When associated with cleft lip and palate, the abnormal development can be due to deficiency in the ability to grow because of the cleft lip or palate. The underdevelopment can also be caused by scarring from surgical repair of a cleft lip or palate. Diagnosis
Diagnosed mainly on visual inspection. The cheekbones and nose appear flat with thin lips and the lower jaw appears to be protruding even though it is normal in size. Computed tomography scan CT scan can be performed to compare the size of the Maxilla and Mandible. Computed tomography scan. Treatment
Corrective surgery is the most common treatment to correct this disorder. It involves the repositioning of the upper jaw to align with the lower jaw, to provide symmetry. It is best performed during childhood, if possible, to allow the jaw to recover and develop. The surgery may be performed in consultation with an Orthodontist who works on repositioning the teeth in the mouth.Severe cases require surgical correction after completing craniofacial growth around age 17-21.Milder forms without obstruction can be corrected for cosmetic reasons using veneers, snap in smiles, and overlay dentures

Prognosis
When associated with nasopharyngeal occlusion, the person is more likely to spend their days in forward head posture which may lead to back pain, neck pain and numbness in the arms and hands. It can also lead to sleep apnea and snoring.• People can generally live a relatively normal like with maxillary hypoplasia. Normal life expectancy. Recovery
The recovery time after the surgery depends on the extent of the surgery itself.
Patients are usually advised to eat soft foods for days, or sometimes weeks, to allow their jaw time to heal. They also require regular checkups with the doctor to monitor bone displacement, signs of infection, or other issues. Epidemiology
Maxillary hypoplasia is the most common secondary deformity that results from cleft lip and cleft palate. Because of the subjective nature of the diagnosis, the incidence of maxillary hypoplasia in people with cleft lip and palate varies between 15-50%. It is estimated that 25-50% of these patients require surgical intervention. Research directions
Research on the topic of maxillary hypoplasia is currently focused on the best way to treat and manage the disorder. A retrospective study was published in January of 2020 that evaluated the accuracy of virtual surgical planning-assisted management of maxillary hypoplasia. The study found that virtual surgical planning was an acceptable alternative to conventional planning and demonstrated to be very accurate. References


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