Msweet, even tho I'm an insurance agent I'm speaking to you as an individual who has had various bone breaks and abnormalities.
Make sure you have additional images taken of your jawbone, particularly high density images. Twice I've had bone images taken that displayed the bone as being very thin in density (very thin) yet when taken on a higher quality imaging machine the bone showed to be normal density. So the imaging machine can distort the actual bone density.
Don't let any doctors talk you into bone grafts until you are absolutely convinced you need a graft. Even if your bone is thin in that location I wouldn't jump into a bone graft unless you are experiencing pain or discomfort in the area. For all you know you may have had thin bone in that area since birth. Find out what foods and supplements/vitamins and other alternative treatment that may provide density to that bone area.
Now speaking to you as an agent: My guess is that if their is indeed a problem in your jawbone that would require treatment that there is a good chance your jawbone would be treated like any other bone in the body. I don't see any difference in needing a bone graft in the jawbone than a bone graft in your hip or anywhere else. But then again that's just my opinion. The wording in your policy would be the determinant. Make yourself a pot of strong coffee or whatever else keeps you awake, pull out your policy and start reading.

Most of all best wishes, hope everything turns out the best for you :!: