A articulação temporomandibular apresenta uma complexidade morfofuncional de destaque no organismo humano. Muitas técnicas podem ser utilizadas para o exame das ATMs, no entanto, a ressonância magnética é considerada atualmente a modalidade de exame mais indicada para o estudo da ATM devido a possibilidade do estudo dos tecidos moles, sem a utilização de radiação ionizante. Entretanto, a TC destaca-se principalmente quando são necessários estudos das estruturas anatômicas e suas variações, bem como das afecções que a acometem, dentre os quais os processos degenerativos. Sendo assim, ambas as técnicas de imagem se tornaram padrão para o exame da ATM e se complementam. Diante do conceito de radioproteção do paciente, foi observada a necessidade de testar se as imagens por RM também podem ser úteis para o diagnóstico das alterações ósseas da ATM, com a vantagem de fornecer as imagens de tecidos moles e não ser ionizante. Foram avaliadas imagens de RM e TC de ATM de 56 pacientes sintomáticos (46 do gênero feminino e 10 do gênero masculino, nas faixas etárias entre 18 e 83 anos; média de 43 anos de idade). Foi definido um nível de significância de 0,05 (5%). Todos os intervalos de confiança foram construídos com 95% de confiança estatística. Encontramos relação estatisticamente significante entre os exames de RM e TC em diversas variáveis. Sendo que a acurácia, sensibilidade e especificidade da RM em detectar alterações ósseas se mostrou estatisticamente significante na maioria das variáveis estudadas, sugerindo que é um exame confiável quando se trata de tais alterações. / The temporomandibular joint presents an outstanding morphofunctional complexity in the human organism. Many techniques can be used for the examination of TMJ, however, magnetic resonance imaging is currently considered the most appropriate exam for the study of TMJ due to the possibility of studying soft tissue without the use of ionizing radiation. However, CT stands out mainly when studies of the anatomical structures and their variations are necessary, as well as the alterations that affect it, among which degenerative processes. Thus, both imaging techniques have become standard for TMJ examination and complement each other. In view of the concept of radioprotection of the patient, it was observed the need to test if the MRI may also be useful for the diagnosis of TMJ bone alterations, with the advantage of providing soft tissue images and not being ionizing. MRI and CT images of TMJ were evaluated from 56 symptomatic patients (46 females and 10 males, aged 18-83 years, mean age 43 years). A significance level of 0.05 (5%) was defined. All confidence intervals were constructed with 95% statistical confidence. We found a statistically significant relationship between MRI and CT exams in several variables. Since the accuracy, sensitivity and specificity of MRI in detecting bone changes were statistically significant in most of the studied variables, suggesting that it is a reliable test to evaluate this alterations.

In order to investigate growth modifications of the temporomandibular joint (TMJ) during dentofacial orthopaedic treatment, various functional appliances have been used to prompt the mandible into a protrusive position in various animal experimental models. The general purpose of this project was (i) to test the effectiveness of a functional appliance specially designed for sheep; (ii) to clarify whether or not forward mandibular displacement in sheep is associated with faster and/or redirected condylar growth; (iii) to evaluate the sheep as a model for dentofacial orthopaedic research by comparing the similarities of mandibular condylar growth in sheep and humans; (iv) to detail the position of the mandible during forward mandibular posturing and the effects of mandibular forward displacement on modelling and remodelling of the mandibular condyle. The specific purpose of this project was to reveal whether functional appliance treatment increases the quantity of bone formed during the treatment, or changes the distribution of the bone, or both. Eight, 4-month old, castrated male Merino sheep were randomly assigned to experimental or control groups with 4 in each group. Cast functional appliances were