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Virtual plan · Facial Implants & Chin Surgery

Custom PEEK Jaw Angle Implants: Virtual Surgical Plan

The goal was added vertical length and definition at the jaw angles, for a short ramus and a steep mandibular plane angle. Two patient-specific PEEK implants, one for each side, were designed on a 3D model of the skull from the CT scan to lengthen and define the angles. In the plan, the width between the jaw angles goes from 88.3 to 93.4 mm.

GoalBefore & plannedImplant design

Type: Virtual surgical plan
Goal: Added vertical length and definition at the jaw angles
Implants: Custom PEEK mandibular angle implants, right and left
Angle width: 88.3 → 93.4 mm (planned)
Planning: 3D CT model, virtual design

Before

Planned

Right side · before → plannedVirtual surgical plan: added vertical length at the jaw angle

Before and planned

Each pair shows the 3D model before and with the planned implants, at the same angle and scale. The implants sit on the outer surface of each jaw angle and extend it downward and outward, adding vertical length and a more defined angle (planned).

Angle width

88.3 → 93.4mm

Between the jaw angles, before → planned

Thickness scale

0–10mm

Thickest over the angle

Implants

2PEEK

Right and left mandibular angle

Side view

Right and left sides, same angle and scale in each row. The dashed gold line marks the original jaw outline; the implant adds length below and behind it at the jaw angle.

Right side · before3D model from the CT scan

Right side · plannedImplant at the jaw angle

Right side · planned, with the original jaw outline dashed

Right side · planned + original outlineDashed gold line: original jaw outline

Left side · before3D model from the CT scan

Left side · plannedImplant at the jaw angle

Left side · planned, with the original jaw outline dashed

Left side · planned + original outlineDashed gold line: original jaw outline

Original jaw outline reconstructed from the virtual plan for illustration. Intergonial width 88.3 → 93.4 mm (planned).

Front, lower face and from below

Frontal · before3D model from the CT scan

Frontal · plannedImplants at both jaw angles

Jaw angles · beforeSame view, lower face

Jaw angles · plannedLonger, more defined angles

From below · beforeWidth between the angles 88.3 mm

From below · plannedWidth between the angles 93.4 mm

Diagnosis & concern

Concern

Short ramus height and a steep mandibular plane angle; goal: added vertical length and definition at the jaw angles.

Diagnosis

Short ramus and a high mandibular plane angle, with little definition at the jaw angles.

Implant design & fit

The implants are designed on the 3D model to fit the bone at each angle. The thickness map shows each implant thickest over the angle and thinning toward its edges, on a scale of 0 to 10 mm, so it blends into the jawline. Fixation is planned with 2.0/2.3 mm screws.

Supplementary · implant thickness mapRight and left implants; scale 0 to 10 mm

Segment	Planned movement	Amount (from plan)
Width between the angles	From below	88.3 → 93.4 mm
Implant 1	Right mandibular angle	PEEK, 2.0/2.3 mm screws
Implant 2	Left mandibular angle	PEEK, 2.0/2.3 mm screws
Thickness	Colour map scale	0 to 10 mm
Vertical length	Jaw angles	Added (planned)

Values as listed in the virtual surgical plan.

Planning steps

CT scan converted into a 3D model of the skull and mandible
Right and left implants designed to add length and definition at the jaw angles
Implant thickness mapped to set the planned contour
Screw positions and lengths planned on the model

Where

Planned at Maxillo-Facial Surgery Institute, Irvine. Our Surgeons

Plan images are cropped from the 3D surgical planning report; measurements are shown as planned. This page shows a virtual surgical plan; it is educational and not medical advice.