骨科和口腔颌面外科3D打印模型的精度验证和可靠性分析

发布时间：2018-10-04 21:54

【摘要】：目的:探讨骨科和口腔颌面外科立体光固化(SLA)-3D打印模型的精确度,阐明该技术临床应用的可靠性。方法:随机纳入SLA-3D打印模型33例(长骨10例、不规则骨13例和假体10例),进行CT回扫并行三维重建;依据模型临床应用特点选取最大高径(MH)、最大长径(ML)、最大宽径(MW)、滑车宽径(WT)、滑车长径(LT)、关节盂长径(LGC)、关节盂宽径(WGC)、髂前上棘到耻骨结节距离(DPI)、髋臼直径(DA)、髓腔直径(DMC)、右下颌支前缘高度(AHRR)和右下颌支后缘高度(PHRR)等相关参数分别对原始数据及模型数据进行测量,计算各参数的绝对和相对误差,以组内相关系数(ICC)作为评价数据一致性指标,对假体模型进行空间误差分析。结果:33例SLA-3D打印模型中,除不规则骨组MW外,与原始数据比较,各组其他各项参数比较差异均无统计学意义(P0.05),模型数据与原始数据间各项参数ICC值均大于0.950,绝对和相对误差最大值分别为-0.58mm和-1.37%;假体模型空间误差最大值为0.237mm,总平均值为0.132mm。结论:SLA-3D打印模型CT的数据与原始数据高度一致,其在骨科及颌面外科疾病诊疗过程中的应用准确而可靠。
[Abstract]:Objective: to investigate the accuracy of stereoscopic photocurable (SLA)-3D printing model in orthopedics and oral and maxillofacial surgery and to elucidate the reliability of its clinical application. Methods: 33 cases of SLA-3D printing model (10 cases of long bone, 13 cases of irregular bone and 10 cases of prosthesis) were randomly selected for CT backscan and 3D reconstruction. According to the clinical characteristics of the model, select the maximum height, (MH), maximum length, (ML), maximum width, (MW), wide, (MW), wide, long, wide, (LT), long, wide, (LGC), (LGC), anterior superior iliac spine and pubic tubercle, (DPI), acetabular diameter, (DA), diameter, medullary cavity diameter. The original data and model data were measured by (DMC), including the anterior height of the right mandibular branch (AHRR) and the height of the posterior edge of the right mandibular branch (PHRR). The absolute and relative errors of each parameter were calculated and the spatial error of the prosthesis model was analyzed by using the intra-group correlation coefficient (ICC) as the evaluation data consistency index. Results in the SLA-3D print model of 33 cases, except for the irregular bone group MW, the results were compared with the original data. There was no significant difference in other parameters among each group (P0.05). The ICC value of each parameter between the model data and the original data was greater than 0.950, the maximum absolute and relative errors were -0.58mm and -1.37mm, respectively, and the maximum spatial error of the prosthesis model was 0.237mm, the total average was 0.132mm. Conclusion the CT data of the SLA-3D print model is highly consistent with the original data, and its application in the diagnosis and treatment of orthopedics and maxillofacial surgery is accurate and reliable.
【作者单位】：吉林大学第二医院骨科诊疗中心;吉林大学口腔医院口腔颌面外科;
【基金】：吉林省科技厅科研基金资助课题(2015Q109)
【分类号】：R68;R782

【相似文献】