What causes bruxism?

It's commonly thought stress drives all forms of bruxism.

But in fact, the association between being uptight (or concentrating hard) and teeth grinding is clearer for those who grind when awake than for those who display the habit during sleep.

For sleep bruxers, there appears to be links with stress, smoking and lack of sleep but "we can't say with certainty", Professor Peck says.

Anxiety, heavy alcohol use, and sleep disorders like sleep apnoea are also believed to be associated with sleep bruxism.

Some antidepressants can also cause bruxism, though it still isn't clear why this happens.

Read more...http://www.abc.net.au/news/health/2017-05-31/how-can-you-stop-grinding-your-teeth/8562312?section=health