fabricated for the animals in the experimental group. The treatment period was 15 weeks. Calcein (day 1) tetracycline (13 weeks) and alizarin red S (3 days before sacrifice) fluorochromes were administered to all animals. Dental casts, endosseous implant markers and cephalograms were used to analyse the 3-D displacement of the mandible. Undecalcified mid-sagittal sections of TMJ were used to evaluate the tissue responses induced by the appliances. Dynamic parameters of bone formation, static indices of bone-forming and resorbing activity as well as structural indices of trabecular bone were estimated using histomorphometry. The trabecular bone was sampled from two regions: (i) a subchondral region; (determined by 2nd and 3rd labels), believed to comprise bone newly-formed during the experimental period; and (ii) a central region (labelled by all the three fluorochromes), believed to comprise bone which existed before the experiment. The cortical bone was divided into anterior and posterior regions for analysis. The weight of the animals was measured monthly to monitor their growth. Metacarpus growth was also evaluated. During the experimental period, the animals were found to maintain their weight within the normal range and grew normally. The appliance was found to displace the mandible to a downward and forward position with a net condylar displacement of 2.4 mm. The observed adaptive responses in the TMJ induced by the appliances included; the condylar process was less tapered and rounder in the experimental group than in the controls, and anteriorly thickened condylar cartilage and a thickened compact bone layer along the anterior surface of the posterior wall of the glenoid fossa. The mandibular condylar growth vector in sheep was found to be in a postero-superior direction. Condylar growth in the control sheep during the experimental period varied from 8.8 to 11.9 mm, with the mean being 10.6 mm, which is quantitatively similar to two years of condylar growth in human adolescents. In the experimental sheep, the condylar growth varied from 8.5 to 13.3 mm, with the mean being 11.4 mm. When metacarpal growth and weight gain were taken into consideration using multivariant analysis, the coefficients for growth in the postero-superior and posterior direction were found to be high, with adjusted r2 as 0.84 and 0.82 respectively. The induced condylar growth was estimated to be largest in the posterior direction (2.3 mm), which is also similar to previous reports in humans. Regional differences in adaptive response within the mandibular condyle were found in this study. In the experimental group, bone volume fraction (BV/TV) of the subchondral regions decreased, although the specific bone surface and bone formation rates increased. This low BV/TV was associated with decreased trabecular thickness and increased trabecular separation. In the central region of the experimental group's condyle, BV/TV was unchanged. However, an increased osteoid surface (OS/BS) was defined when the eroded surface (ES/BS) was taken into consideration. The sheep were found to cope well with the experimental procedures and the appliance used in this study has been effective in inducing adaptive responses in the TMJ. Consequently, it is believed that the sheep is an appropriate animal model for quantitative histological analysis of the responses to functional appliance treatment. The first null hypothesis, that functional appliance treatment has no effect on bone matrix mineralisation was rejected. The second null hypothesis, functional appliance treatment has no effect on the mineralisation lag time, was rejected. The results indicated that the treatment effects of functional appliances involve reorganisation of the TMJ through bone modelling and remodelling. An important mechanism of functional appliance treatment is, therefore, suggested to be a change in the distribution of bone rather than an increase in the quantity of bone. Posterior rotation of the principle tensile strain angle (Et) suggested an posteriorly altered direction of the condylar growth. Increased new bone formation in the glenoid fossa suggested an anterior re-positioning of the temporomandibular joint. / Thesis (Ph.D.)--Dental School, 2002.

