Bruxism into three groups, namely central or pathophysiological factors, psychosocial factors and peripheral factors. The World Health Organization's International Classification of Diseases 10th revision does not have an entry called bruxism, instead listing "tooth grinding" under somatoform disorders. To describe bruxism as a purely somatoform disorder does not reflect the mainstream, modern view of this condition (see causes). The ICSD-R described three different severities of sleep bruxism, defining mild as occurring less than nightly, with no damage to teeth or psychosocial impairment; moderate as occurring nightly, with mild impairment of psychosocial functioning; and severe as occurring nightly, and with damage to
Habitual be possible origin of habitual "be". Habitual be Habitual "be" is the use of an uninflected "be" in African American Vernacular English (AAVE) and Caribbean English to mark habitual or extended actions, in place of the Standard English inflected forms of "be", such as "is" and "are". In AAVE, use of "be" indicates that a subject repeatedly does an action or embodies a trait. In Standard English, the use of (an inflection of) "be" merely conveys that an individual has done an action in a particular tense, such as in the statement "She was singing" (the habitual being "she sings"). It