Generally, the contact between the top and bottom dental arches only occurs when eating or when swallowing saliva which accounts for around 20 minutes a day. But because of stress, some people will clench their teeth for several hours during the day or night, unconsciously, for half of them. Many people will unconsciously grind their teeth during the night. This grinding is called bruxism.
6 to 20% adults suffer from grinding or jaw clenching at some point in life.
In general, bruxism is found in stress or anxious patients. An emotional choc can be a trigger point, such as the loss of a job, mourning or a divorce. Introverted individuals seem to be more subject to bruxism. It seems to be a way of externalising their feelings.
You may experience some of these symptoms if you suffer from bruxism:
Bruxism causes a premature and abnormal wearing of the contact surface of the teeth. This can in turn cause the teeth roots to be exposed making them more sensitive to hot and cold.
The pressure caused by bruxism can lead to cracks or even fractures in previously healthy teeth. If not treated in time, the enamel of the teeth can disappear completely, as if it had been ground away. The dentin then disappears, exposing the pulp (which contains the nerve) to a wide range of external influences
The decrease in tooth height due to wear leads to a disturbance in the relationship between the upper and lower jaws: the lower jaw slides forward, giving the impression that the chin has moved forward considerably.