Temporomandibular disorders (TMD) embrace pain and dysfunction in the temporomandibular joint (TMJ) and jaw muscles. TMD is a prevalent condition in the population and constitutes a significant health problem. Knowledge of factors influencing the onset and course of TMD is important in preventive care and development of treatment strategies as well as in clinical decision making. The aim of this thesis was to gain knowledge of whether variations in dental occlusion, bruxism, spinal pain and gender predicted the development and course of TMD. The study population comprised 371 undergraduate dental students. A questionnaire was used to obtain case histories. Clinical examination included the function of the TMJ, jaw muscles, maximal jaw mobility, the morphological occlusion, and contact patterns in centric and eccentric positions. The examinations were performed at start, and after 12 and 24 months. In total, 280 subjects were examined at all three occasions. The incidence of TMJ pain and dysfunction was high among both males and females. The course composed onset, recovery and maintenance resulting in a fluctuating pattern. Females were more likely to have persistent TMJ pain and dysfunction than males. The incidence and persistence of jaw muscle signs and symptoms was high and significantly more common in females. A similar fluctuating pattern as for TMJ pain and dysfunction was found. Crossbite predicted onset and persistence of TMJ pain and dysfunction; mandibular instability in centric positions predicted persistent TMJ pain and dysfunction, as well as persistent jaw muscle signs or symptoms. Reported bruxism increased the risk for TMJ pain and dysfunction but did not significantly affect the course of jaw muscle signs and symptoms. Spinal pain at baseline predicted the onset of jaw pain, headaches, and TMD pain. Signs of TMD at baseline predicted the onset of non-pain symptoms of TMD, jaw pain, headaches, and spinal pain. In conclusion, the results in this thesis show high incidence rates for TMD, headaches, and spinal pain among dental students. Crossbite, mandibular instability, reported bruxism, as well as female gender were identified as contributing risk factors. Spinal pain and TMD mutually predicted each other, indicating common pathophysiological mechanisms and individual vulnerability. The findings support a multidisciplinary approach, and it is recommended that the status and function of the jaw system be considered in patients with spinal pain.

No description available.

Darbo objektas: Smilkininio apatinio žandikaulio sąnario funkcijos sutrikimai ir jų ryšys su viršutiniu kryžminiu sindromu. Darbo tikslas: Nustatyti ar moterų smilkininio apatinio žandikaulio sąnario funkcijos sutrikimai susiję su viršutiniu kryžminiu sindromu. Darbo uždaviniai: 1. Nustatyti tiriamųjų smilkininio apatinio žandikaulio sąnario judesio amplitudę, traškesį, skausmą ir apatinio žandikaulio nukrypimą esant viršutiniam kryžminiam sindromui. 2. Nustatyti tiriamųjų pečių lanko ir kaklo raumenų skausmą, ilgį, jėgą, ištvermę bei galvos padėtį esant viršutiniam kryžminiam sindromui. 3. Nustatyti smilkininio apatinio žandikaulio sąnario funkcijos sutrikimų ir viršutinio kryžminio sindromo ryšį. Hipotezė: smilkininio apatinio žandikaulio sąnario funkcijos sutrikimai susiję su viršutiniu kryžminiu sindromu. Rezultatai: 1 grupės moterys turi skaudamus pečių lanko ir kaklo raumenis, o 2 grupės – neturi. Grupės gautais tyrimo rezultatais statistiškai panašios (p>0,05), tačiau kaklo skausmo bei galvos sukamųjų raumenų, trapecinio raumens viršutinių dalių, didžiųjų ir mažųjų krūtinės raumenų skausmo įvertinimo rezultatais grupės tarpusavyje yra statistiškai skirtingos (p<0,05). Išvados: 1. Esant viršutiniam kryžminiam sindromui 50 proc. atvejų smilkininio apatinio žandikaulio sąnario judesių amplitudė buvo normali ir tik 20 proc. - žymiai sutrikusi. Esant pečių lanko ir kaklo raumenų skausmingumui dažniau pasireiškia smilkininio apatinio žandikaulio sąnario traškesys, skausmas... [toliau žr. visą tekstą] / Object: Disorders of temporomandibular joint function and relation with upper crossed syndrome. Aim: Assess women disorders of temporomandibular joint function relation to upper crossed syndrome. Tasks: 1. Set the test of temporomandibular joint range of motion, clicking, pain, mandibular deviation in the upper crossed syndrome. 