Abstract
The aim of this study was to verify the correlation of self-reported sleep and awake
bruxism with demographic characteristics, oral behaviors, anxiety, temporomandibular
disorder (TMD) signs and symptoms, sleep quality, and orthodontic treatment history
in dental students. A total of 104 students of Dentistry located in Paraná (South
Brazilian State) answered the following self-administered questionnaires: Oral Behavior
Checklist, State Anxiety Inventory, TMD signs and symptoms questionnaire, and the
Pittsburgh Sleep Quality Index. Associations between possible awake bruxism (AB) and
sleep bruxism (SB) with sleep quality, anxiety, and TMD were analyzed by Poisson Regression
with robust variance. The significance level adopted was 5%. The frequency of AB and
SB was 76% and 55.8%, respectively. A statistically higher frequency of AB was observed
in students who had the following conditions: use of psychotropic medication, physical
activity practitioners, moderate or high level of anxiety, more oral behaviors, sleep
disorders, and sleep bruxism. Sleep bruxism was diagnosed more frequently in students
who presented moderate or high levels of anxiety, oral behaviors, and sleep disorders.
The frequency of TMD reported was higher in students with SB, as well as in those
with AB. In conclusion, lifestyle, moderate and high anxiety levels, and sleep disorders
are associated with a higher prevalence of AB and SB. Furthermore, AB and SB are associated
with a higher frequency of TMD reporting.
Keywords
anxiety - bruxism - sleep bruxism - sleep wake disorders - dental students - lifestyle
