Osteoradionecrosis - trouble with area around extracted teeth.

In 2003 I had Stage 4 Tonsil Cancer and went through both chemotherapy and radiation.  The side effects were the usual dry mouth and thyroid problems but since 2014 I have had to have several teeth removed.  I underwent the Hyperbaric Oxygen Therapy before the first teeth were removed.  In January I had another tooth removed and am having an exceedly difficult time getting the area to heal. 

Are there others who are having the same problem and what are you doing about it?