Navegando por Palavras-chave "temporomandibular joint"
Agora exibindo 1 - 10 de 10
Resultados por página
Opções de Ordenação
- ItemAcesso aberto (Open Access)Avaliação videofluoroscópica da mastigação e deglutição em indivíduos com disfunção temporomandibular (DTM)(Associação Brasileira de Otorrinolaringologia e Cirurgia Cervicofacial, 2012-08-01) Maffei, Carla; Mello, Marçal Motta de; De Biase, Noemi Grigoletto [UNIFESP]; Pasetti, Lilian; Camargo, Paulo A. Monteiro; Silvério, Kelly Cristina Alves; Gonçalves, Maria Inês Rebelo [UNIFESP]; Hospital da Cruz Vermelha Serviço de Motilidade Digestiva; Hospital São Vicente; ORL; Universidade Federal de São Paulo (UNIFESP); Pontifícia Universidade Católica de São Paulo Faculdade de Fonoaudiologia; Hospital Ecoville Serviço de Cirurgia e Traumatologia Bucomaxilofacial; Hospital Santa Cruz; Hospital Angelina Caron Serviço de Residência Médica Departamento de Laringe; Centro Avançado de ORL Serviço de ORL e Cirurgia Cérvico-Facial; Universidade de São Paulo (USP); Departamento de FonoaudiologiaTo study mastication and swallowing disorders in patients with temporomandibular disorders (TMD). OBJECTIVE: To investigate mastication and swallowing disorders in patients with severe TMD referred to surgery. MATERIALS AND METHODS: Clinical and experimental study involving ten individuals with TMD submitted to deglutition videofluoroscopy. These patients did not have posterior teeth, mastication pain and food replacement in favor of pasty consistence food. The assessment of the oral and pharyngeal phases approached the following aspects: side of onset and preferential side for chewing, premature escape, remains of food residues in the oral cavity or in the pharyngeal recesses, number of necessary swallowing efforts, laryngeal penetration and/or tracheal aspiration. RESULTS: During mastication and the oral phase we observed tongue compensatory movements upon chewing (n = 7; 70%), premature escape (n = 4; 40%), food remains in the cavity after swallowing (n = 5; 50%) and an excessive number of deglutition efforts (n = 5; 50%). On the pharyngeal phase we observed food remains in the valleculae (n = 6; 60%), in the pyriform sinuses (n = 4; 40%); laryngeal penetration (n = 1; 10%) and tracheal aspiration (n = 4; 40%). CONCLUSION: TMD patients may have alterations in their chewing and swallowing patterns, with laryngeal penetration and/or tracheal aspiration. The study indicates the need for a multidisciplinary assessment because of dysphagia in TMD patients.
- ItemSomente MetadadadosDistinct Gender-related Sleep Pattern in an Acute Model of TMJ Pain(Sage Publications Inc, 2009-05-01) Schutz, T. C. B. [UNIFESP]; Andersen, M. L. [UNIFESP]; Silva, A. [UNIFESP]; Tufik, S. [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)Since it is recognized that acute inflammation of the temporomandibular joint results in sleep disturbances in male rats, and that the orofacial region may display a site-specific effect of ovarian hormones on nociception, we hypothesized that distinct genders would respond differently when subjected to this inflammatory acute orofacial pain. Sleep was monitored after injection of saline/Freund's adjuvant into the temporomandibular joint in male and female (proestrus and diestrus phases) rats. Progesterone and stress-related hormones were also assessed. in males, Freund's adjuvant induced a significant nociceptive response and sleep disturbances. Behavior and sleep architecture in the females remained unaffected. Our results suggest that females and males present distinct responses to an acute model of orofacial pain.
