Mandibular Angle Reduction
Mandibular contouring may be performed through an incision inside the mouth, along the lower gumline near the molars. The jaw angle is exposed by carefully dissecting the surrounding soft tissue. Based on your anatomy and goals, there are two primary approaches:
1) Mandibular angle ostectomy
A surgical saw is used to remove a wedge or block of bone at the gonial angle. This can be especially effective for patients with thicker or more prominent jawlines who want a more dramatic reduction.
Considerations: this approach can increase the risk of nerve injury and asymmetry if reductions are not perfectly matched—one reason planning and surgical precision are so important.
2) Mandibular angle burring
A rotary instrument (such as a surgical drill) is used to gently smooth and slim the gonial angle. No large bone segment is removed, and the change can be more subtle.
This approach can be a strong option when the goal is refinement rather than major reduction.
Mandibular V-Line Reduction
V-line reduction reshapes more than just the angles—it can contour the entire bottom edge of the mandible into a slimmer, more tapered silhouette.
A common approach uses an intraoral incision that begins near the back of the lower jaw and extends along the lower gumline toward the incisors. After the bone is exposed, the bottom portion of the mandible—often about 0.5 to 1 cm—may be resected to create a more slender V-shaped contour.
Often best suited for:
- Patients with a square jaw and low angle
- Patients with asymmetry on both sides
Important consideration: this technique can increase the risk of injury to the inferior alveolar and/or mental nerve, which is why surgeon experience and careful planning are essential.