Prevalence and potential factors associated with probable sleep or awake bruxism and dentin hypersensitivity in undergraduate students / Prevalência e potenciais fatores associados ao provável bruxismo do sono e em vigília e hiperestesia dentinária cervical em universitários

Objective: To measure the prevalence of probable sleep or awake bruxism and cervical dentin hypersensitivity of undergraduate students and to determine the symptoms associated with these conditions. Methodology: This was a cross-sectional study. A diagnosis of probable bruxism was reached when students reported clenching or grinding of the teeth during sleep and/or wakefulness, and when they also presented some of the signs and symptoms of bruxism and masseter muscle pain on palpation. Cervical dentinal hypersensitivity was diagnosed by testing for sensitivity to pain in the cervical region of the teeth. Pain was triggered either by touch (using a #5 probe) or by an air jet spray. The sample consisted of 306 university students aged between 19 and 35 years old. The data were stored and analysed using SPSS software, version 15.0 for Windows. Result: The prevalence of probable bruxism was 34.3%, with no predominance regarding sex. Probable awake bruxism was more prevalent (61.9%), mostly occurring when the individual reported being in a state of mental concentration (63.1%). There was no association between probable sleep or awake bruxism and dentin hypersensitivity (p = 0.195). Individuals with probable sleep bruxism had increased odds of having muscular pain in the face upon waking (OR = 14.14, 95% CI 5.06-39.55), and those with probable awake bruxism had a increased odds of having facial muscle fatigue when chewing or talking for a long time (OR = 2.88, 95% CI 1.53-5.43) and muscular pain in the face upon waking (OR = 5.31, 95% CI 1.93-14.62). Conclusion: The prevalence of probable bruxism was 34.3% and that of HDC was 57.8%, with 22.2% of these subjects also showing probable bruxism. Individuals with probable bruxism tended to have a higher odds of facial pain when they awakened and when chewing or talking for long periods. There were no associations between probable sleep and awake bruxism and cervical dentin hypersensitivity. .

Objetivo: Mensurar a prevalência de provável bruxismo do sono e em vigília e de hiperestesia dentinária cervical de estudantes universitários e verificar os sintomas a eles associados. Metodologia: Este é um estudo transversal, cujo diagnóstico de provável bruxismo foi realizado pelo relato dos estudantes em ranger e/ou apertar os dentes durante o sono e em vigília combinado com o diagnóstico clínico de desgaste dentário e dor da musculatura do masseter à palpação. O diagnóstico de hipersensibilidade dentinária cervical foi realizado por testes de sensibilidade ao toque com sonda exploradora e a jato de ar da seringa tríplice. A amostra consistiu de 306 universitários entre 19 a 35 anos. Os dados foram armazenados e analisados no programa SPSS v.15.0 for Windows. Resultado: A prevalência de provável bruxismo foi de 34,3%, não havendo predominância entre os gêneros. O provável bruxismo em vigília foi o mais predominante (61,9%), ocorrendo principalmente quando o indivíduo estava em estado de concentração (63,1%). Não houve uma associação entre provável bruxismo do sono e em vigília e hiperestesia dentinária (p=0,195). Os indivíduos com provável bruxismo do sono possuíram maior chance de acordar com dor nos músculos da face (OR=14,14, IC95% 5,06-39,55) e com provável bruxismo em vigília maior chance de cansaço muscular facial ao mastigar ou falar por muito tempo (OR=2,88, IC95% 1,53-5,43) e dor nos músculos da face ao acordar (OR=5,31, IC95% 1,93-14,62). CONCLUSÃO: A prevalência de provável bruxismo foi 34,3% e de HDC 57,8%, com 22,2% destes também apresentando provável bruxismo, mas sem associação estatística. Indivíduos com provável bruxismo tendem a ter maior ...

