Many friends who brush their teeth not only have teeth problems, but also have mandibular protrusion problems. Therefore, simply straightening your teeth can't restore your prominent maxillofacial region to its normal position. So, first of all, you need to know whether you want to change your teeth or your protruding chin. If you simply correct your teeth, it will be very troublesome to correct mandibular protrusion in the future. If you want to restore the protruding mandible to its normal position, I suggest you consult a plastic surgeon first.