2. Set the test of shoulder girdle and neck muscles pain, length, strength, endurance of the deep neck flexors and the position of the head in the upper crossed syndrome. 3. Set of relation between the temporomandibular joint dysfunctions and upper crossed syndrome. Hypothesis: disorders of temporomandibular joint function are related to upper crossed syndrome. Results: Women in the first group have trigger points in neck and shoulder girdle muscles, women in the second group haven’t muscle pain. Groups are statistically similar (p>0,05), except the results of neck pain, pain in sternomastoid, upper trapecius, major pectoralis, minor pectoralis muscles between the groups, showed that 1 and 2 groups are statistically different (p<0,05). Conclusion: 1. In the upper crossed syndrome are 50% cases of normal temporomandibular joint range of motion and only 20% - significantly impaired. Women with shoulder girdle and neck muscles pain had more often signs of clicking, pain in temporomandibular joint, bruxism and mandibular deviation during the movement. 2. In the upper crossed syndrome women felt muscle pain more often, have shortened m. pectoralis major, m... [to full text]

Made available in DSpace on 2014-06-11T19:23:35Z (GMT). No. of bitstreams: 0 Previous issue date: 2008-01-16Bitstream added on 2014-06-13T18:09:51Z : No. of bitstreams: 1 carrascosa_ac_me_fcf.pdf: 1827101 bytes, checksum: 3f6f75bb5ba0a612cc82c9d3baeb6bde (MD5) / Universidade Estadual Paulista (UNESP) / O objetivo deste trabalho foi estudar a relação entre a alimentação e a dor miofascial crônica, além da influência dos fatores psicológicos e psicossociais nesta relação. Para tanto, o mesmo foi dividido em quatro capítulos, sendo o primeiro uma revisão bibliográfica sobre a presença de disfunções temporomandibulares e sua possível implicação na alimentação e nutrição dos portadores. No segundo capítulo estuda-se a confiabilidade da versão em português do Critério de Diagnóstico na Pesquisa para Desordens Temporomandibulares (RDC/TMD) – Eixo II. O terceiro capítulo busca caracterizar os aspectos psicológicos e psicossociais apontados por um grupo de mulheres com dor miofascial crônica (n=37), atendidas em uma Clínica de Fisioterapia do município de Araraquara, SP. Utilizou-se o Eixo II do RDC/TMD e realizou-se estudo de correlação entre os domínios do instrumento. O quarto capítulo comparou a alimentação de mulheres com dor miofascial (n=37) e sem dor miofascial (n=36), com relação ao consumo energético, de macronutrientes (carboidratos, proteínas e lipídios) e fibras e verificou a relação entre os domínios do Eixo II do RDC/TMD e o consumo energético, de macronutrientes e fibras no grupo de mulheres com dor miofascial / The aim of the research described herein was to investigate the connection between chronic myofascial pain and eating behavior, as well as the effects of psychological and psychosocial factors on this relation. This dissertation has four chapters, the first consisting of a bibliographic review of the occurrence of temporomandibular disorder and its possible implications regarding the eating and nutrition of sufferers. In the second chapter, the reliability of the Portuguese language edition of the Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD) Axis II questionnaire is discussed. The third chapter is an attempt to address the psychological and psychosocial issues identified by a group of women with chronic myofascial pain (n=37) treated at a Physiotherapy Clinic in the city of Araraquara, SP, Brazil. Employing the RDC/TMD Axis II questionnaire, a study is made of correlation between the various Axis II domains. The four chapter compares the food eaten by women with (n=37) and without (n=36) myofascial pain, with respect to the consumption of energy, macronutrients (carbohydrates, proteins and lipids) and fiber. The existence of a correlation between the several domains of Axis II and the intake of energy, macronutrients and fiber by the group of women with myofascial pain was tested.

