Grinding Teeth

It seemed not stress-related but more food-related, my grinding teeth. I heard my father do it, the sound is like pressing 2 ceramic objects against each other tightly, then slowly sliding one of them away. Of course, with a lot more intensity. Obviously I was doing it myself, one time I was half awoke and found that my jaw clench so tight as if I am chewing. The molars were moved against each other slowly but the action felt so right at the moment, my brain cannot think of any other things to do to make myself more comfortable then.

I was given the dental guard and use it religiously since. However, I sometimes dream about biting into food and found that the guard has stopped me from enjoying the texture.