Bigal,
We have a couple of years' experience with Dr. Stack's appliance therapy. We flew across the country to see Dr. Stack. We have very good success with tic reduction--probably 80% overall. We replaced the appliance with two other types of appliances locally after they broke or my son's mouth changed too much for continued use. It's very important to understand that the goal in reducing tics is not necessarily eliminating the "overbite" but in changing how the jaw fits and moves to relieve pressure on the large bundle of nerves that runs behind the jaw and in front of the ear. Usually, the goal is to move the jaw some combination of forward/down. Both "forward" and "down" (jaw more open) have an effect on my son's urges. Moving just the teeth can correct an "overbite" but may or may not have a good effect on this jaw alignment. It could even have a detrimental effect by causing worse jaw alignment. In my son's case, orthodontics will be the second phase of his treatment, to "lock in" the change down the road. We were warned by Dr. Stack that if the orthodontics are done without a knowledgable orthodontist, we could undo all our progress and re-trigger the whole thing.
