Two years ago, I had a done on my lower right second molar because of some pain and infection. I did not have a crown put in. Two weeks ago, this tooth started to ache. I also noticed that it is slightly higher compared to the other teeth. I went to the dentist today who did some x-rays and the results showed bone loss around the of the tooth. The dentist said we'll wait until the tooth develops some problem then he'll extract it. Should I go to another dentist and seek for a way to save this tooth? I do not want to have an extraction gap and I think is quite expensive. Please advise.