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1.
Rev. Odontol. Araçatuba (Impr.) ; 41(3): 15-21, set./dez. 2020. ilus
Artigo em Português | LILACS, BBO - Odontologia | ID: biblio-1121724

RESUMO

Introdução: A bichectomia é um procedimento cirúrgico que remove parte do corpo adiposo bucal não apenas para fins estéticos, mas também funcionais, limitando o trauma recorrente na região jugal. A correta indicação cirúrgica e o auxílio de exames de imagem são essenciais para o planejamento cirúrgico e seleção da técnica a ser utilizada, minimizando as taxas de complicações e alcançando resultados seguros e satisfatórios. Objetivo: Relatar dois casos clínicos em que a bichectomia foi realizada, enfatizando a importância da ultrassonografia pré-operatória na determinação do volume do corpo adiposo bucal e abordando duas técnicas cirúrgicas. Relato de casos clínicos: Duas pacientes do sexo feminino (18 e 32 anos), normosistêmicas, relataram queixas de insatisfação estética com o contorno arredondado da face, além de trauma constante na mucosa jugal. Ao exame clínico, as pacientes apresentavam mucosa jugal de volume aumentado e traumatizado. A bichectomia foi realizada pelo acesso de Matarasso e pelo fundo de sulco. Conclusão: a ultrassonografia mostrou-se eficiente no planejamento cirúrgico da bichectomia, favorecendo a retirada do corpo adiposo da bochecha de forma previsível, rápida e segura. As duas técnicas cirúrgicas foram eficazes para remoção do corpo adiposo bucal(AU)


Introduction: Bichectomy is a surgical procedure that removes part of the buccal fat pad not only for esthetic but also functional purposes, limiting recurrent trauma in the jugal region. The correct surgical indication and the aid of imaging examinations are essential for the surgical planning and selection of the technique to be used, minimizing complication rates and achieving safe and satisfactory results. Objective: To report two clinical cases in which bichectomy was performed, emphasizing the importance of preoperative ultrasonography in determining the volume of the buccal fat pad. Report of clinical cases: Two female patients (18 and 32 years), normosistemic, reported complaints of aesthetic dissatisfaction with the rounded contour of the face, in addition to a constant complaint of trauma to the jugal mucosa. At the clinical examination, the patients presented jugal mucosa of increased and traumatized volume. A bichectomy was performed by Matarasso access and by the furrow fund. Conclusion: ultrasonography proved to be efficient in assisting the surgical planning of bichectomy, favoring the removal of the buccal fat pad in a predictable, fast and safe way. The two surgical techniques were effective for removal of the buccal fat pad(AU)


Assuntos
Bochecha , Bochecha/cirurgia , Cirurgia Bucal , Tecido Adiposo , Ultrassonografia , Estética , Face
2.
Orthod Fr ; 91(1-2): 115-128, 2020 Jun 01.
Artigo em Inglês | MEDLINE | ID: mdl-33146126

RESUMO

With the conventional 2D exam of clinical cases, the diagnosis is penalized by the lack of data, not only for vertical or transverse or asymmetrical problems, but for classical cases of anteroposterior dysharmonies. In these cases, the effectively used parameter, ANB angle, seems insufficient. So the authors elaborated a 3D biometry tool. The program of morphological analysis is able to deliver a complete description of dysharmony, supported by Cone Beam data capture. In the first part of this article the authors present the foundation of the model: anatomical reference, skeletal landmarks, teeth location by inertia matrix calculus, parameters, diagnosis and aid to treatment plan. The second part is the presentation, step by step, of the program in function, analyzing a great case of Class II hyperdivergent, border line surgery. All along the diagnosis way, the authors make the assistant discover all the documents given by the computer about complete 3D diagnosis and aid to treatment plan.


