It will definitely cause tooth discoloration and blackening in the future, because surgical correction of tooth protrusion will cause chronic pulp necrosis, which is only a matter of time. If you do it well, you can stick to it for a few more years. If it causes postoperative infection, it will be very troublesome. I suggest you go to a bigger hospital for consultation, and it is best to find acquaintances, and don't trust the doctor's ideal prognosis.