Resumo Introdução: A etiologia da Disfunção Temporomandibular (TMD) é multifatorial e apresenta sintomatologia variada, sendo a dor o sintoma mais comum, o que pode influenciar na qualidade do sono. Objetivo: Este estudo teve como objetivo avaliar a correlação entre a TMD e a qualidade e quantidade de sono. Métodos: Estudo transversal no qual foram selecionadas 60 mulheres entre 18 e 40 anos, portadoras de TMD, diagnosticadas por meio do Critérios de Diagnóstico para Pesquisa das Desordens Temporomandibulares (RDC/TMD), e que responderam ao Índice Anamnético de Fonsecapara classificação quanto ao grau de severidade da disfunção. Para completar a avaliação, cada voluntária respondeu a Escala visual analógica da dor, e duas questões com relação a qualidade do sono, e a quantidade média de horas de sono por noite. Resultados: Verificou-se que quanto mais severa a TMD, menor o número de horas dormidas por noite (r = -0,5663) e 63,33% das voluntárias relataram não dormir bem. Com relação a dor, quanto maior a dor, menor as horas dormidas (r = -0,516) e quanto mais severa a TMD, maior a dor. Conclusão: Observou-se que quanto mais severa a TMD, maior a dor e menor o número de horas que as voluntárias referiam dormir por noite.

Abstract Introduction: Temporomandibular Disorder (TMD) is caused by multiple factors and exhibits various symptoms. Its most common symptom is pain, a factor that can influence the quality of an individual's sleep. Objective: The aim of the present study was to assess the correlation between TMD and sleep. Methods: A cross-sectional study was conducted with 60 women, aged between 18 and 40 years, who had been diagnosed with TMD based on the Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD). Fonseca's anamnestic index (FAI) was used to classify the severity of the dysfunction. To complete the assessment, each volunteer was assessed using the visual analogue scale (VAS) for pain. They also responded to two questions related to their quality of sleep and the average hours of sleep per night. Results: The more severe the TMD, the fewer hours of sleep per night (r = -0.5663). In total, 63.33% of the volunteers reported not sleeping well. Concerning pain, the greater the VAS score, the less hours of sleep (r = -0.516) and the more severe the TMD. Conclusion: It was found that the severityof TMD was correlated with pain symptoms and the number of hours of sleep per night.

INTRODUCTION: Temporomandibular disorders (TMD) present several signs and symptoms that hinder their correct diagnosis, which is imperative on the elaboration of a treatment plan. Over the past years, several studies have been conducted to characterize and classify TMD to better understand these disorders. Therefore, the purpose of this study was to assess the electromyographic behavior of the masseter and temporal muscles in individuals with and without myogenic, arthrogenic and mixed TMD. METHOD: Forty volunteers of both genders responded to the Research Diagnostic Criteria for Temporomandibular Disorders (RDC-TMD) Questionnaire, were submitted to clinical exam and underwent bilateral electromyographic exam of the masseter and temporal muscles. RESULTS: No statistically significant difference (p>0.05) was observed during the assessment of isotonic contraction. Regarding isometric contraction, pairing between the mixed TMD group and the asymptomatic subjects did not present significant difference (p>0.05). Comparison between the myogenic and arthrogenic TMD groups and the asymptomatic group showed statistically significant difference (p<0.05). The findings of the present study demonstrated alteration on the muscle contraction pattern of TMD individuals compared to that of asymptomatic patients.

OBJETIVO: O presente estudo teve por objetivo analisar se o tempo de uso da chupeta influenciava no aparelho estomatognático em crianças que não apresentavam outros hábitos parafuncionais. FORMA DE ESTUDO: Estudo de coorte transversal. MATERIAL E MÉTODO: Para coletar os dados, mães de 90 crianças de três a sete anos responderam a um questionário. As crianças foram divididas em três grupos: não usaram chupeta; usaram até dois anos; usaram até mais de dois anos. RESULTADO: Entre as crianças que não usaram chupeta e naquelas que fizeram uso desta por mais de dois anos, notou-se maior prevalência de dor ou desconforto no aparelho estomatognático. Já as crianças que fizeram uso da chupeta até dois anos, essa prevalência foi menor. CONCLUSÃO: Conclui-se, então, que a chupeta é importante por fazer com que a criança realize movimentos de sucção, preparando-a para a introdução de alimentos sólidos. Porém, se usada por tempo prolongado, pode prejudicar a articulação e, conseqüentemente, a qualidade de vida da criança.

AIM: The goal of the present study was to analyze if the duration of pacifier use influenced the stomatognathic system in children that did not present any other parafunctional habits. STUDY DESIGN: Transversal cohort study. MATERIAL AND METHOD: To collect data, a questionnaire was used and answered by the mothers of 90 children aged three to seven years old. RESULTS: The children were divided into three groups: did not use pacifier; used pacifier until 2 years old; and used pacifier for more than 2 years. Greater prevalence of pain or discomfort in the stomatognathic system was observed among the children who had not used pacifier and the children who had used it for more than 2 years. The prevalence was smaller among the children who used pacifier until 2 years of age. CONCLUSION: Thus, it is concluded that pacifier is important to induce children to perform suction movements, preparing them to the introduction of solid foods. However, if used for a prolonged period of time, it may damage the joint and consequently the child's quality of life.