计算机辅助三维映射建模技术修复单侧颅骨缺损

Research and clinical application of computer-aided design of craniofacial prosthesis using mirror technique

目的探讨计算机辅助三维映射建模技术在单侧颅骨缺损对称性修复中的可行性。方法通过对单侧颅骨缺损患者行全头颅螺旋CT扫描、计算机辅助CT图像三维重建、计算机辅助三维映射建模、快速原型加工以及EH复合人工骨材料翻模制作单侧颅骨缺损的置入体，经手术置入，并观察临床效果。结果临床应用15例，术后所有病例均未出现感染、脑脊液漏、置入体排斥、异物感、置入物漂浮感等并发症。置入体和缺损部位高度吻合，颅骨的对称性恢复良好。结论计算机辅助三维映射建模直接设计制作置入体的三维模型为单侧颅骨缺损患者颅面对称性的修复提供了重要保证。

Objective To explore the feasibility of creating a 3D-CAD model of craniofacial prostheses through mirror technique to repair the unilateral craniofacial defects and restore craniofacial symmetry. Methods Patients with unilateral eraniofacial defects underwent spiral CT scanning. CAD3-D image was reconstructed ad 3-D CAD model of craniofacial prosthesis was created with mirror technique, Boolean operation and rapid prototyping technique. Then the prosthesis made of bioactive artificial bone was made through piaster cavity block. Results 15 cases were treated with no complications. Good symmetry was achieved after operation. Conclusions Designing the craniofacial prosthesis with mirror technique guarantees excellent functional and cosmetic results for repairing the unilateral craniofacial defects.