If you have an abscess, you'll feel a lump
in your cheek near there, or if a neighboring tooth
hurts when you push on it, the dentist will have to check THAT tooth out for a cavity. At least you were given penicillin for the ear, it should also take out the bacteria where your wisdoms were, takes a couple weeks for the medicine to work. Also, sometimes when a dentist gives a numbing shot, it'll hit on a nerve and make it feel bad for quite a while, but then it goes away.