A new design of CAD/CAM surgical template system for two-piece narrowing genioplasty.
A new design of CAD/CAM surgical template system for two-piece narrowing genioplasty.
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DOI：
10.1016/j.ijom.2015.10.013
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发表时间：
2016-05
影响因子：
2.4
通讯作者：
Wang X
中科院分区：
文献类型：
--
作者：
Li B;Shen SG;Yu H;Li J;Xia JJ;Wang X
这项研究的目的是开发和验证一种新的下巴模板系统，用于两件式狭窄颧骨成形术。研究对象为9例宽下巴畸形患者。手术计划采用计算机辅助手术模拟(CASS)计划方法。手术夹板和下巴模板是在计算机中设计的，并使用三维打印技术制造。下巴模板系统包括切割导向器和复位导向器，用于两件式狭窄颧骨成形术。在截骨术中，为了保护神经，这些导向器也被设计成避开颧孔区和下牙槽神经环。手术后，通过首先将术后计算机断层扫描模型叠加到计划模型上，然后测量计划结果与实际结果之间的差异来完成结果评估。所有手术均使用下巴模板系统顺利完成。本研究未见下牙槽神经损伤。使用下巴模板后，下颌节段的最大线性均方根偏差(RMSD)为0.7 mm，最大角度均方根偏差(RMSD)为4.5°。结果表明，下巴模板系统为二段式骨缩窄颧骨成形术提供了一种可靠的移植方法。
The purpose of this study was to develop and validate a new chin template system for a two-piece narrowing genioplasty. Nine patients with wide chin deformities were enrolled. Surgeries were planned with the computer-aided surgical simulation (CASS) planning method. Surgical splints and chin templates were designed in a computer and fabricated using a three-dimensional printing technique. The chin template system included a cutting guide and a repositioning guide for a two-piece narrowing genioplasty. These guides were also designed to avoid the mental foramen area and inferior alveolar nerve loops during the osteotomy, for nerve protection. After surgery, the outcome evaluation was completed by first superimposing the postoperative computed tomography model onto the planned model, and then measuring the differences between the planned and actual outcomes. All surgeries were completed successfully using the chin template system. No inferior alveolar nerve damage was seen in this study. With the use of the chin templates, the largest linear root mean square deviation (RMSD) between the planned and the postoperative chin segments was 0.7 mm and the largest angular RMSD was 4.5°. The results showed that the chin template system provides a reliable method of transfer for two-piece osseous narrowing genioplasty planning.