Overjet
Overbite
Mandibular plane angle
Lip competence
Class III Underbite Correction
Bimaxillary surgery with genioplasty
Presentation
Lifelong skeletal class III with a pronounced lower jaw, anterior crossbite affecting incision, and self-consciousness about facial profile. Two prior consultations had recommended only orthodontic camouflage.
Surgical approach
Combined Le Fort I maxillary advancement of 5 mm, bilateral sagittal split osteotomy with mandibular set-back of 4 mm, and a 3 mm advancement genioplasty. Virtual surgical planning generated 3D-printed splints with sub-millimetre accuracy.
Outcome at follow-up
Class I occlusion achieved in theatre. Patient reported immediate improvement in incising and chewing. Twelve-month follow-up shows stable bite, balanced profile and resolved TMJ symptoms.
Treatment timeline
- 01Week 0Records & 3D planningCBCT, intra-oral scan and photographic series. Virtual surgical plan delivered with patient input.
- 02Months 1–11Pre-surgical orthodonticsBite decompensation by referring orthodontist in Riyadh, monitored remotely.
- 03Month 12SurgeryBimaxillary procedure with genioplasty, 4 hr 20 min theatre time, 2 nights inpatient.
- 04Months 12–13RecoveryTwo-week soft diet, lymphatic drainage protocol. Patient flew home day 11.
- 05Months 13–16Finishing & retentionThree months of orthodontic finishing, retainers issued at debond.