 [ Symptoms ] i noticed a burning sensation on my side the redness spread and turned redpurple and still spreading [ Disease ] i hope that by now your extraction site has healed if you still have the problem you must go and have the site looked at exposed bone is not normal it is an indication of problems it might be due to systemic medication you are taking or have taken in the past it might be due to the procedure in any case it has to be examined please go and see your oral surgeon or go to another one for a proper second opinion do not leave this be