 The results of this study suggest that Bruxism is common among children aged 7 to 10 years old. Children with Bruxism are more likely to have poor sleep quality, sleep for less than 9 hours per night, feel tired or pain in their facial muscles when they wake up, and experience daytime sleepiness. This article was authored by Eliezer Gomez-Alves, Daniela Malagoni-Fagundes and Merqualo Ferreira.