I would recommend that you contact your orthodontic office to ask for their office policies on broken orthodontic appliances. Prices may vary from office to office. Hope this helps.
For a short time, the graft will work. But as time goes on, the gums will do what ALL gums do: follow bone. The best we can hope for is 5 mm from tip of bone. If bone has shrunk away, the graft won't work in the long run.Bioclear is the best thing to fill black triangles.
Hi, Macaroni4! Thanks for your questions and pictures! I see there is a difference in the size of your upper and lower jaws. I agree with your first orthodontist: the most predictable treatment for your teeth and bite would be orthognathic surgery. However, I'm very aware of the risks and costs...