At Christmas time I was chewing on a tough lolly and my back wisdom tooth pulled out a bit. It healed fine after a few days but it loosened up again on a piece of chewing gum about 3 weeks ago, since then it has been quite painful. I have been trying not to chew on that side but it still doesn't seem to be healing. It is very sore and tender. Should I see a dentist or wait for it to heal itself again?