The second and main cause lies

stress manifest themselves at night by pressure on the teeth. Professor Unger believes that "the wear of the teeth by bruxism is a consequence of the most troublesome effects of stress on our mouths." As the patient did not realize, these cases are nocturnal very difficult to treat.
Serious consequences 
When it is chronic, grinding teeth causes serious damage to the teeth and jaw. The effects on teeth are worn up to the achievement of nerves even a broken tooth. Then increased sensitivity to sweet or acidic foods and temperature changes.
The gums and jaw-they may also undergo changes resulting from an adjustment to pressure. In the most severe, it can even change the appearance of the face.