Assuntos
Tomografia Computadorizada de Feixe Cônico , Má Oclusão de Angle Classe II , Biometria , Cefalometria , Face/cirurgia , Humanos , Imageamento Tridimensional , Mandíbula
3.
FP Essent ; 497: 11-17, 2020 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-33021773

RESUMO

Nonsurgical cosmetic procedures, including injection procedures, are among the fastest growing medical procedures. In 2018, botulinum toxin and hyaluronic acid injections were the two most common nonsurgical cosmetic procedures performed in the United States. Botulinum toxin is a neuromodulator with seven serotypes, but only serotypes A and B are in clinical use. The facial areas in which botulinum toxin is used most commonly include the forehead, glabella, and lateral canthal lines (ie, crow's feet). Adverse effects are transient. Several types of injectable dermal fillers are available. Hyaluronic acid is the most commonly used filler and is hypoallergenic. Others include calcium hydroxylapatite, poly L-lactic acid, and polymethylmethacrylate. The characteristics of fillers, including their elasticity and viscosity, are used to determine which should be used for specific applications. Potential serious complications include vascular occlusion leading to tissue necrosis or blindness. Immediate recognition and management of complications are needed to prevent long-term sequelae. With appropriate training, physicians and other clinicians can perform these injections safely in the office setting.


Assuntos
Técnicas Cosméticas , Envelhecimento da Pele , Cirurgia Plástica , Face , Humanos , Ácido Hialurônico , Estados Unidos
4.
Annu Int Conf IEEE Eng Med Biol Soc ; 2020: 4187-4190, 2020 07.
Artigo em Inglês | MEDLINE | ID: mdl-33018920

RESUMO

Recently, video plethysmography (VPG) - a heart rate estimation technique using a video camera - has gained significant attention. Most studies of VPG have used a visible RGB camera; only a limited number of studies investigating near-infrared light (wavelength 750-2500 nm), which can be used even in a dark environment, have been performed. The purpose of this study was to investigate the differences between VPG data collected using visible light (VPGVIS) or near-infrared light (VPGNIR) from four facial areas (forehead, right cheek, left cheek, and nose). An experiment was conducted to obtain both VPGVIS and VPGNIR simultaneously by alternately irradiating the face with NIR and VIS lights. Experimental results showed that the root mean squared error of heart rate estimated using VPGNIR was 1 bpm higher than that of VPGVIS. However, contrary to our expectations, the power of the heartbeat-related component included in VPGNIR was not reduced despite the absorbance of hemoglobin in the NIR light range being 1/100 of that in the VIS light range. This result supports the hypothesis that a main factor in the generation of VPG waves was change in the optical properties caused by blood vessels compressing the subcutaneous tissue and the venous bed. Additionally, the accuracy of the heart rate estimation using VPG tended to be high when the nose was set as the ROI. This result was likely associated with the anatomical structure of the nose.


Assuntos
Face , Pletismografia , Testa , Humanos , Raios Infravermelhos , Nariz
5.
Annu Int Conf IEEE Eng Med Biol Soc ; 2020: 662-665, 2020 07.
Artigo em Inglês | MEDLINE | ID: mdl-33018074

RESUMO

Patients suffering from chronic facial palsy are frequently impaired by severe life-long dysfunctions. Thus, the loss of the ability to close eyes rapidly and completely bears the risk of corneal damages. Moreover, the loss of smile and an altered facial expression imply psychological stress and impede a healthy social life. Since surgical and conservative treatments frequently do not solve many problems sufficiently, closed-loop neural prosthesis are considered as feasible approach. For it, amongst others a reliable detection of the currently executed facial movement is necessary. In our proof of concept study, we propose a data-driven feature extraction for classifying eye closures and smile based on intramuscular EMGs from orbicularis oculi and zygomaticus muscles of the patient's palsy side. The data-adaptive nature of the approach enables a flexible applicability to different muscles and subjects without patient-or muscle-specific adaptations.


Assuntos
Paralisia de Bell , Paralisia Facial , Face , Músculos Faciais , Humanos , Sorriso
6.
Annu Int Conf IEEE Eng Med Biol Soc ; 2020: 871-875, 2020 07.
Artigo em Inglês | MEDLINE | ID: mdl-33018123

RESUMO

Autism Spectrum Disorder (ASD) is a heterogeneous neurodevelopmental disorder (NDD) with a high rate of comorbidity. The implementation of eye-tracking methodologies has informed behavioral and neurophysiological patterns of visual processing across ASD and comorbid NDDs. In this study, we propose a machine learning method to predict measures of two core ASD characteristics: impaired social interactions and communication, and restricted, repetitive, and stereotyped behaviors and interests. Our method extracts behavioral features from task performance and eye-tracking data collected during a facial emotion recognition paradigm. We achieved high regression accuracy using a Random Forest regressor trained to predict scores on the SRS-2 and RBS-R assessments; this approach may serve as a classifier for ASD diagnosis.