The temporomandibular joint supports and it accommodates occlusion adaptations, muscular and cervical, and any unfavorable condition can unchain alterations in the mandibular movements that point damages so much in the articulation of the speech, as in the quality or the voice. The aim of this study was to characterize the individual s voice with signs and symptoms of temporomandibular dysfunction. There were included 43 individuals, adults, female gender, divided into two groups, study group with individuals with signs of temporomandibular dysfunction and health control group formed by individuals without any symptom of TMD. Both groups were evaluated through a questionnaire made by Fonseca et al. (1994), specific clinic exam to verify the presence of symptoms of TMD, application of a voice questionnaire, ear, nose and throat evaluation, stomatognatic system evaluation, hearing exam and voice recording in a digital recorder for a perceptive-hearing and voice acoustics post analysis. In the perceptive-hearing evaluation, the voice type, the pitch, the loudness and the resonance focus were considerated. In the acoustic evaluation, the wide band and narrow band spectrography and the Kay Elementrics Multi Dimensional Voice Profile (MDVP) software were considerated. The obtained results, after the evaluations, were statiscally analyzed by the square-qui test to the significance level (0,05). After the comparison of the studied parameters between the study group and the health control group, we concluded that the perceptive-hearing voice analysis showed that there was a statistically significant difference in the vocal type and in the resonance focus of the voice in the individuals of the study group. The hoarse vocal type was the predominant one, followed by the breathy and rough. The laryngopharynx resonance focus was the one that showed up more frequently, followed by the pharynges. In refashion of the presence of pain in the temporomandibular articulation, the lateral aspect of this joint showed statistically significant difference in the perceptive-hearing evaluation of the voice for the reduction of loudness in the individuals of study group. The acoustic analysis of the voice in the wide band and narrow band spectrography showed statistically significance difference for the increase of noise presence in the voice of the individuals of study group. In the wide band spectrography, the presence of pain in trapeze muscle didn t interfere in the resonance of the voice in the study group individuals. The presence of pain in the cervical muscles, masseter muscle and temporalis muscle was significant for the voice alteration in the study group, in wide band spectrography. The presence of pain in the masseter muscle showed statiscally significant for the noise increase in the narrow band spectrography. Therefore, the individuals with complaint and symptoms of TMD have more tendency to have vocal disorders. / A articulação temporomandibular suporta e acomoda adaptações oclusais, musculares e cervicais, porém qualquer condição desfavorável pode desencadear alterações nos movimentos mandibulares que apontam prejuízos tanto na articulação da fala como na qualidade da voz. O objetivo deste estudo foi caracterizar a voz de indivíduos com queixa e sintomatologia de disfunção temporomandibular. Para isso, foram incluídos 43 sujeitos adultos, do sexo feminino, divididos em dois grupos, o grupo de estudo (GE), formado por sujeitos com sintomatologia de DTM, e o grupo-controle (GC), formado por sujeitos sem sintomatologia de DTM. Ambos foram avaliados a partir da aplicação de um questionário de índice anamnésico, exame clínico específico para verificação da presença de sintomatologia de DTM, aplicação de anamnese de voz, avaliação otorrinolaringológica, avaliação do sistema estomatognático, exame audiológico, e gravação digital da voz para posterior análise perceptivo-auditiva e acústica. Na avaliação perceptivo-auditiva, foram levados em consideração o tipo vocal, o pitch, a loudness, e o foco ressonantal. Na avaliação acústica, foram consideradas as espectrografias de banda larga e banda estreita e o Programa da Kay Elementrics Multi Dimensional Voice Profile. Os resultados obtidos, após as avaliações, foram analisados estatisticamente pelo teste do qui-quadrado para independência, ao nível de significância 0,05. Concluiu-se que houve diferença estatisticamente significativa no tipo vocal e no foco de ressonância da voz nos sujeitos do GE. O tipo vocal rouco foi predominante, seguido pelos tipos soproso e áspero. O foco de ressonância laringofaríngeo foi o mais evidenciado, seguido pelo faríngeo. Em relação à presença de dor na musculatura da ATM, o seu aspecto lateral mostrou diferença significativa para a redução da loudness nos sujeitos do GE. Na espectrografia de banda larga e banda estreita, houve diferença significativa para a presença de aumento de ruído na voz dos sujeitos do GE. Na espectrografia de banda larga, a presença de dor no músculo trapézio mostrou-se uma variável não interferente na ressonância da voz dos sujeitos do GE. A presença de dor nos músculos cervicais posteriores, no músculo masseter profundo, e no músculo temporal médio foi significativa para a alteração na qualidade vocal dos sujeitos do GE, na espectrografia de banda larga. A presença de dor no músculo masseter profundo apresentou significância estatística para o aumento da presença de ruído na espectrografia de banda estreita. Portanto, os sujeitos com sintomatologia de DTM apresentaram maior índice de alterações vocais.

