AToAAdditive Tech on Anatomy

Jaw surgery · Live at Kenyatta National Hospital

Every cut decided before the first incision.

Tumour resection and reconstruction, orthognathic correction and facial trauma. One planning service, carried into theatre by guides made for one patient.

Mandible reconstructed with three fibula segments

Tumour · A real case, step by step

Ameloblastoma: from a plated jaw to a three-segment fibula reconstruction.

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Ameloblastoma, Kenyatta National Hospital, 2026. Shown with identifying details removed.

The whole plan at a glance

Resection, harvest and reconstruction, agreed before theatre.

Mandible with existing reconstruction plate
1. AssessThe defect and what holds it today.
Resection guides seated on the mandible
2. Guide the resectionEvery cut on the jaw fixed by a printed guide.
Fibula with cutting guide
3. Guide the harvestSegment lengths and angles cut on the leg.
Reconstructed mandible, front view
4. ReconstructThree segments, one new jaw line.

Plan for the teeth now

A fibula seated at the lower border restores the contour but can leave the bone far below the bite. We set its height with you and the prosthodontist in the same session, so an implant-retained prosthesis stays possible. Implants and guides

Part of our oncology work

Jaw tumours are one of several tumour sites we plan: the same approach to margins and reconstruction applies to cardiac and bone tumours. Oncology

Orthognathic surgery

Move the jaws on screen first.

The maxilla and mandible are repositioned in 3D, checked against the bite, the midline and the face, and the plan reaches theatre as printed splints and guides.

Six-step virtual plan of bimaxillary orthognathic surgery
A bimaxillary plan, step by step: maxilla (blue) and mandible (orange) moved into the planned occlusion. Lee YC, Kim SG. Maxillofac Plast Reconstr Surg 2023;45:42, CC BY 4.0.
Colour-printed skull models before and after the planned movement
Pre-operative and planned models, printed in colour. Lee YC, Kim SG, 2023, CC BY 4.0.

What you receive

PlanLe Fort I, sagittal split and genioplasty movements, set with the surgeon and orthodontist
SplintsIntermediate and final occlusal splints in biocompatible resin
GuidesOsteotomy and positioning guides where you want them
ModelsColour models before and after, for consent and the team
CheckPost-operative scan overlaid on the plan, so you see your own accuracy
Mandible model with plate

Facial trauma

Bend the plate before the patient is on the table.

Comminuted mandibular, midface and orbital fractures at true scale. For orbital floor and wall repair, the uninjured side is mirrored so the implant is shaped to the anatomy the patient had. Reduction is rehearsed on the model, and the plate is contoured before the list.

Evidence

Shorter operations. More accurate jaws.

45 min

shorter fibula free flap mandible reconstruction with virtual planning, with no increase in complications.

Barr 2020, Ann Plast Surg, meta-analysis
3.6° vs 7.7°

gonial angle error, planned against free-hand reconstruction.

Pucci 2020, Int J Oral Maxillofac Surg, meta-analysis
5 RCTs

Orthognathic surgery planned virtually gave more symmetrical results and a more accurate anterior maxilla.

Chen 2021, J Oral Maxillofac Surg; 199 patients

Measured in centres that already plan in 3D routinely. Where the plan and the guide are the only 3D information in theatre, the gap they close is wider.

Dental and jaw references

Have a jaw to plan?

Send the clinical question. We reply with what the plan can answer, the timeline and the cost.