Assuntos
Transtorno do Espectro Autista , Reconhecimento Facial , Transtorno de Comunicação Social , Adolescente , Transtorno do Espectro Autista/diagnóstico , Emoções , Face , Humanos
7.
Annu Int Conf IEEE Eng Med Biol Soc ; 2020: 1194-1197, 2020 07.
Artigo em Inglês | MEDLINE | ID: mdl-33018201

RESUMO

Over the last few years, camera-based estimation of vital signs referred to as imaging photoplethysmography (iPPG) has garnered significant attention due to the relative simplicity, ease, unobtrusiveness and flexibility offered by such measurements. It is expected that iPPG may be integrated into a host of emerging applications in areas as diverse as autonomous cars, neonatal monitoring, and telemedicine. In spite of this potential, the primary challenge of non-contact camera-based measurements is the relative motion between the camera and the subjects. Current techniques employ 2D feature tracking to reduce the effect of subject and camera motion but they are limited to handling translational and in-plane motion. In this paper, we study, for the first-time, the utility of 3D face tracking to allow iPPG to retain robust performance even in presence of out-of-plane and large relative motions. We use a RGB-D camera to obtain 3D information from the subjects and use the spatial and depth information to fit a 3D face model and track the model over the video frames. This allows us to estimate correspondence over the entire video with pixel-level accuracy, even in the presence of out-of-plane or large motions. We then estimate iPPG from the warped video data that ensures per-pixel correspondence over the entire window-length used for estimation. Our experiments demonstrate improvement in robustness when head motion is large.


Assuntos
Algoritmos , Fotopletismografia , Face , Monitorização Fisiológica , Movimento (Física)
8.
Annu Int Conf IEEE Eng Med Biol Soc ; 2020: 1783-1786, 2020 07.
Artigo em Inglês | MEDLINE | ID: mdl-33018344

RESUMO

Children with cerebral palsy and complex communication needs face limitations in their access technology (AT) usage. Speech recognition software and conventional ATs (e.g., mechanical switches) can be insufficient for those with speech impairment and limited control of voluntary motion. Automatic recognition of head movements represents a promising pathway. Previous studies have shown the robustness of head pose estimation algorithms on adult participants, but further research is needed to use these methods with children. An algorithm for head movement recognition was implemented and evaluated on videos recorded in a naturalistic environment when children were playing a videogame. A face-tracking algorithm was used to detect the main facial landmarks. Head poses were then estimated using the Pose from Orthography and Scaling with Iterations (POSIT) algorithm and three head movements were classified through Hidden Markov Models (HMMs). Preliminary classification results obtained from the analysis of videos of five typically developing children showed an accuracy of up to 95.6% in predicting head movements.


Assuntos
Movimentos da Cabeça , Reconhecimento Psicológico , Adulto , Algoritmos , Criança , Face , Humanos , Interface para o Reconhecimento da Fala
9.
Annu Int Conf IEEE Eng Med Biol Soc ; 2020: 2634-2637, 2020 07.
Artigo em Inglês | MEDLINE | ID: mdl-33018547

RESUMO

In this paper, we propose a novel video-based remote heart rate (HR) estimation method based on 3D facial landmarks. The key contributions in our method are twofold: (i) We introduce 3D facial landmarks detection to the video-based HR estimation and (ii) we propose a novel face patch visibility check manner based on the face patch normal in the 3D space. We experimentally demonstrate that, compared with baseline methods using 2D facial landmarks, our proposed method using 3D facial landmarks improves the robustness of HR estimation to head rotations and partial face occlusion. We also demonstrate that our visibility check is effective for selecting sufficiently visible face patches, contributing to the improvement of HR estimation accuracy.


