Presenting
27-year-old female, lifelong underbite with chewing difficulty and self-consciousness in social settings. 8mm reverse overjet on cephalometric analysis.
Workup
- Cephalometric and panoramic radiographs
- Cone-beam CT (4-slice symmetry analysis)
- Digital impressions + 3D facial scan
- Joint MRI to rule out TMJ pathology
- Sleep questionnaire (negative for OSA)
Plan
Surgery-first protocol: Le Fort I maxillary advancement 5mm + BSSO mandibular setback 4mm + 3mm sliding genioplasty. Pre-surgical orthodontic phase shortened to 4 weeks for archwire insertion only.
Surgery
Bimaxillary osteotomies with patient-specific titanium plates designed from a virtual surgical plan. Theatre time 4h 20m. One-night admission. Inter-maxillary fixation avoided thanks to rigid custom plating.
Outcome
Class I occlusion at 6 weeks. Profile change visible from week 4. Post-op orthodontic detailing completed at month 9. 18-month follow-up: stable occlusion, full sensory recovery, patient satisfaction 10/10.