Back from the dentist

Still in pain. X-rays didn't show that it would be justified to start drilling today. But, I had a very interesting experience. The dentist knocked on the teeth trying to determine which one was the actual problem, taking both my feedback (Ouch!) and what she heard from the impact between steel instrument and tooth.
A little research clue like this makes life more bearable when one is told to Go Home and take Two Painkillers every four hours.