Is it possible to have a vertical Genioplasty where the bone naturally grows back? (rather than grafting)

We generally do not add any bone graft to genioplasties. The bone will fill in and heal on its own within a few months. It will become fixed in place fairly quickly, but for the bone to be fully healed will take a little longer. We only use grafting material for larger advancements, and it is just to help aid the healing process. It does not factor into the shape/placement of the chin segment.