceived exertion scale for the JOE group was significantly lower than that of the HLE group (P < .05).In conclusion, this study demonstrated that the JOE and the HLE had similar effects with respect to increasing suprahyoid muscle thickness and improving hyoid bone movement. However, the JOE required less perceived exertion than the HLE.


Assuntos
Transtornos de Deglutição/etiologia , Transtornos de Deglutição/terapia , Terapia por Exercício/métodos , Acidente Vascular Cerebral/complicações , Transtornos de Deglutição/fisiopatologia , Feminino , Humanos , Osso Hioide/fisiologia , Masculino , Pessoa de Meia-Idade , Músculos do Pescoço/fisiologia , Projetos Piloto , República da Coreia
12.
Artigo em Chinês | MEDLINE | ID: mdl-32842179

RESUMO

Objective:To investigate the efficacy, complications and recurrence rate of thyroglossal duct cyst resection with hyoid preservation in children. Method:Fifty-four children with thyroglossal duct cyst underwent cervical color Doppler ultrasound, CT and/or MRI before operation to make a definite diagnosis.Hyoid-preserving thyroglossal cyst resection was performed in all children.In 51 cases, the cyst wall was close to the hyoid bone, and the thin layer of the hyoid bone surface was removed, while the other 3 cases had no definite association with hyoid bone, only cysts and branches were resected.In the cases where the cyst was close to the hyoid bone, fistula tissue was found in the suprahyoid muscle group in 4 cases, which were carefully separated and excised. Result:All patients had no complications after operation, and the incision healed in the first stage. Postoperative pathology: 51 cases were thyroglossal duct cysts and 3 cases were epidermoid cysts.Follow-up for 1 years to 3 years showed that only 1 case had recurrence(2.0%,1/51). Conclusion:Postoperative recurrence of thyroid hyoid cysts does not depend on whether the hyoid bone is removed, but on the residue of its branches.The significance of hyoid bone preservation is to narrow the scope of operation, reduce trauma and complications, and avoid the impact of hyoid bone loss on vocal and swallowing function.


Assuntos
Cisto Tireoglosso , Neoplasias da Glândula Tireoide , Criança , Humanos , Osso Hioide , Pescoço , Recidiva Local de Neoplasia
13.
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
14.
Shanghai Kou Qiang Yi Xue ; 29(2): 187-191, 2020 Apr.
Artigo em Chinês | MEDLINE | ID: mdl-32626884

RESUMO

PURPOSE: To estimate the relationship between the eruption status of the mandibular third molars and the thickness of the lingual bone. METHODS: Cone-beam CT (CBCT) data of 187 patients who underwent mandibular third molar extraction from Jan 2016 to Dec 2018 were selected. Lingual bone thickness at the levels of mid-root and root-apex of the third molars were measured using GALIEOS Viewer software, and the relationship between the eruption status of the mandibular third molars and the thickness of the lingual bone was estimated. SPSS 22.0 software package was used for Wilcoxon test, univariate and multivariate logistic regression analysis. RESULTS: The mean thickness of the lingual bone at the mid-root of the third molars was significantly less than that at the root apex (P<0.01). There was a significant correlation between the thickness of the lingual bone at the mid root and the mesiodistal angulations of the third molars. The thickness of the lingual bone at the mid root of mesioangularly and horizontally impacted third molars were significantly thinner (P<0.01). There was a significant correlation between the thickness of the lingual bone at the root apex and the impaction depth of the third molars. The thickness of the lingual bone at the root apex of medium and low positioned third molars were significantly thinner (P<0.05). CONCLUSIONS: The thickness of the lingual bone is associated with the eruption status of the mandibular third molars. Mesially angulated and lower positioned third molars are considered as the risk factors for the thinner lingual bone, so that lingual plate fracture should be prevented during tooth extraction.


Assuntos
Osso Hioide , Dente Impactado , Tomografia Computadorizada de Feixe Cônico , Humanos , Mandíbula , Dente Molar , Dente Serotino
15.
Medicine (Baltimore) ; 99(25): e20818, 2020 Jun 19.
Artigo em Inglês | MEDLINE | ID: mdl-32569230

RESUMO

RATIONALE: Stylohyoid complex syndrome is characterized by various cervicopharyngeal symptoms related to the ossification and abnormality of the styloid process, stylohyoid ligament, and the lesser horn of the hyoid bone. Eagle syndrome is the most well-known of the spectra of these diseases. Although surgical treatment is considered effective, conservative treatment may be beneficial if symptoms arise because of inflammation of the soft tissues attached to the styloid process or hyoid bone. PATIENT CONCERNS: A 68-year-old man presented with pain in the right side of the neck and odynophagia after trauma on his philtrum. He was diagnosed with Eagle syndrome elicited by a fracture from indirect trauma. Despite analgesic medication and physiotherapy, the pain had somewhat relieved but persisted for 1 year. DIAGNOSIS: Computed tomography revealed complete ossification of the bilateral stylohyoid complex. A fracture was observed in the ampulla on the right side of the neck. One year later, the fracture resolved by complete union. INTERVENTIONS: Ultrasonography was performed and abnormal ossification was observed on the right side of the neck. Five milligrams of dexamethasone at a concentration of 1 kg/m was slowly injected into the tender point under ultrasonographic guidance. OUTCOMES: The patient reported immediate reduction of pain and was satisfied with the resolution. No recurrence was observed during a 6-month follow-up period. LESSONS: Although traumatic fracture of the ossified ligament elicited the syndrome, the results were satisfactory because the origin of the patient's pain was presumed to arise from inflammatory conditions. This case demonstrates that treatment with local steroid injection may be appropriate for patients who present with pain originating from muscles and ligaments.


