If you're like most people you answered "no". Most people feel they do not clench or grind their teeth and yet often times we as dental professionals see evidence to the contrary. Saying you don't grind your teeth is like saying you don't have dreams. You are asleep when those things occur, and are unaware that they are happening. There are some signs you can look for, do your teeth appear to be flat or short and stubby,

or do you have notches at the gum line?

Take a close look if you have either of these conditions in your mouth you are probably clenching or grinding your teeth without even knowing it. There are things that you can do to protect your teeth and your jaw joints from the enormous pressure you are putting on them but you need to ask your dentist which is right for you. Putting off asking increases the amount of irreversible damage that is done so don't wait if you even think it's possible that you are a secret grinder. In fact if you are not sure the next time you are in the office ask! The teeth you save will be your own.