Maxillofac Plast Reconstr Surg.  2016 Jan;38(1):4. 10.1186/s40902-016-0050-8.

CAD/CAM splint based on soft tissue 3D simulation for treatment of facial asymmetry

• Tominaga K
• Habu M
• Tsurushima H
• Takahashi
• Yoshioka I

• KMID: 2369479
• DOI: http://doi.org/10.1186/s40902-016-0050-8

Abstract

BACKGROUND
Most cases of facial asymmetry involve yaw deformity, and determination of the yaw correction level is very difficult.
METHODS
We use three-dimensional soft tissue simulation to determine the yaw correction level. This three-dimensional simulation is based on the addition of cephalometric prediction to gradual yaw correction. Optimal yaw correction is determined visually, and an intermediate splint is fabricated with computer-aided design and computer-aided manufacturing. Application of positioning devices and the performance of horseshoe osteotomy are advisable.
RESULTS
With this procedure, accurate repositioning of jaws was confirmed and patients obtained fairly good facial contour.
CONCLUSIONS
This procedure is a promising method for a widespread, predictable treatment of facial asymmetry.

Keyword

Facial asymmetry; 3D simulation; Soft tissue; CAD/CAM; Orthognathic surgery; Horseshoe osteotomy; Positioning device

MeSH Terms

Computer-Aided Design
Congenital Abnormalities
Facial Asymmetry*
Humans
Jaw
Methods
Orthognathic Surgery
Osteotomy
Splints*