Assuntos
Face , Imageamento Tridimensional , Frequência Cardíaca
10.
Annu Int Conf IEEE Eng Med Biol Soc ; 2020: 3662-3665, 2020 07.
Artigo em Inglês | MEDLINE | ID: mdl-33018795

RESUMO

Bell's palsy impairs the symmetry of facial appearance and movement. Detailed examination of facial muscle activities should be important for the diagnosis and treatment of the Bell's palsy. In this study, facial muscle activities in normal and Bell's palsy conditions were measured using a high-density (HD) electromyography (EMG) technique. The EMG signals during active tasks (four different facial expressions) and resting task were collected with a HD array of EMG electrodes from forehead and cheek muscles. To visualize facial EMG activities, the EMG maps were reconstructed from the HD-EMG recordings. The two-dimension (2D) correlation coefficients between right and left sides of facial EMG maps were calculated to evaluate the symmetry of facial muscle activities during these tasks. Our experimental results showed that the 2D correlation coefficients during active tasks were different significantly (P<0.01) between the healthy group(n=4) and Bell's palsy group(n=3). These results demonstrated that the synchronism of facial muscle activities during active tasks in healthy subjects is greater than that in the Bell's palsy subjects. This pilot study suggested that HD-EMG would be a potential technique to assess abnormal asymmetric activities of facial muscles for Bell's palsy.


Assuntos
Paralisia de Bell , Paralisia Facial , Paralisia de Bell/diagnóstico , Eletromiografia , Face , Paralisia Facial/diagnóstico , Humanos , Projetos Piloto
12.
Stomatologiia (Mosk) ; 99(5): 122-126, 2020.
Artigo em Russo | MEDLINE | ID: mdl-33034189

RESUMO

PRP-therapy - method, based on local application platelet rich plasma. Efficiency of this method is investigated and approved both in vitro and in vivo. PRP includes growth factors: platelet derived growth factor, transforming growth factor, epidermal growth factor, insulin-like growth factor, vascular endothelial growth factor, which significantly accelerate regenerative process. PRP-therapy reduces pain syndrome, accelerates tissue regeneration and has an anti-inflammatory effect.


Assuntos
Plasma Rico em Plaquetas , Fator A de Crescimento do Endotélio Vascular , Face , Peptídeos e Proteínas de Sinalização Intercelular , Cicatrização
13.
Annu Int Conf IEEE Eng Med Biol Soc ; 2020: 6115-6118, 2020 07.
Artigo em Inglês | MEDLINE | ID: mdl-33019366

RESUMO

We present the use of a deep Unet convolutional neural network as an automated way of sizing nasal Positive Airway Pressure (PAP) masks using facial images of patients. Using a VGG16 backbone the network was trained with the MUCT dataset and a significant amount of data augmentation. The trained model was then applied to a small custom dataset of PAP and non-PAP patients to predict the nose widths and corresponding PAP mask sizes of each subject. The Unet model produced a mask sizing accuracy of 63.73% (116/183) and a within one size accuracy of 88.5% (162/183).


Assuntos
Máscaras , Coluna Vertebral , Face , Humanos , Redes Neurais de Computação
14.
BMC Med Genet ; 21(1): 193, 2020 10 02.
Artigo em Inglês | MEDLINE | ID: mdl-33008324

RESUMO

BACKGROUND: Kabuki syndrome (KS) is a rare congenital condition with cardinal manifestations of typical facial features, developmental delays, skeletal anomalies, abnormal dermatoglyphic presentations, and mild to moderate intellectual disability. Pathogenic variants in two epigenetic modifier genes, KMT2D and KDM6A, are responsible for KS1 and KS2, respectively. CASE PRESENTATION: A Chinese girl had persistent neonatal hypoglycemia and Dandy-Walker variant. Whole-exome sequencing identified a novel single nucleotide deletion in KMT2D (NM_003482.3 c.12165del p.(Glu4056Serfs*10)) that caused frameshift and premature termination. The mutation was de novo. According to the American College of Medical Genetics and Genomics (ACMG) guidelines, this variant is considered pathogenic. The patient was diagnosed with KS by molecular testing. CONCLUSION: A single novel mutation in KMT2D was identified in a KS patients with hypoglycemia and Dandy-Walker variant in the neonatal stage. A molecular test was conducted to diagnose KS at an early stage.


