Mårtensson B, Rydén H
Department of Orthodontics, School of Dentistry, Karolinska Institutet, Huddinge, Sweden.
Am J Orthod Dentofacial Orthop. 1992 Aug;102(2):113-9. doi: 10.1016/0889-5406(92)70022-3.
A system for producing holograms and for three-dimensional measuring on holograms is described. The precision of the system was evaluated when three-dimensional measurements were made on (1) a holographic image superimposed on the corresponding object and (2) two superimposed holographic images of the same object. When a metal test object with sharp well-defined contours, easy to reorientate was used, the precision was 0.02 to 0.11 mm for x, y, and z coordinates (transverse, longitudinal, and vertical planes). When dental casts that have less distinct contours were used, precision was reduced to 0.03 to 0.43 mm. Precision was high for the x and y coordinates and satisfactory for the z coordinate. The system has a precision that is equal to that of previously reported methods and may be well-suited for studies of dental positional changes in longitudinal materials of study models. Holograms of dental casts may solve storage problems by replacing space consuming plaster models.
描述了一种用于制作全息图以及对全息图进行三维测量的系统。当对（1）叠加在相应物体上的全息图像和（2）同一物体的两个叠加全息图像进行三维测量时，评估了该系统的精度。当使用具有清晰明确轮廓、易于重新定向的金属测试物体时，x、y和z坐标（横向、纵向和垂直平面）的精度为0.02至0.11毫米。当使用轮廓不太清晰的牙模时，精度降低到0.03至0.43毫米。x和y坐标的精度较高，z坐标的精度令人满意。该系统的精度与先前报道的方法相当，可能非常适合研究研究模型纵向材料中的牙齿位置变化。牙模的全息图可以通过取代占用空间的石膏模型来解决存储问题。