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / Generalized joint hypermobility (GJH) is an extreme variation of normal joint mobility and it is considered a benign and non- pathological phenomenon. Among its manifestations are the reduction of the proprioception and, consequently, of the motor coordination. It is believed that the temporomandibular joint (TMJ) is amongst the joints affected by GJH . This fact instigated this research, which propose to evaluate the influence of GJH on the TMJ, the stomatognathic functions of mastication and deglutition, and dental occlusion in women. Forty three women participated, voluntarily, in the study conducted at the Speech-Language-Hearing Service of UFSM. The HAG was assessed according to the criteria of Carter and Wilkinson, modified by Beighton and, based on the scores obtained in this scale, the volunteers were distributed into two groups: with GJH (GH, n=17) and without GJH (GSH, n=26). The signs of TMD were examined according the instrument Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD); mastication and deglutition were assessed through myofunctional orofacial exam (MBGR protocol Marchesan, Berretin-Felix, Genaro, Rehder, 2009); and the occlusion evaluation comprised: the Angle Class, presence of overbite, overjet, openbite or crossbite, pattern of desocclusion and occlusal interference. The analyzed results showed prevalence of clicks during jaw movements (52.9%) and mouth opening deviation (76.5%) in the GH. The mastication pattern appeared abnormal in 48,1% of volunteers of GH, and there was a significant association between the mastication pattern and the mouth opening pattern, only in the GSH (p=0.05). Regarding occlusion, no volunteer had an ideal occlusion and there was no significant difference between the groups in the Angle Class. Higher percentage of changes in the occlusion was observed in the GH (29.4 % of overbite, 47.1% of overjet and 17.6% of crossbite), with statistically difference of crossbite in the GH (p=0.05). These findings suggest that women with GJH have a reduction of the proprioception and, consequent impairment of the joint stability and the neuromuscular coordination. Moreover, the occlusal changes in women with GJH may be resulting from the connective tissue fragility present in this condition. / A hipermobilidade articular generalizada (HAG) representa uma variação extrema da mobilidade articular normal e é considerada um fenômeno benigno e não patológico. Entre as suas manifestações estão a redução da propriocepção, e consequentemente, da coordenação motora. Acredita-se que a articulação temporomandibular (ATM) esteja entre as articulações acometidas pela HAG. Este fato instigou esta pesquisa, que se propôs avaliar a influência da HAG sobre a ATM, as funções estomatognáticas de mastigação e deglutição e a oclusão dentária em mulheres. 43 mulheres participaram, voluntariamente, da pesquisa, realizada no Serviço de Atendimento Fonoaudiológico da UFSM. A HAG foi avaliada conforme os critérios de Carter e Wilkinson, modificados por Beighton e, a partir dos escores obtidos nessa escala, as voluntárias foram distribuídas em dois grupos: com HAG (GH n=17) e sem HAG (GSH n=26). Os sinais de DTM foram examinados conforme o instrumento Critérios de Diagnóstico para Pesquisa de Desordens Temporomandibulares (RDC/TMD); as funções de mastigação e deglutição foram avaliadas por meio do exame miofuncional orofacial (protocolo MBGR Marchesan, Berretin-Felix, Genaro, Rehder, 2009); e a avaliação da oclusão compreendeu a classificação de Angle, presença de sobremordida, sobressaliência, mordida aberta ou cruzada, padrão de desoclusão e interferências oclusais. Os resultados analisados demonstraram predomínio de ruídos articulares durante movimentos mandibulares (52,9%) e de desvio na abertura da boca (76,5%) nas voluntárias do GH. O padrão de mastigação apareceu alterado em 48,1% das voluntárias do GH, e foi verificada uma associação significativa entre o padrão de mastigação e de abertura da boca, apenas no GSH (p=0,05). Quanto à oclusão, nenhuma voluntária apresentou uma oclusão ideal e não se verificou diferença significativa na Classe de Angle entre os grupos. As alterações na oclusão obtiveram percentual maior no GH (29,4% de sobremordida, 47,1% de sobressaliência e 17,6% de mordida cruzada), com diferença significativa na mordida cruzada no GH (p=0,05). Estes achados sugerem que as mulheres com HAG apresentam uma redução da propriocepção e, consequente, comprometimento da estabilidade articular e coordenação neuromuscular. Além disso, as alterações oclusais em mulheres com HAG, podem ser decorrentes da fragilidade do tecido conjuntivo presente nessa condição.