Assuntos
Anormalidades Múltiplas/genética , Proteínas de Ligação a DNA/genética , Síndrome de Dandy-Walker/genética , Face/anormalidades , Doenças Hematológicas/genética , Hipoglicemia/genética , Proteínas de Neoplasias/genética , Deleção de Sequência , Doenças Vestibulares/genética , Anormalidades Múltiplas/diagnóstico , Sequência de Bases , Síndrome de Dandy-Walker/diagnóstico , Feminino , Testes Genéticos , Doenças Hematológicas/diagnóstico , Humanos , Hipoglicemia/diagnóstico , Recém-Nascido , Homologia de Sequência do Ácido Nucleico , Doenças Vestibulares/diagnóstico , Sequenciamento Completo do Exoma/métodos
15.
Rev Med Suisse ; 16(712): 2056-2058, 2020 Oct 28.
Artigo em Francês | MEDLINE | ID: mdl-33112520

RESUMO

Facial and orbital emphysema without any trauma is an uncommon condition that might occur after nose blowing or sneezing efforts. It is usually self-limited and resolves spontaneously within two weeks. Surgical treatment is only reserved in case of complications such as neurological deficiencies or infection of the ocular globe. We report the case of a 42 year-old patient presenting a right spontaneous facial and orbital emphysema following nose blowing, treated by conservative measures, with a systematic review of the literature.


Assuntos
Enfisema/etiologia , Olho , Face , Doenças Orbitárias/etiologia , Espirro , Adulto , Humanos , Seios Paranasais , Pressão
16.
Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi ; 32(4): 428-431, 2020 Apr 20.
Artigo em Chinês | MEDLINE | ID: mdl-32935524

RESUMO

OBJECTIVE: To investigate the prevalence of Demodex infection among students in Kunming Medical University, and identify the factors affecting Demodex infections, so as to provide the evidence for the development of the strategy for the prevention of Demodex infections. METHODS: A total of 1 463 students from Grade 2014 who studied Medical Parasitology in Kunming Medical University were included in the survey. Demodex was examined in students'facial skin using the cellophane tape method, and the species was identified using microscopy. The students'gender, ethnicity, place of origin and skin type were captured using a questionnaire survey. RESULTS: The overall prevalence of Demodex infections was 19.07% (279/1 463) on the facial skin among the university students, and a higher prevalence was seen in girls (21.16%, 183/865) than in boys (16.05%, 96/598) (χ2 =5.965,P <0.05).TheprevalenceofDemodex infectionswas18.33%(66/360)amongminorethnicstudents,andnoethnicity-specific prevalence was seen (P > 0.05). Demodex folliculorum was the predominant species, with a prevalence of 50.54% (141/279), and mild infections were predominant among all infections (96.77%, 270/279), without severe infections seen. Multivariate nonconditional logistic regression analysis revealed that gender and roommates with Demodex infections were risk factors of Demodex infections, and the infection was not associated with ethnicity, place of origin or skin type. There were only 2.53% (37/1 463) of the subjects understanding the knowledge pertaining to the prevention and control of Demodex infection. CONCLUSIONS: A relatively low prevalence of Demodex infection is detected in the facial skin of students from Kunming Medical University, and Demodex infection is associated with gender and roommates with Demodex infections. Health education pertaining to the prevention of Demodex infections is suggested to be intensified among university students.


Assuntos
Infestações por Ácaros , Ácaros , Pele , Animais , China/epidemiologia , Face/parasitologia , Feminino , Humanos , Masculino , Infestações por Ácaros/epidemiologia , Infestações por Ácaros/parasitologia , Ácaros/classificação , Ácaros/fisiologia , Prevalência , Fatores de Risco , Fatores Sexuais , Pele/parasitologia , Estudantes/estatística & dados numéricos , Universidades/estatística & dados numéricos
18.
J Biomed Opt ; 25(9)2020 09.
Artigo em Inglês | MEDLINE | ID: mdl-32921005

