The dental arch will not deform your face. Don't worry, you must adjust your lower teeth when you adjust your upper teeth. Otherwise, how can the upper and lower teeth align? The dentist's duty is not just to repair teeth. All dentists, especially prosthodontists and orthodontists, will consider the relationship between the patient's teeth and face. Dental arch expansion is a new orthodontic technique, which is more difficult than extraction orthodontics. You should believe that the new technology developed by medical research will not be worse than the old technology. Extraction orthodontics is a traditional orthodontic method.