Night molar.

In the sleep habits of a molar or premolar Unconscious when sober habits who called bruxism. The large number of investigations and studies that may be related to the following factors.
(1) emotional tension. Bruxism is the most common risk factors. Fear, anger, hostility, conflict and other various tension, because of various reasons, so that patients with difficult time venting performance, these sentiments in the subconscious of periodically be expressed in various ways, the expression is one of the molars.
(2) local factors. Occlusal early to speculate if there is contact, patients often try to face this high teeth removed, if such a phenomenon occur frequently, over time, will be formed bruxism.
(3) systemic factors. And the parasite-related gastrointestinal disorders, child nutrition deficiency, the Department of Allergy and endocrine disorders can be bruxism the risk factors.
(4) job. Some types of vocational bruxism is conducive to the occurrence. Such as watches and clocks, workers, drivers and athletes accuracy of these requirements or high energy is highly concentrated in the occupational tendency bruxism. However, its causes is not yet clear. Bruxism can be found in a random Chewing gum, tobacco, toothpicks and other habits of the people.