- ItemSomente MetadadadosEvaluation of oro-facial function in young subjects with temporomandibular disorders(Wiley-Blackwell, 2014-07-01) Kobayashi, F. Y.; Gaviao, M. B. D.; Montes, A. B. M.; Marquezin, M. C. S.; Castelo, P. M. [UNIFESP]; Universidade Estadual de Campinas (UNICAMP); Universidade Federal de São Paulo (UNIFESP)The aim of this study was to evaluate bite force (BF) and oro-facial functions at different dentition phases (initial-mixed, intermediate-mixed, final-mixed and permanent dentition) in children and adolescents diagnosed with temporomandibular disorders (TMDs). the sample was selected from four public schools in Piracicaba, São Paulo, Brazil. of the 289 participants recruited, aged 8-14years old, 46 were placed into the TMD group. TMD was diagnosed using Axis I of the Research Diagnostic Criteria for Temporomandibular Disorders (2011). Oro-facial functions were evaluated using the Nordic Orofacial Test-Screening (NOT-S), which involves both an interview and a clinical examination. BF was measured using a digital gnathodynamometer. Age and body mass index (BMI) were also considered. the data were analysed by the following tests: Kolmogorov-Smirnov test, Student's t-test, Spearman and Pearson coefficients, Qui-square test, Fisher's exact or binomial test, as indicated. Moreover, univariate and multivariable logistic regression were applied. for the TMD group, scores associated with NOT-S interview and NOT-S total were higher than for the control group (P=0 center dot 033 and P=0 center dot 0062, respectively). No differences in BF between genders or groups (0 center dot 05) were detected. Variables included in the multivariate logistic regression were BMI and NOT-S total. Based on this analysis, NOT-S total was associated with TMDs. Reported sensory function was the specific domain within NOT-S interview that established the significant difference between the groups (P=0 center dot 021). the TMD group also had a greater number of alterations in the face-at-rest domain of the NOT-S exam (P=0 center dot 007). Concluding, it did not detect an association between TMDs and either dentition phase or BF. Instead, BF correlated with age and BMI. Oro-facial dysfunction was associated with TMD in the studied sample, but this association may be bidirectional, requiring further researches.
- ItemSomente MetadadadosEvaluation of the lateral pterygoid muscle using magnetic resonance imaging(British Inst Radiology, 2010-12-01) D'Ippolito, S. M.; Wolosker, Angela Maria Borri [UNIFESP]; D'Ippolito, Giuseppe [UNIFESP]; Souza, B. Herbert de [UNIFESP]; Fenyo-Pereira, M.; Universidade de São Paulo (USP); Universidade Federal de São Paulo (UNIFESP)Objectives: the aims of this study were to evaluate the visibility of the lateral pterygoid muscle (LPM) in temporomandibular joint (TMJ) images obtained by MRI, using different projections and to compare image findings with clinical symptoms of patients with and without temporomandibular disorders (TMD).Methods: in this study, LPM images of 50 participants with and without TMDs were investigated by MRI. the images of the LPM in different projections of 100 TMJs from 35 participants (70 TMJs) with and 15 participants (30 TMJs) without clinical signs and symptoms of TMD were visible and analysed.Results: the oblique sagittal and axial images of the TMJ clearly showed the LPM. Hypertrophy (1.45%), atrophy (2.85%) and contracture (2.85%) were the abnormalities found in the LPM. TMD signs, such as hypermobility (11.4%), hypomobility (12.9%) and disc displacement (20.0%), could be seen in TMJ images. Related clinical symptoms, such as pain (71.4%), articular sounds (30.4%), bruxism (25.7%) and headache (22.9%), were observed.Conclusions: Patients with TMD can present with alterations in the LPM thickness. Patients without TMD also showed alterations, such as atrophy and contracture, in TMJ images. Recognition of alterations in the LPM will improve our understanding of clinical symptoms and pathophysiology of TMD, and may lead to a more specific diagnosis of these disorders. Dentomaxillofacial Radiology (2010) 39, 494-500. doi: 10.1259/dmfr/80928433
- ItemSomente MetadadadosExpressão de marcadores relacionados ao potencial de diferenciação celular da articulação temporomandibular (atm) em fetos humanos(Universidade Federal de São Paulo (UNIFESP), 2016-05-31) Pagni, Tacia Catharine [UNIFESP]; Silva, Marcelo Cavenaghi Pereira da Silva [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)This study evaluated the immunohistochemical expression of proteins: OCT-4, NANOG, SOX-2, SOX-5 and STAT-3, which together characterize pluripotent embryonic cells. Methods: Twenty ATMs human fetuses aged between 12 and 20 weeks were used. Samples were dissected, fixed, decalcified, embedded in paraffin, cut and stained with hematoxylin / eosin for localization and subsequent immunohistochemical reaction. Results: NANOG, SOX-5 and STAT-3 showed cytoplasmic and nuclear staining in almost all cell layers of the mandibular fossa (dense connective layer, fibrocartilage, and proliferative bone formation), articular disc and the mandibular condyle (fibrous layer, proliferative, chondrocytes, hypertrophic chondrocytes and bone formation. It was not observed immunostaining for OCT-4 and SOX-2 in temporomandibular joint of human fetuses. Conclusion: Cell populations in this stage of ATM development have no characteristics of pluripotent cells but cells in differentiation.
