My dentist told me one time that as adults, we probably have a cracked tooth(teeth).. it may never give us a problem, show up on an xray, or it can split in half while eating mashed potatoes.
It usually started by a jarring injury where our teeth slam together or eating hard foods that we shouldn't have been trying to chew in the first place :roll:
I hope it doesn't give you too much pain until you can get it fixed!