Background:The prevalence of temporomandibular disorder (TMD) in children and adolescents is in the range of 6-68% and can be triggered or aggravated by emotional stress.Aim:The study was to investigate the prevalence of TMD in Portuguese children and adolescents and its association with emotional stress.Materials and Methods:The sample comprised 3,260 students aged 5-19 years. The questionnaire was used to assess the presence of TMD, and was applied in a single moment.Results:TMD was observed in 821 (25.2%) students. The most common symptoms of TMD were: if considered tense or nervous (52%), have headaches (36.8%), and habit of clenching or grinding teeth (27.3%). The girls had a 1.36 higher probability of developing TMD than boys (95% CI: 1.14-1.63; p < 0.001); moreover, students from the older age group had a 2.31 higher probability of developing the disorder (95% CI: 1.85-2.89; p < 0.001). Students who considered themselves tense or nervous presented 8.74 higher probability (95% CI: 7.03-10.86; p < 0.001) of developing TMD.Conclusion:This study showed a high prevalence of TMD in children and adolescents in southern Portugal, and revealed a significant association between this dysfunction and the levels of emotional stress. Female students, older students, and those considered tense or nervous have a higher probability of developing TMD.
BACKGROUND/OBJECTIVES There is little objective information regarding nutrition transition in African countries. We assessed trends in nutrition patterns in the Seychelles between 1989 and 2011. SUBJECTS/METHODS Population-based samples were obtained in 1989, 1994 and 2011 and participants aged 25–44 are considered in this study (n = 493, 599 and 471, respectively). Similar, although not identical, food frequency questionnaires (FFQs) were used in each survey and the variables were collapsed into homogenous categories for the purpose of this study. RESULTS Between 1989 and 2011, consumption frequency of fish (5 +/week) decreased from 93 to 74%, whereas the following increased: meat (5 +/week) 25 to 51%, fruits (1 +/week) 48 to 94%, salty snacks (1 +/week) 22 to 64% and sweet snacks (1 +/week) 38 to 67% (P < 0.001 for all). Consumption frequency decreased for home-brewed alcoholic drinks (1 +/week) 16 to 1%, but increased for wine (1 +/week) 5 to 33% (both P < 0.001). Between 2004 and 2011, consumption frequency decreased for rice (2/day) 62 to 57% and tea (1 +/day) 72 to 68%, increased for poultry (1 +/week) 86 to 96% (all P < 0.01), and did not change for vegetables (70.3 to 69.8%, P = 0.65). CONCLUSIONS Seychelles is experiencing nutrition transition characterized by a decreased consumption frequency of traditional staple foods (fish, polished rice), beverages (tea) and of inexpensive home brews, and increased consumption frequency of meat, poultry and snacks. Food patterns also became more varied along with a broader availability of products in the 22-year interval. The health impact of these changes should be further studied.
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