General knowledge: Maxillary augmentation denotes the genre of reconstructive surgeries that aims the correction of maxillary hypoplasia. Maxillary hypoplasia results from the underdevelopment of the maxillary bones and produces midfacial retrusion, creating the illusion of protuberance of the lower jaw. As a result the profile appears prognathic.Maxillary hypoplasia can affect different subunits of the maxillary bone. If the entire maxilla is hypoplastic, it is termed maxillary micrognathia, while premaxillary hypoplasia refers to the part of the maxillary bone between the lateral maxillary incisor fissures.Craniofacial anomalies, Apert syndrome, and Crouzon syndrome include maxillary and cranial hypoplasia.Sent by maxillofacial surgeon @nima__sadeghi ,with permission of the patient.