Fatores de risco relacionados à condição de saúde periodontal em universitários / Risk factors related to periodontal health status in undergraduate students

Introdução: A doença periodontal pode ter seu início na infância e na adolescência, e progredir lentamente ao longo da vida. Em universitários, a forma mais comum e prevalente da doença é a gengivite. Objetivo: Mensurar a condição de saúde periodontal de uma amostra de universitários e verificar existência da associação com variáveis sociodemográficas e os fatores de risco envolvidos. Material e Método: A amostra consistiu de 306 universitários voluntários, com idade entre 19 e 35 anos, sendo usados como indicadores de saúde bucal os índices: Índice Periodontal Comunitário (CPI) e Índice de Dentes Cariados, Perdidos e Obturados (CPO-D). Para processamento e análise dos dados, foi usado o programa SPSS versão 18.0. A classificação da condição periodontal foi dicotomizada em CPI < 3 e CPI ≥ 3.. Realizou-se regressão logística bivariada e multivariada para analisar a associação entre a condição periodontal e as variáveis independentes. Resultado: A amostra consistiu de 51,3% de mulheres e 48,7% de homens, tendo a maioria renda menor do que 6 salários mínimos. Observou-se que 14,4% da amostra era livre de cárie. A pior condição periodontal foi encontrada no sextante 6 e 20,9% da amostra apresentou bolsas rasas em ao menos um sextante. Houve associação entre a condição periodontal e as variáveis: gênero, renda, nível de higiene bucal e uso do fio dental (p < 0,05); entretanto, não houve associação entre aquela e o CPO-D da amostra (p = 0,48). Conclusão: A amostra apresentou leve condição de doença periodontal, com ausência de bolsas periodontais profundas. Indivíduos do gênero feminino, de renda acima de 4 salários, com bom nível de higiene bucal e que usam o fio dental tiveram melhor condição de saúde periodontal.

Introduction: Periodontal disease may have its onset during childhood and adolescence and slowly progress throughout life. In undergraduate students, the most common and prevalent form the disease is gingivitis. Objective: To assess the periodontal health status of a sample of undergraduate studentsand assess a possible association between the disease and socio-demographic variables, as well as the disease's risk factors. Material and Method: The sample consisted of 306 undergraduate students volunteers aged between 19 and 35 years. The oral health indices used were the CPI and DMFT. Data processing and statistical analysis was performed using SPSS® version 18.0 for Windows. The classification of periodontal status was dichotomized in CPI<3 and CPI≥ 3.. Bivariate and multivariate logistic regression analyses were carried out to evaluate the association between periodontal status and the independent variables. Result: The sample consisted of 51.3% female and 48.7% male, mostly with income less than 6 Brazilian minimum salaries. 14.4% of the sample was caries free. The worst periodontal status was in sextant #6 and 20.9% had shallow periodontal pockets in one sextant at least. There was an association between periodontal health status and gender, income, level of oral hygiene and flossing (p <0.05), but not between that and DMFT sample (p = 0.48). Conclusion: The sample showed mild periodontal disease condition, with no deep pockets. Female subjects, who earn more than 4 minimum salaries, with a good level of oral hygiene and who use dental floss had better periodontal health.

Influence of two methods of additional activation on composite resins surface hardness

Aim: To evaluate the influence of two methods of additional activation on the surface hardness of composite resins. Methods: Two types of composites were tested: Filtek P60 and Filtek P350. For each material, 48 specimens were prepared and divided into four groups: Group 1 (control) - conventional activation, using a halogen light for 40 s; Group 2 - conventional activation and additional activation with a halogen lamp for 60 s; Group 3 - conventional activation and additional activation with an autoclave at 127°C for 6 min at 1.7 kg/cm3 pressure; and Group 4 - conventional activation and additional activation with an autoclave at 134 °C for 15 min at 2.1 kg /cm3 pressure. The use of autoclave has been suggested for being a standard equipment at dental offices, and thus, even at locations far from dental laboratories, it would be possible to have simple techniques that allow access to indirect restorations at lower costs. Data obtained in the study were analyzed statistically by analysis of variance followed by Tukey’s test at a 5% level of significance. Results: For Z350, there was a significant increase in hardness for all groups of additional activation (Groups 2, 3 and 4), compared with the control group. For P60, a significant increase in surface hardness was found compared with the control group for the groups that used additional activation with an autoclave (Groups 3 and 4). Conclusions: Additional activation with an autoclave increased the surface hardness of the tested resins to a greater degree than additional activation with a halogen light.