Maxillofacial Plastic and Reconstructive Surgery  2016;38(1):4-

doi:10.1186/s40902-016-0050-8

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

Kazuhiro TOMINAGA 1 ; Manabu HABU ; Hiroki TSURUSHIMA ; Osamu TAKAHASHI ; Izumi YOSHIOKA

Affiliations

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Keywords

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

Country

Republic of Korea

Language

English

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.