The midfacial is usually accompanied with congenital craniofacial synostosis, such as Crouzon, Apert, pfeiffer, Carpenter, Saethre-Chotzen syndrome, and so on. But sometimes isolated midfacial deficiency without cranial malformations may
appeared,
the
cause of which is congenital, hereditary, or secondary to developmental faciors, such as infection and trauma to middle face.
Since Sir harold Gillies reported the first high maxillary osteotomy that alleviated the problems of total midfacial deficiency, the various operative methods were developed by many clinicians, such as Longacre and Tessier.
These Procedures can enlarge the orbital volume and decreases exorbitism. As middle face was moved forward, these functional, esthetic, and psychologic advantages were resulted from this.
This is a case of midfacial deficiency corrected by the-subcranial Ie Fort III osteotomy through only coronal approach.
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