**2. Correction of transverse discrepancy via orthodontics**

This is successful until the age of approximately 14–15 years depending on the gender of the patient. After this age, orthodontic widening becomes virtually impossible and very painful. In general, it is assumed that closure of the midpalatal suture prevents this type of expansion [25-27].

On the other hand, Mommerts outlined a basic treatment strategy for patients with maxillary constriction, based on age that rapid maxillary expansion should be completed to treat maxillary constriction in patients under the age of 12. From age 14 on, surgically assisted palatal expansion is indicated to release areas of bony resistance in the midface [28].