Assuntos
Dexametasona/uso terapêutico , Fraturas Ósseas/complicações , Osso Hioide/lesões , Ligamentos Articulares/lesões , Ossificação Heterotópica/diagnóstico , Osso Temporal/anormalidades , Idoso , Dexametasona/administração & dosagem , Humanos , Ligamentos Articulares/patologia , Masculino , Ossificação Heterotópica/tratamento farmacológico , Ossificação Heterotópica/etiologia
16.
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
18.
J Oral Rehabil ; 47(8): 967-976, 2020 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-32350874

RESUMO

BACKGROUND: Tongue lift movement (TLM) is used as a therapy to improve tongue pressure against the hard palate for dysphagic patients. OBJECTIVE: The present study aimed to characterize the time-dependent endurance changes in hyoid muscle activity and hyoid-laryngeal displacement during TLM in different ways. METHODS: Sixteen young healthy volunteers were instructed to perform TLM at maximum effort (100%) against the anterior and posterior parts of the hard palate using a balloon-type tongue pressure instrument, followed by a 10-second recording during anterior 80% TLM, anterior 100% TLM, posterior 80% TLM and posterior 100% TLM with visual feedback. Electromyography (EMG) of suprahyoid (S-Hyo) and infrahyoid (I-Hyo) muscles and videofluorography were simultaneously recorded. To evaluate temporal changes, the recording period was divided into three substages: early, middle and late. Tongue pressure, integrated EMG (iEMG), power frequency of EMG burst and hyoid-laryngeal position were compared among the conditions (80% vs 100%, anterior vs posterior and early vs middle vs late). RESULTS: Tongue pressure was stably maintained for 10 seconds in all conditions. S-Hyo iEMG and I-Hyo iEMG were significantly greater at 100% than at 80%, while no significant difference was observed between positions. S-Hyo iEMG and I-Hyo iEMG significantly increased at the late stage, while power frequency of EMG burst gradually decreased. Significant temporal changes in laryngeal elevation were observed only in posterior 100% TLM. CONCLUSION: The current results suggested that isometric posterior TLM may be more useful compared with anterior TLM in clinical situations for dysphagic patients to elevate the hyolaryngeal complex.


Assuntos
Laringe , Língua , Deglutição , Eletromiografia , Humanos , Osso Hioide , Movimento , Músculos do Pescoço , Pressão
20.
J Morphol ; 281(6): 646-652, 2020 06.
Artigo em Inglês | MEDLINE | ID: mdl-32302429

RESUMO

The Rancho La Brea (RLB) fossil collection housed at the La Brea Tar Pits and Museum in Los Angeles, California, is one of the richest collections of carnivoran fossils in the world. The collection is also particularly well known for the preservation of rare and understudied bones in the tar, including the small bony apparatus that is of particular interest to this study, the hyoid. The La Brea collection houses hyoids from several extinct carnivoran species, some of the most common being those of Canis dirus (the dire wolf) and Canis latrans (the coyote). In this study, we compare fossilized hyoid elements from these two canids to samples from modern large congeners, namely: Canis lupus (the gray wolf), Canis rufus (the red wolf), and modern C. latrans. Seven or nine measurements were taken on each bone of the hyoid apparatus, and principal component analyses were performed in order to determine statistical significance between species. For most of the bones, the majority of the variation was driven by size. Dire wolves could be clearly differentiated from all other canids for all elements; the hyoid apparatus of C. dirus is larger and more robust than that of C. lupus. Most of the bony elements could not be distinguished between red wolves or modern coyotes. However, there are enough, complete fossil coyote basihyoids to compare with those of their modern relatives, and in several metrics (both PC shapes and overall size), RLB and modern C. latrans are significantly different. As larger hyoids have been associated with a lower vocal frequency, this distinction would have resulted in the vocalizations of C. dirus occurring at a lower frequency than those produced by C. lupus and perhaps lower vocalizations in ice age coyotes than their modern relatives. RESEARCH HIGHLIGHTS: We quantify morphological differences in the hyoid of dire wolves (Canis dirus) relative to extant grey wolves (Canis lupus), and hypothesize that, as larger hyoids have been associated with a lower vocal frequency, the vocalizations of C. dirus might have occurred at a lower frequency than those by C. lupus. Likewise, modern and fossil coyotes (Canis latrans) show a significant difference in basihyoid size and shape, potentially indicating that modern and ancient coyotes might have sounded differently.


Assuntos
Anatomia Comparada , Fósseis , Osso Hioide/anatomia & histologia , Vocalização Animal/fisiologia , Lobos/anatomia & histologia , Animais , California , Tamanho do Órgão , Análise de Componente Principal
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