Abstract
Bimaxillary protrusion is a dentofacial deformity common in the East Asian population.
It is often difficult to decide between orthodontic and surgical retraction to treat
patients with bimaxillary protrusion, especially if surgery to correct skeletal base
discrepancies is also required. The objective of this study was to investigate the
treatment outcomes of surgical versus orthodontic retraction in patients with bimaxillary
protrusion undergoing orthognathic surgery. A retrospective cohort study was conducted,
where the medical records and radiographs of 51 patients with bimaxillary protrusion
who had an anterior segmental osteotomy concomitant with orthognathic surgery were
examined. Patients who had bimaxillary anterior segmental osteotomies were more likely
to achieve an inter-incisal angle of 135 ± 5° at the end of treatment, when compared
to patients who had orthodontic retraction (P < 0.01). The total treatment duration of patients who had bimaxillary anterior segmental
osteotomies was significantly shorter as compared to that of the patients who only
had these osteotomies in the maxilla (P < 0.001) or mandible (P = 0.012). Complications and permanent long-term sequelae following anterior segmental
osteotomies were uncommon. It is concluded that bimaxillary anterior segmental osteotomies
are a viable alternative for patients with concomitant bimaxillary protrusion and
skeletal base discrepancies. This allows for a significantly shorter treatment time
and greater correction of inter-incisal angles, without a significant increase in
complications.
Keywords
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Article info
Publication history
Published online: August 22, 2022
Accepted:
August 15,
2022
Identification
Copyright
© 2022 International Association of Oral and Maxillofacial Surgeons. Published by Elsevier Inc. All rights reserved.
