The cartilage in the middle of adult suture has been completely calcified and does not have the ability to expand. If it expands, only the alveolar bone is slightly widened and the teeth are compensatory eversion. It is effective to expand the arch after bilateral maxillary cortical incision. In addition, please choose a regular hospital for orthodontic treatment, because this is post-graduation education, not everyone can do it. Unless the specialist has advanced studies, or has read a graduate student majoring in orthodontics. It is best to choose a professional hospital with orthodontics. I wonder if it will help you.