- ItemSomente MetadadadosFunctional unilateral posterior crossbite effects on mastication movements using axiography(E H Angle Education Research Foundation, Inc, 2005-05-01) Salioni, Marco Antonio Canada [UNIFESP]; Pellizoni, Silmara Elena Papa [UNIFESP]; Guimaraes, Antonio Sergio [UNIFESP]; Juliano, Yara [UNIFESP]; Alonso, Luis Garcia [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)This prospective study investigated the influence of functional unilateral posterior crossbite on mastication movements. The study group included 16 patients (nine girls and seven boys) with functional unilateral posterior crossbite involving three or more posterior teeth. A control group comprised 15 individuals (nine girls and six boys) with normal occlusion and the mean age of both groups was 9.17 years. The mandibular masticatory movements were registered, using computer axiography, for 30 seconds during chewing to determine the preference side of chewing. The patterns of the first, third, and fifth chewing cycles were compared with the preference side to establish whether they would predict the chewing preference side. The extent of the maximal lateral and vertical displacements of the mandible during chewing were compared between study and control groups. This study found that overall the left side was the preferred mastication side in 43.7% of individuals in the study and 46.7% in the control group. There was no relationship between the side of the crossbite and the masticatory preference side (Mc Nemar test, P = .5). No correlation was present between the patterns of chewing movements in the first, third, or fifth cycles. Both study and control groups showed similar maximal lateral and vertical mandible displacement.
- ItemAcesso aberto (Open Access)Immunohistochemical expression of types I and III collagen antibodies in the temporomandibular joint disc of human foetuses(Pagepress Publ, 2011-01-01) Moraes, Luis Otavio Carvalho de [UNIFESP]; Lodi, Fabio Redivo [UNIFESP]; Gomes, Thiago Simao [UNIFESP]; Marques, Sergio Ricardo [UNIFESP]; Oshima, Celina Tizuko Fujiyama [UNIFESP]; Lancellotti, Carmen Lucia Penteado; Rodriguez-Vazquez, Jose Francisco; Merida-Velasco, Jose Ramon; Alonso, Luis Garcia [UNIFESP]; Universidade Federal de São Paulo (UNIFESP); Santa Casa São Paulo; Univ Complutense MadridThe objective was to study the morphology of the articular disc and analyse the immunohistochemical expression of types I and III collagen markers in the temporomandibular joint (TMJ) disc of human foetuses of different gestational ages. Twenty TMJ from human foetuses supplied by Universidade Federal de Uberaba with gestational ages from 17 to 24 weeks were studied. the gestational age of the foetuses was determined by measuring the crown-rump (CR) length. Macroscopically, the foetuses were fixed in 10% formalin solution and dissected by removing the skin and subcutaneous tissue and exposing the deep structures. Immunohistochemical markers of type I and III were used to characterize the existence of collagen fibres. Analysis of the immunohistochemical markers of types I and III collagen revealed the presence of heterotypical fibril networks.