RESUMO

SIGNIFICANCE: Infrared thermographs (IRTs) have been used for fever screening during infectious disease epidemics, including severe acute respiratory syndrome, Ebola virus disease, and coronavirus disease 2019 (COVID-19). Although IRTs have significant potential for human body temperature measurement, the literature indicates inconsistent diagnostic performance, possibly due to wide variations in implemented methodology. A standardized method for IRT fever screening was recently published, but there is a lack of clinical data demonstrating its impact on IRT performance. AIM: Perform a clinical study to assess the diagnostic effectiveness of standardized IRT-based fever screening and evaluate the effect of facial measurement location. APPROACH: We performed a clinical study of 596 subjects. Temperatures from 17 facial locations were extracted from thermal images and compared with oral thermometry. Statistical analyses included calculation of receiver operating characteristic (ROC) curves and area under the curve (AUC) values for detection of febrile subjects. RESULTS: Pearson correlation coefficients for IRT-based and reference (oral) temperatures were found to vary strongly with measurement location. Approaches based on maximum temperatures in either inner canthi or full-face regions indicated stronger discrimination ability than maximum forehead temperature (AUC values of 0.95 to 0.97 versus 0.86 to 0.87, respectively) and other specific facial locations. These values are markedly better than the vast majority of results found in prior human studies of IRT-based fever screening. CONCLUSION: Our findings provide clinical confirmation of the utility of consensus approaches for fever screening, including the use of inner canthi temperatures, while also indicating that full-face maximum temperatures may provide an effective alternate approach.


Assuntos
Temperatura Corporal , Infecções por Coronavirus/diagnóstico , Face/fisiologia , Febre/diagnóstico , Pneumonia Viral/diagnóstico , Termografia/métodos , Adolescente , Adulto , Idoso , Área Sob a Curva , Betacoronavirus , Feminino , Humanos , Raios Infravermelhos , Masculino , Programas de Rastreamento/métodos , Pessoa de Meia-Idade , Pandemias , Guias de Prática Clínica como Assunto , Curva ROC , Reprodutibilidade dos Testes , Adulto Jovem
19.
Plast Reconstr Surg ; 146(4): 416e-419e, 2020 10.
Artigo em Inglês | MEDLINE | ID: mdl-32970000

RESUMO

Volume restoration with autologous fat augmentation has become a key technique in facial rejuvenation. It is highly versatile and useful as an independent operation or as an adjunct to rhytidectomy and blepharoplasty. The goal of this article and the accompanying videos is to provide a detailed step-by-step guide to achieving predictable and optimized surgical results.


Assuntos
Tecido Adiposo/transplante , Técnicas Cosméticas , Face/cirurgia , Ritidoplastia/métodos , Humanos , Rejuvenescimento
20.
Health Lit Res Pract ; 4(3): e166-e170, 2020 Aug 06.
Artigo em Inglês | MEDLINE | ID: mdl-32926172

RESUMO

By mid-May 2020, most of the United States had been under shelter-in-place orders for several weeks to decrease the spread of coronavirus 2019 (COVID-19). As states begin to lift these orders to reopen the economy, the risk of a resurgence of COVID-19 may be related to the public's voluntary adherence to public health recommendations. We conducted a nationally representative survey of 604 African Americans to generate a risk assessment based on African Americans' compliance with public health recommendations to frequently wash hands, maintain social distancing, avoid touching face, and wear a mask in public. This is, to our knowledge, the most comprehensive study of African Americans and public health adherence specific to COVID-19. The percent of respondents reporting that they always comply with these recommendations was 72%, 67%, 55%, and 65%, respectively. Based on this threshold, African Americans' level of adherence with COVID-19 public health recommendations suggests they may be at high risk of a resurgence of COVID-19 during reopening, and there is an urgent need for targeted, culturally responsive public health messaging that is accessible to communities of color to help address racial disparities in COVID-19 risk. [HLRP: Health Literacy Research and Practice. 2020;4(3):e166-e170.].


Assuntos
Afro-Americanos , Infecções por Coronavirus/prevenção & controle , Pandemias/prevenção & controle , Pneumonia Viral/prevenção & controle , Saúde Pública , Betacoronavirus , Infecções por Coronavirus/epidemiologia , Infecções por Coronavirus/virologia , Face , Feminino , Guias como Assunto , Desinfecção das Mãos , Humanos , Masculino , Máscaras , Pneumonia Viral/epidemiologia , Pneumonia Viral/virologia , Medição de Risco , Isolamento Social , Estados Unidos
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