Bruxism

Bruxism is a disorder that makes the person clenching or grinding teeth during sleep, may cause facial pain, headaches, fracture or wear of the teeth and jaw pain, known as temporomandibular disorders. Almost everyone can have this symptom eventually, but only a small percentage grinds his teeth with a lot of intensity to the point of damaging them, like the jaws.
The episodes can occur eight or more times a night and can easily wake a person sleeping in the same room.
Treatment
Reduce stress, if you suspect an abnormal extresse is causing the problem, relaxation techniques can help.
Heat the muscle of the face, put a hot towel on your face in the morning.
Chew gently, avoid foods such as hard candy, crisp bread and chewing gum;
Taking pain medication, aspirin, aceminofen;
Reduce or eliminate alcohol consumption.
Prevention
There is a plate which can be bruxism acrylic resin or silicone which prevents their teeth make contact with each other. Consult your dentist to see which one is the best treatment to be adopted.