Evaluation of the quantitative accuracy of 3D reconstruction of edentulous jaw models with jaw relation based on reference point system alignment.
Evaluation of the quantitative accuracy of 3D reconstruction of edentulous jaw models with jaw relation based on reference point system alignment.
复制标题
基于参考点系统对准的具有颌关系的无牙颌模型 3D 重建的定量精度评估
DOI：
10.1371/journal.pone.0117320
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发表时间：
2015
期刊：
影响因子：
3.7
通讯作者：
Sun Y
中科院分区：
文献类型：
--
作者：
Li W;Yuan F;Lv P;Wang Y;Sun Y
目的应用接触测量和参考点系统（referencepoint system，RPS）技术建立无牙颌正中关系模型的三维重建方法，并定量评价其准确性。方法临床制备上、下无牙颌模型，将10对相同尺寸的树脂圆柱体分别粘贴于上、下模型的轴面。将基托和上下颌模型置于正中关系位。使用Faro Edge 1.8m直接获得圆柱体基面的中心点（接触法）。使用Activity 880牙科扫描仪获得圆柱体的3D数据，并对中心点进行拟合（拟合法）。使用3对中心点将虚拟模型对准到中心关系。交互建立观测坐标系。分别测量由接触法和拟合法得到的其余7对中心点之间的X（水平左/右）、Y（水平前/后）和Z（垂直）直线距离，并使用配对t检验进行分析。结果其余7对中心点的直线距离在两种方法间的差值分别为X：0.074 ± 0.107 mm，Y：0.168 ± 0.176 mm，Z：−0.003± 0.155 mm，配对t检验结果为X和Z：p >0.05，Y：p <0.05。结论采用接触测量和参考点系统对线技术，可以高精度地重建无牙颌数字模型的垂直距离和中心关系，满足全口义齿设计和制作的要求。水平前后颌关系误差较大。
Objectives To apply contact measurement and reference point system (RPS) alignment techniques to establish a method for 3D reconstruction of the edentulous jaw models with centric relation and to quantitatively evaluate its accuracy. Methods Upper and lower edentulous jaw models were clinically prepared, 10 pairs of resin cylinders with same size were adhered to axial surfaces of upper and lower models. The occlusal bases and the upper and lower jaw models were installed in the centric relation position. Faro Edge 1.8m was used to directly obtain center points of the base surface of the cylinders (contact method). Activity 880 dental scanner was used to obtain 3D data of the cylinders and the center points were fitted (fitting method). 3 pairs of center points were used to align the virtual model to centric relation. An observation coordinate system was interactively established. The straight-line distances in the X (horizontal left/right), Y (horizontal anterior/posterior), and Z (vertical) between the remaining 7 pairs of center points derived from contact method and fitting method were measured respectively and analyzed using a paired t-test. Results The differences of the straight-line distances of the remaining 7 pairs of center points between the two methods were X: 0.074 ± 0.107 mm, Y: 0.168 ± 0.176 mm, and Z: −0.003± 0.155 mm. The results of paired t-test were X and Z: p >0.05, Y: p <0.05. Conclusion By using contact measurement and the reference point system alignment technique, highly accurate reconstruction of the vertical distance and centric relation of a digital edentulous jaw model can be achieved, which meets the design and manufacturing requirements of the complete dentures. The error of horizontal anterior/posterior jaw relation was relatively large.
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DOI：
10.1109/34.121791
发表时间：
1992-02-01
影响因子：
23.6
作者：
BESL, PJ;MCKAY, ND
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发表时间：
2011-10-01
影响因子：
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影响因子：
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