Sleep quality of university students with bruxism-type craniomandibular disorders: An integrative review of the literature

Abstract

Bruxism is characterized by teeth grinding, divided into sleep bruxism and daytime bruxism, and can 
be classified into primary and secondary. The main causative factors are poor sleep quality, stress, 
anxiety, alcohol consumption and smoking. The objective of this study was to investigate, through a 
literature review, the quality of sleep of university students with bruxism. An integrative literature 
review type research was carried out, carried out in the following databases: VHL, Google Scholar, 
SciELO and PuBMeD with the descriptors: Students, Sleep Quality, Poor Sleep Quality, University 
Students, Academics, Bruxism. Searches in electronic databases returned a total of 170 articles, 68 in 
the VHL, 47 in SciELO and 55 in PuBMeD. A total of 5 studies met the eligibility criteria. According 
to selected studies, there is a prevalence of sleep bruxism in adults with obstructive sleep apnea, 
however, the prevalence differs between age group, sex and race, sleep bruxism causes individuals to 
present insomnia, depression, behavioral disorders, REM sleep and sleep-related epilepsy. A 
correlation was found between bruxism during sleep and wakefulness, due to the reuptake of 
serotonin, a hormone that regulates stress. There is a significant association between psychological 
factors and awake bruxism. The research's main obstacles were the scarce source of materials on the 
topic of the correlation between sleep quality and bruxism, making it essential to develop new 
studies on larger population scales.