I chipped corner of upper back tooth from eating granola cereal. Had absolutely no pain before I chipped tooth and even after the chip, no pain. Went to dentist. She put in a temp. crown. After the crown, I started to feel ache from tooth to ear. After perm. crown, still ache from tooth to ear. she adjusted tooth as it was too high. When I bite down, no pain, but still the ache. Not sensitive to anything hot. One month later, still ache from tooth to ear.