1. Attending Physician, Aphrodite Clinic
2. Dean, Astrid Clinic
3. Attending Physician, Department of Plastic Surgery, Fu Jen Catholic University Hospital

Abstract:
The well-established facial skeleton contouring surgeries are routine procedures nowadays. However, how to achieve the symmetric contour and reducing operation time, especially in complicated cases may always be the problem.
To overcome this kind of problem, we provided methods by using three-dimensional (3D) printed molds, cutting guides, and simulated images to make the procedures of facial skeleton contouring surgeries more efficient and accurate. The operations were virtually planned by MIMICS software (V17, Materialize, Belgium), which optimized the stable structure and symmetric contour. We also printed 1:1 facial skeleton and shaped the implant preoperatively on them. We have performed miscellaneous facial skeleton contouring surgeries such as mandible reduction, chin augmentation, paranasal augmentation, infraorbital augmentation, forehead augmentation and occipital augmentation by the assistance of Computer-Aided Design (CAD) and 3D printing.
3D printing assistance for facial skeleton contouring provides significant improvement, regarding the aesthetic and functional outcome. Planned implantation and cutting guides achieve more symmetric contour, thus improving the appearance.

中文摘要：
　　時至今日，臉部骨骼輪廓手術已成為常規的美容手術。然而，如何實現對稱的輪廓並減少手術時間，尤其是在複雜的臉部輪廓下，始終是大家努力追求的目標。
　　為了達到這個目標，我們提供了使用3D列印模具、切割導板和模擬影像的方法，使臉部骨骼輪廓手術的過程更加高效且結果更加準確。術前我們用3D模擬軟體 MIMICS 做規劃，列印了患者 1:1 的臉部骨骼，並在術前經過與患者詳細溝通後列印了植入物的陰模，術中再壓製骨水泥完成植入物。我們在電腦輔助設計（CAD）和3D列印的幫助下進行了各種臉部骨骼輪廓手術，例如下顎削骨手術、下巴整形術、法令紋墊片手術、蘋果肌成形手術、前額整形手術和枕骨整形手術。
3D 列印輔助臉部骨骼輪廓手術在美學方面提供了更高效的過程和更準確的結果。術前利用電腦運算規劃植入物的形狀、大小和位置或者切割導版的角度和對稱性都可以實現更對稱的結果。