RESUMO JUSTIFICATIVA E OBJETIVOS: As dores musculoesqueléticas (DME) possuem relação com fatores psicogênicos e qualidade de sono, evidenciando que essa tríade se refere a um processo biopsicossocial. O objetivo deste estudo foi analisar a associação entre má qualidade de sono e DME em adolescentes. MÉTODOS: Realizou-se estudo observacional, com delineamento transversal, no qual foram analisados 545 adolescentes, na faixa etária entre 11 e 15 anos. A qualidade do sono foi avaliada através do Índice de Qualidade do Sono de Pittsburgh (PSQI), a presença de DME pelo Questionário Nórdico de Sintomas Osteomusculares (QNSO), disfunções temporomandibulares pelo Eixo II dos Critérios Diagnósticos de Pesquisa em Disfunção Temporomandibular (RDC/TMD) e a sonolência diurna excessiva através da Escala de Sonolência de Epworth (ESE). Para avaliar associação entre duas variáveis categóricas, foi utilizado o teste Qui-quadrado de Pearson ou o teste Exato de Fisher. RESULTADOS: A prevalência da má qualidade do sono, distúrbios do sono, DME e sonolência diurna excessiva foram 66,8, 9,5, 87,5 e 30,5%, respectivamente. Observou-se associação entre qualidade do sono e quantidade de horas de sono por noite [OR=1,49; (1,01 a 2,21)], e entre distúrbios do sono e DME na parte superior das costas [OR=1,9; (1,0 a 3,3)] e nos punhos e mãos [OR=2,8; (1,4 a 5,7)]. No entanto, não foi verificada associação entre qualidade do sono e DME [OR=1,29; (0,76 a 2,17)]. CONCLUSÃO: Foi verificada associação entre distúrbios de sono e DME, bem como entre qualidade do sono e quantidade de horas dormidas por noite.

ABSTRACT BACKGROUND AND OBJECTIVES: Musculoskeletal pain (MSP) is related to psychogenic factors and quality of sleep, showing that this triad is a biopsychosocial process. The aim of this study was to analyze an association between poor sleep quality and MSP in adolescents. METHODS: This study has an observational, cross-sectional character, in which 545 adolescents, aged between 11 and 15 years, were analyzed. Sleep quality was assessed using the Pittsburgh Sleep Quality Index (PSQI), the presence of MSP using the Nordic Musculoskeletal Questionnaire (NMQ), temporomandibular disorder using the Axis II of the Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD) and excessive daytime sleepiness using the Epworth Sleepiness Scale (ESS). Pearson Chi-square or Fishers Exact test were used to assess the association between two categorical variables. RESULTS: The prevalence of poor sleep quality, sleep disorders, MSP and excessive daytime sleepiness were, respectively, 66.8, 9.5, 87.5 and 30.5%. An association was observed between the quality of sleep and the number of hours of sleep per night [OR = 1.49; (1.01 to 2.21)], and between sleep disorders and MSP in the upper back [OR=1.9; (1.0 to 3.3)], and the wrists and hands [OR=2.8; (1.4 to 5.7)]. However, there was no association between sleep quality and MSP [OR=1.29; (0.76 to 2.17)]. CONCLUSION: An association was found between sleep disorders and MSP, as well as between the number of hours slept per night and quality of sleep.

Abstract Objective: To evaluate sleep quality and excessive daytime sleepiness in undergraduate dentistry students. Material and Methods: This research is characterized as an observational study of transversal type, having analysed undergraduate students in dentistry from a public university in the State of Pernambuco, Brazil. The sample consisted of 325 students enrolled between the 1st and 10th academic semester. Sleep quality was evaluated using the Pittsburgh Sleep Quality Index (PSQI), while excessive daytime sleepiness was analysed through the Epworth Sleepiness Scale (ESS). The t-Student and Mann-Whitney tests were used for the numerical values, with the F-test (ANOVA) or the Kruskal-Wallis test being used to compare more than two categories. Results: It was observed that 71.1% of students presented a poor sleep quality, with more than half of the students exhibiting excessive daytime sleepiness (58.1%). A relationship between sleep quality and the academic semester was verified. However, gender and age were not associated with sleep quality or with excessive daytime sleepiness. Conclusion: A high prevalence of poor sleep quality and excessive daytime sleepiness was observed among undergraduate students in dentistry. The data suggest that the undergraduate degree in Dentistry can influence the students’ quality of sleep, regardless of age or gender.