There is a wide variation in reported epidemiologic data for<unk> , and this is largely due to differences in the definition, diagnosis and research methodologies of these studies. E.g. several studies use self-reported<unk>  as a measure of<unk> , and since many people with<unk>  are not aware of their habit, self-reported tooth grinding and clenching habits may be a poor measure of the true prevalence. 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. Some studies have reported that awake<unk>  affects females more commonly than males, while in sleep<unk> , males and females are affected equally. Children are reported to brux as commonly as adults. It is possible for sleep<unk>  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%. The ICSD-R states that sleep<unk>  may occur in over 50% of normal infants. Often sleep<unk>  develops during adolescence, and the prevalence in 18- to 29-year-olds is about 13%. 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. A 2013 systematic review of the epidemiologic reports of<unk>  concluded a prevalence of about 22.1–31% for awake<unk> , 9.7–15.9% for sleep<unk> , and an overall prevalence of about 8–31.4% of<unk>  generally. The review also concluded that overall,<unk>  affects males and females equally, and affects elderly people less commonly.
Bruxism
Vitalism
Rape trauma syndrome
Manganism
Cherubism
Stiff skin syndrome
Oral galvanism
Mirror syndrome