A simple method to treat asymmetric expansions in three-segment surgically assisted rapid maxillary expansion.

Surgically assisted rapid maxillary expansion (SARME) is a well-documented and established procedure indicated to treat maxillary transverse deficiencies in the adult patient. Currently, the most popular SARME technique consists of performing a Le Fort I osteotomy without downfracture and a midline osteotomy that splits the maxilla into 2 halves between the central incisors. It is supposed that the 2 halves expand equally during the activation phase.