My boyfriend keeps grinding his teeth in his sleep. what could it be?

Bruxism: Or teeth grinding is an automated unconscious action of the brain in sleep and is evidence of poor diet. In youth it is trivial and easily stopped but it has been reported in the waking state in an old person with advanced brain disease. So it may be a reminder of "things to come" if simple attention to diet is ignored.

Bruxism: He is doing it unconsciously, usually from stress. He should see his dentist regarding the fabrication of an occlusal guard... This will help him from grinding his teeth away.

Se a dentist: Sleep brutish, grinding during sleep, can be very irritating and it should not be ignored. It can be related to a bad bite, stress, sleep disorder, and more. Sleep can be disrupted for him and you. Grinding can also cause headaches, ear aches, wear and break teeth. Get your boyfriend to a dentist for an evaluation. Typically the treatment is a night guard.

You can read the : Link below about bruxism. http://en.m.wikipedia.org/wiki/bruxism.

Bruxism: Medications prescribed for bipolar could cause bruxism as a side effect . Bruxism also is associated with bipolar disease . Patients experiencing this might need some dental intervention to avoid exssive damage to their teeth . The dentist will prescribe the construction of hard and soft night gaurd.