Answers:
Alot of times it is due to stress. If someone is going through alot they will grind nearby teeth and not even know that they are doing it. I own have alot of patients that enjoy this problem and they hold to enjoy a darkness guard made to sleep contained by so they don't grind in attendance teeth down. You can also dislocate the cohesive from the socket if you grind your teeth unpromising satisfactory and later you will hold to hold surgery to fix it. I have one lenient that wore his teeth down to where on earth the nerves of his teeth be exposed and he have to enjoy several root canal done. Grinding your teeth can do alot of problems.
Alot of the time it is stress. People next to sleep apnea can also do this.
I grind mine severely, daylight and dark. Usually I do it when I am really stressed in the region of something. However, I wear a dark guard every dark and it help near the cheek misery and headache.