Made available in DSpace on 2014-06-11T19:28:58Z (GMT). No. of bitstreams: 0 Previous issue date: 2006-02-16Bitstream added on 2014-06-13T18:35:13Z : No. of bitstreams: 1 hamata_mm_me_araca.pdf: 1154614 bytes, checksum: aeddf157add6e91da7b73e35970a0b5f (MD5) / A posição de relação central (RC) para a confecção de placas oclusais é muito discutível. Dessa forma, quando existe estabilidade oclusal, a máxima intercuspidação (MI) poderia ser utilizada como ponto de referência, eliminando a necessidade de registro interoclusal. O presente trabalho tem por objetivo comparar a efetividade de placas oclusais confeccionadas a partir de modelos articulados nessas duas posições. Para isso, 20 pacientes com desordens temporomandibulares (DTM) e dor de origem muscular foram divididos em dois grupos de 10 e tratados com placas confeccionadas nas posições de MI ou RC. Estes foram avaliados por meio de exame clínico, eletrognatográfico e eletromiográfico, antes e após três meses de terapia. Os resultados permitiram verificar que os dois tipos de placa atuaram de forma semelhante. Entretanto, a confecção de placas oclusais a partir da MI mostrou ser uma técnica mais fácil e menos onerosa do que a de RC. / Centric relation (CR) position to fabricate occlusal splints is very discussable. In this way, when there is occlusal stability, intercuspal position (IP) could be used as a reference point, eliminating the interocculsal record necessity. The purpose of the present study was to compare the effectiveness of occlusal splints fabricated from models articulated in these two positions. Twenty patients with temporomandibular disorders (TMD) of myogenous origin were divided in two groups with 10 each, which were treated with splints fabricated in the CR or IP. The patients were evaluated by clinical, electrognathographic and electromyographic examinations, before and tree months after the therapy. Results showed similar levels of effectiveness of both kinds of splint. However, the fabrication of the splints from IP technique is easier and less onerous than the CR.

Orientador: Daniela Aparecida de Godoi Gonçalves Gonçalves / Resumo: Introdução: A disfunção temporomandibular (DTM) dolorosa em crianças e adolescentes pode causar um impacto negativo na vida desses indivíduos. A presença de comorbidades associadas à DTM tende a tornar a dor persistente e favorecer sua cronificação. Objetivo: Investigar a presença de doenças sistêmicas e dor no corpo regional e espalhada e sua relação com a DTM dolorosa. Material e Método: O presente estudo é de modelo observacional, do tipo transversal. A amostra foi composta por 412 adolescentes, com 12-14 anos de idade, regularmente matriculados em escolas da cidade de Araraquara-SP. A amostra foi caracterizada de acordo com os critérios do Instituto Brasileiro de Geografia e Estatística (IBGE). A DTM foi classificada de acordo com os Critérios de Diagnóstico para Pesquisa das Disfunções Temporomandibulares (RDC/TMD). A presença de dor nas costas e outras regiões foi avaliada de acordo com o Questionário Nórdico Padronizado, e o Questionário de Condição Médica do Adolescente foi utilizado para verificar a presença de doenças sistêmicas. A maturação sexual foi avaliada por meio da Escala de Estágios Pubertais. Exame intraoral foi realizado para avaliação da saúde bucal e identificação de possíveis fatores de exclusão. Para testar as associações de interesse foram utilizados o teste de Mann Witney para variáveis quantitativas, e o teste do qui-quadrado e o exato de Fisher para as variáveis qualitativas. Foi considerado o nível de significância de 5%. Resultados: A amostra fi... (Resumo completo, clicar acesso eletrônico abaixo) / Mestre