- ItemSomente MetadadadosOro-facial evaluation of women with rheumatoid arthritis(Wiley-Blackwell, 2015-05-01) Hoyuela, C. P. S. [UNIFESP]; Furtado, R. N. V. [UNIFESP]; Chiari, A. [UNIFESP]; Natour, J. [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)Rheumatoid arthritis (RA) is an aggressive articular autoimmune disease that causes deformities and disability. the temporomandibular joint (TMJ) might be affected by this disease. Few controlled studies have evaluated bite force (BF) and oro-facial manifestations of this disease. To characterise oro-facial alterations in patients with RA, correlate these results with clinical and disease activity parameters and correlate BF with hand strength (HS). A cross-sectional study of 150 women was performed, (75 RA patients (RA group) and 75 healthy individuals (control group). the presence of articular sounds, pain on palpation of masseter, temporal and TMJ lateral pole, changes in occlusion, range of mandibular motion, measurement of BF in the incisor and molar regions and assessment of HS were evaluated. in relation to oro-facial evaluation there were statistical differences between the groups. There was correlation between BF and HS, in the RA group, this correlation was consistent in patients with natural teeth. Patients with RA had lower scores (P<005) in the HAQ, DASH and OHIP-14 questionnaires than the control group. Inverse correlations were found between BF and HAQ, but not between BF and DAS-28, DASH and OHIP-14 questionnaires in the RA group. the women with RA presented more signs and symptoms in the oro-facial region and had a lower BF than the women in the control group. BF was inversely correlated with the overall function (evaluated by the HAQ) in the patients with RA, and there were correlations between BF and HS in the RA patients and in the control group.
- ItemSomente MetadadadosQualitative study of young, adult, and aged wistar rats temporomandibular synovial membrane employing light, scanning, and transmission electron microscopy(Wiley-Blackwell, 2012-11-01) Duro, Christiano Cony [UNIFESP]; Ciena, Adriano Polican; De Almeida, Sonia Reginayokomizo; Da Silva Righetti, Marta Maria; Grisolia, Debora de Freitas; Mardegan Issa, Joao Paulo; Pereira da Silva, Marcelo Cavenaghi [UNIFESP]; Watanabe, Ii-Sei [UNIFESP]; Universidade Federal de São Paulo (UNIFESP); Universidade de São Paulo (USP)The aim of this study was to analyze the rat temporomandibular joint (TMJ) synovial membrane at different ages using light, scanning, and transmission electron microscopy. Under light microscopic analysis, the TMJ structures were observed such as condyle, capsule, disk, the synovial membrane collagen type, and cells distribution. in the scanning electron microscopy, the synovial membrane surface exhibited a smooth aspect in young animals and there was an increase with ageing in the number of folds. the transmission electron microscopic analysis showed more synoviocytes in the synovial layer in the young group and still a great number of vesicles and cisterns dilation of rough endoplasmic reticulum in the aged group. in the three groups, a dense layer of collagen fibers in the synovial layer and cytoplasmic extensions were clearly seen. It was possible to conclude that synovial membrane structures in aged group showed alterations contributing to the decrease in joint lubrication and in the sliding between disk and joint surfaces. These characteristic will reflect in biomechanics of chewing, and may cause the TMJ disorders, currently observed in clinical processes. Microsc. Res. Tech. (c) 2012 Wiley Periodicals, Inc.
- ItemSomente MetadadadosRadiological findings and dynamic aspects of stomatognathic structures in Treacher Collins syndrome: Clinical case report(Alliance Communications Group Division Allen Press, 2007-11-01) Ortega, Adriana de Oliveira Lira [UNIFESP]; Zwir, Liete Maria Liarte Figueiredo [UNIFESP]; Ciamponi, Ana Lidia; Guimaraes, Antonio Sergio [UNIFESP]; Alonso, Luis Garcia [UNIFESP]; Universidade de São Paulo (USP); Universidade Federal de São Paulo (UNIFESP)Treacher Collins syndrome usually affects bilateral and symmetric structures that include the orbits, mandible, and ears. the purpose of this report is to describe a clinical case of the syndrome, focusing on the anatomy of the temporomandibular joint, which was assessed using the computed tomography method. Clinical examination included evaluation of mandibular dynamics, investigation of temporomandibular dysfunction, and measurement of bite force. Significant morphological and functional alterations were observed but without significant documented clinical consequences.