Do you grind your teeth in your sleep? New research is showing that if you do grind, it may be a sign that you are struggling to breathe. For years we thought clenching and grinding was a symptom of stress and/or a "bad bite". This is still a possibility but now I think it is more related to struggling to breathe. We see 2 and 3 year olds grind their teeth. This is not stress or a bad bite. It could be a breathing problem.  Cranky, irritable, kids may be suffering from sleep breathing disorders. A pediatric dentist is your best source for discussing this. For adults, I have had great success with "mouthpieces" to help snoring and sleep apnea . For people who just can't wear their C-PAP machines , mouthpieces have been very helpful. Talk to ypor dentist !!!