Anita, I have an area that the bone is somewhat exposed as well. I have problems with bone chips trying to work their way to the surface and lodging into the gum. Major pain from that.....
What I then have to do is have the dentist go in and remove the bone chip and smooth out the bone again. This has been going on for 6 years. Mine never healed over but it did get better as the years passed. They tried hyperbarrics and that did not work to heal it over. I hope this helps somewhat.
David