关于CT影像引导下跟踪打印牙模型优化研究
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摘要
对CT影像引导下跟踪打印牙模型进行优化,能够提高空腔牙模型的利用率,对打印牙模型进行优化,需要对通过熔融沉积制造技术得出跟踪打印牙模,建立影像间相似性的度量。传统方法在底座上设计柱形金属的预备体,对上颌尖牙与磨牙预备体进行模拟,但忽略了影像间相似性的度量,导致打印牙模型精度较低。提出一种CT影像引导下跟踪打印牙模型优化方法。获取患者临床锥束的CT影像数据,通过熔融沉积制造技术得出跟踪打印牙模,利用高斯拟合影像配准算法,获取图像的灰度信息,建立影像间相似性的度量。利用异性扩散平滑滤波提高仿真模型的质量,克服石膏牙模存在的弊端,完成CT影像引导下跟踪打印牙模的精度优化。仿真结果表明,所提的方法提取的CT影像引导下跟踪打印牙模型的精度比石膏牙模型的精度高,能满足临床需求,并且提高了口腔牙模制作的效率。
An optimization method for tracking and printing dental model based on CT image guidance was proposed. Firstly,the CT image data of clinical cone beam of patient were obtained. Through the fused deposition modeling technology,the teeth model was obtained. Then,the Gaussian fitting image registration algorithm was used to obtain the gray information of image and establish the similarity measurement between images. Moreover,the anisotropic diffusion smoothing filter was used to improve the quality of simulation model and overcome the disadvantage of gypsum teeth model. Thus,the accuracy of tracking and printing dental model guided by CT image could be optimized. Simulation results show that the precision of tracking and printing dental model based on CT image guidance extracted by proposed method model is higher than the precision of gypsous dental model,which can meet the clinical requirement and improve the production efficiency of dental model.
An optimization method for tracking and printing dental model based on CT image guidance was proposed. Firstly,the CT image data of clinical cone beam of patient were obtained. Through the fused deposition modeling technology,the teeth model was obtained. Then,the Gaussian fitting image registration algorithm was used to obtain the gray information of image and establish the similarity measurement between images. Moreover,the anisotropic diffusion smoothing filter was used to improve the quality of simulation model and overcome the disadvantage of gypsum teeth model. Thus,the accuracy of tracking and printing dental model guided by CT image could be optimized. Simulation results show that the precision of tracking and printing dental model based on CT image guidance extracted by proposed method model is higher than the precision of gypsous dental model,which can meet the clinical requirement and improve the production efficiency of dental model.
引文
[1] 李苏娜,等.锥形束CT和结构光扫描三维重建牙颌模型的准确性及可行性[J].解放军医学院学报,2016,37(7):788-791.
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[9] 周小义,等.3D打印导板辅助髁突骨软骨瘤及继发复杂牙颌面畸形的手术治疗[J].口腔医学研究,2017,33(2):166-169.
[10] 赵思蕊,等.基于3D骨架的交警指挥姿势动作识别仿真[J].计算机仿真,2016,33(9):412-417.
[2] 付丽,等.3D打印及CGF在双侧下牙槽神经移位同期牙种植术中的应用[J].口腔医学研究,2016,32(10):1003-1005.
[3] 鄢荣曾,等.3D打印制作个性化下颌骨三维网状修复体支架数字化建模方法的研究[J].中华口腔医学杂志,2016,51(5):280-285.
[4] 李大伟,等.密度感知的3D打印内部支撑结构轻量化建模[J].计算机辅助设计与图形学学报,2016,28(5):841-848.
[5] 凌均棨,LingJunqi.数字技术开辟牙体牙髓创新之路[J].中华口腔医学杂志,2016,51(4):210-214.
[6] 宋颖,等.构建3D打印牙齿模型及其形态仿真性研究[J].中国临床解剖学杂志,2016,34(3):298-302.
[7] 王亚妹,等.不同数字印模技术对3D打印模型精度的影响[J].实用口腔医学杂志,2016,32(3):313-316.
[8] 吴峥,赵新灿,王宗敏.基于3D基元的交互式单幅图像建模[J].计算机工程与设计,2016,37(2):470-474.
[9] 周小义,等.3D打印导板辅助髁突骨软骨瘤及继发复杂牙颌面畸形的手术治疗[J].口腔医学研究,2017,33(2):166-169.
[10] 赵思蕊,等.基于3D骨架的交警指挥姿势动作识别仿真[J].计算机仿真,2016,33(9):412-417.