中国组织工程研究2018，Vol.22Issue(10)：1529-1533,5.DOI:10.3969/j.issn.2095-4344.0711
高精度三维整合牙颌模型个体化微种植体手术导板的计算机辅助设计与制作
The computer-aided design and manufacturing of individualized miniscrew surgical guides based on a high-precision three-dimensional integrated digital maxillodental model
摘要
Abstract
BACKGROUND: Surgical guides designed based on a three-dimensional cone-beam CT (CBCT) model have been reported. However, CBCT cannot remodel fine soft tissue such as gums, and it can only be used to design a simple dental retainer with relatively poor stability. OBJECTIVE: To establish a high-precision three-dimensional (3D) integrated maxillodental model by matching CBCT model with 3D digital maxillodental model using 3D automatic registration method, based on which, we designed and manufactured individualized miniscrew surgical guides. METHODS: CBCT maxillodental models and laser-scanned dentition models obtained from six malocclusion cases were matched and overlapped using the 3D automatic registration method to fabricate the 3D integrated maxillodental model. Then, we accurately positioned and virtually implanted a micro-implant into the 3D integrated maxillodental model. Subsequently we prepared a high-precision individualized resin surgical guide by rapid prototyping technology. The inner diameter of the guide track was detected by a vernier caliper. Patients tried on the resin surgical guide, and then occlusion condition, guide seating and retention were detected. RESULTS AND CONCLUSION: Due to the high-precision registration of the model, all the resin surgical guide plates were suitable. The plate retention was enhanced after tooth clinching, and all the patients felt comfort when wearing the surgical guide plate, with no compression or other discomforts. The inner diameter of the guide track was (1.79±0.23) mm, and the measurement error was not statistically significant (P >0.05). These findings demonstrate that the high-precision surgical guide plate based on the high-precision 3D integrated model can provide the foundation for further investigations on the clinical application of surgical guides.关键词
三维整合牙颌模型/锥形束CT/生物材料/口腔材料/计算机辅助设计与制作(CAD/CAM)/微种植体手术导板/3D打印技术分类
医药卫生引用本文复制引用
陈妍曲,唐敏,黄旋平,周奉城,王家烯..高精度三维整合牙颌模型个体化微种植体手术导板的计算机辅助设计与制作[J].中国组织工程研究,2018,22(10):1529-1533,5.基金项目
广西自然科学基金项目(2015GXNSFBA139141) the Natural Science Foundation of Guangxi Zhuang Autonomous Region,No.2015GXNSFBA139141 （2015GXNSFBA139141）
