Safe modification of anterior segmental maxillary osteotomy

Anterior segmental osteotomy is usually performed through vestibular horizontal mucosal incision or palatal horizontal mucosal incision. These mucosal incisions have a possibility of the blood supply disturbance resulting into segmental bone necrosis. Through a pair of small perpendicular mucosal incisions at premolar buccal alveolar area, anterior segmental osteotomies are able to accomplish safely without a fear of segmental bone necrosis co-use of piezoelectric bone cutting device. This paper describes the technique and case results.