Editing Bruxism (section)

==Epidemiology==
There is a wide variation in reported epidemiologic data for bruxism, and this is largely due to differences in the definition, diagnosis and research methodologies of these studies. E.g. several studies use self-reported bruxism as a measure of bruxism, and since many people with bruxism are not aware of their habit, self-reported tooth grinding and clenching habits may be a poor measure of the true prevalence.<ref name="Shetty 2010" />

The ICSD-R states that 85–90% of the general population grind their teeth to a degree at some point during their life, although only 5% will develop a clinical condition.<ref name=ICSD-R /> Some studies have reported that awake bruxism affects females more commonly than males,<ref name="Shetty 2010" /> while in sleep bruxism, males and females are affected equally.<ref name=ICSD-R /><ref name="Macedo 2007 (cochrane rv)" />

Children are reported to brux as commonly as adults. It is possible for sleep bruxism to occur as early as the first year of life, after the first teeth (deciduous incisors) erupt into the mouth, and the overall prevalence in children is about 14–20%.<ref name="Macedo 2007 (cochrane rv)" /> The ICSD-R states that sleep bruxism may occur in over 50% of normal infants.<ref name=ICSD-R /> Often sleep bruxism develops during adolescence, and the prevalence in 18- to 29-year-olds is about 13%.<ref name="Macedo 2007 (cochrane rv)" /> The overall prevalence in adults is reported to be 8%, and people over the age of 60 are less likely to be affected, with the prevalence dropping to about 3% in this group.<ref name="Macedo 2007 (cochrane rv)" />

According to a meta-analysis conducted in 2024, the global prevalence of bruxism (both sleep and awake) is 22.22%. The global prevalence of sleep bruxism is 21%, while the prevalence of awake bruxism is 23%. The occurrence of sleep bruxism, based on polysomnography, was estimated at 43%. The highest prevalence of sleep bruxism was observed in North America at 31%, followed by South America at 23%, Europe at 21%, and Asia at 19%. The prevalence of awake bruxism was highest in South America at 30%, followed by Asia at 25% and Europe at 18%.<ref name="auto"/> The review also concluded that overall, bruxism affects males and females equally, and affects elderly people less commonly.<ref name="Manfredini 2013">{{cite journal |vauthors=Manfredini D, Winocur E, Guarda-Nardini L, Paesani D, Lobbezoo F |title=Epidemiology of bruxism in adults: a systematic review of the literature |journal=Journal of Orofacial Pain |volume=27 |issue=2 |pages=99–110 |year=2013 |pmid=23630682 |doi=10.11607/jop.921|doi-access=free }}</ref><ref name="auto"/>