0222 Prevalence And Factors Associated To Bruxism In Dentistry Students

Abstract

Introduction: The bruxism is defined as a repetitive activity of chewing muscles characterized by clenching, grinding of teeth or both and has two distinct circadian manifestations, which may occur during sleep or when awake. The most widely accepted criteria for diagnosis of bruxism include self-report of patient's clenching of teeth and characteristic sounds during sleep reported by family and friends. The following signs and symptoms: Abnormal wear teeth, presence of linea alba in the oral mucosa, printing of teeth on the tongue or lips ,fracture of teeth or implants, muscle fatigue, headache in the regions of the temporal muscles, difficulty opening and closing the mouth, especially when waking up. The objective of this study was to estimate the prevalence of bruxism and evaluate the factors associated with this event among undergraduate students in Dentistry, young adults, aged between 18 and 35 years. Methods: A cross-sectional study was conducted with 367 undergraduate students in Dentistry. A simple and probabilistic random sample was considered. The measurement tools employed included: Medical records for data collection and anamnestic evaluation. The concordance statistical test used for inter-and intra-examiner was Kappa with 95% confidence. The exact binomial confidence interval was used to estimate the proportion of people with bruxism in the population and the Pearson test to verify the association between bruxism and other variables collected during the anamnesis. Results: The prevalence of bruxism was 55.3% with 95% confidence. The associations that showed significant relations to bruxism were: Sleep disorders such as feeling no restful sleep and daytime sleepiness (p <0.001), headache (p <0.001), occurrence of snoring (p = 0.041), hyperactivity report (p = 0.041). The gender variable showed no significant association (p = 0.095). Conclusion: Given the magnitude of the results found in the present study, it can be concluded that the prevalence of bruxism was significant, regardless of gender, considering that this study focused on the young adult population. It was also possible to statistically verify the correlation between bruxism and other systemic manifestations.