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首页> 外文期刊>The Journal of craniofacial surgery >Three-Dimensional Planning in Maxillofacial Fracture Surgery: Computer-Aided Design/Computer-Aided Manufacture Surgical Splints by Integrating Cone Beam Computerized Tomography Images Into Multislice Computerized Tomography Images
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Three-Dimensional Planning in Maxillofacial Fracture Surgery: Computer-Aided Design/Computer-Aided Manufacture Surgical Splints by Integrating Cone Beam Computerized Tomography Images Into Multislice Computerized Tomography Images

机译：颌面骨折手术中的三维计划：通过将锥形束计算机断层扫描图像整合到多层计算机断层扫描图像中的计算机辅助设计/计算机辅助制造手术夹板

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This study aimed to evaluate an innovative workflow for maxillofacial fracture surgery planning and surgical splint designing. The maxillofacial multislice computerized tomography (MSCT) data and dental cone beam computerized tomography (CBCT) data both were obtained from 40 normal adults and 58 adults who suffered fractures. The each part of the CBCT dentition image was registered into MSCT image by the use of the iterative closest point algorithm. Volume evaluation of the virtual splints that were designed by the registered MSCT images and MSCT images of the same object was performed. Eighteen patients (group 1) were operated without any splint. Twenty-one (group 2) and 19 patients (group 3) used the splints designed according to the MSCT images and registered MSCT images, respectively. The authors' results showed that the mean errors between the 2 models ranged from 0.53 to 0.92mm and the RMS errors ranged from 0.38 to 0.69mm in fracture patients. The mean errors between the 2 models ranged from 0.47 to 0.85mm and the RMS errors ranged from 0.33 to 0.71mm in normal adults. 72.22% patients in group 1 recovered occlusion. 85.71% patients in group 2, and 94.73% patients in group 3 reconstructed occlusion. There was a statistically significant difference between the MSCT images based splints' volume and the registered MSCT splints' volume in patients (P<0.05). The MSCT images based splints' volume was statistically significantly distinct from the registered MSCT splints' volume in normal adults (P<0.05). There was a statistically significant difference between the MSCT images based splints' volume and the registered MSCT splints' volume in patients and normal adults (P<0.05). The occlusion recovery rate of group 3 was better than that of group 1 and group 2. The way of integrating CBCT images into MSCT images for splints designing was feasible. The volume of the splints designed by MSCT images tended to be smaller than the splints designed by the integrated MSCT images. The patients operated with splints tended to regain occlusion. The patients who were operated with the splints which were designed according to registered MSCT images tended to get occlusal recovered.
机译：这项研究旨在评估颌面部骨折手术计划和手术夹板设计的创新工作流程。颌面多层计算机断层扫描（MSCT）数据和牙锥束计算机断层扫描（CBCT）数据均来自40名正常成年人和58名遭受骨折的成年人。通过使用迭代最近点算法，将CBCT牙列图像的每个部分注册到MSCT图像中。对由相同对象的注册MSCT图像和MSCT图像设计的虚拟夹板进行体积评估。 18名患者（第1组）手术时没有夹板。 21名（第2组）和19名患者（第3组）分别使用了根据MSCT图像和注册的MSCT图像设计的夹板。作者的结果表明，在骨折患者中，两个模型之间的平均误差范围为0.53至0.92mm，RMS误差范围为0.38至0.69mm。正常成年人中，两个模型之间的平均误差范围为0.47至0.85mm，RMS误差范围为0.33至0.71mm。第1组中有72.22％的患者恢复了闭塞。第2组的患者为85.71％，第3组的患者为94.73％。患者的基于MSCT图像的夹板体积与已注册的MSCT夹板体积之间存在统计学上的显着差异（P <0.05）。在正常成年人中，基于MSCT图像的夹板体积与注册的MSCT夹板体积在统计学上有显着差异（P <0.05）。在患者和正常成年人中，基于MSCT图像的夹板体积与注册的MSCT夹板体积之间存在统计学上的显着差异（P <0.05）。第3组的遮挡恢复率优于第1组和第2组。将CBCT图像整合到MSCT图像中进行夹板设计的方法是可行的。由MSCT图像设计的夹板的体积倾向于小于由集成MSCT图像设计的夹板的体积。夹板手术的患者倾向于恢复闭塞。根据注册的MSCT图像设计的夹板进行手术的患者往往会恢复咬合。

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