结论通过不同方法可以改善口腔曲面断层摄影的质量。
Conclusion The quality of pantomography can be improved by different method.
目的：探讨颌骨不同种植部位在曲面断层片上的失真率。
Objective:To evaluate the distortion rate of dental implant bed in the jaw by the orthopantomography.
目的：在牙种植过程中，比较螺旋CT和曲面断层的应用价值。
Objective:To compare the clinical application of Spiral Computed Tomogarphy(SCT)and orthopantomogarphy(OP) in implant procedure.
在曲面断层片上分别测量上颌第一和第二磨牙与腭平面所成的角度。
The sagittal inclinations to the palatal plane of the first and second maxillary molars were measured on panoramic tomography.
方法：10例接受ITI种植的患者，在术前均接受螺旋CT和曲面断层的影像学检查。
Methods:10 patients received ITI implant treatment had image analysis by SCT and OP.
结果通过曲面断层片中观察发现囊肿腔内骨密度增高，有不同程度的新骨形成，囊肿体积变小。
Results Observed from orthpanotomography the density of bone in cysts increased significantly, with new bone formation and decreasing of the vulcanicity of cysts.
分析两者之间位置关系与阻生类型、性别、曲面断层片上下颌神经管骨白线是否可见的相关性。
Correlations of their relationship and type of tooth impaction, gender, visibility of the white line of bone of the MC by panoramic radiography were analyzed.
方法通过对全颌曲面断层X线片上牙根尖孔宽度的测量。比较不同根尖孔宽度的电活力试验结果。
Methods The results of pulp electrovitality were compared with that of the width of the tip of a root obtained by X ray photograph.
不能依靠曲面断层片上阻生牙牙冠与邻牙牙根的重叠范围来判断是否存在切牙的牙根吸收及吸收程度。
The overlap range of impacted canine and the root of incisors can't be used as an indicator of the extent of the incisor root resorption.
结论曲面断层摄影各部位变形失真率不同，这为指导临床工作，如颌骨畸形矫正术中截骨线位置的确定。
Conclusion Distortion at the different parts of the orthopantomograph is different, therefore, the result should be beneficial for the clinicians in determination of bone cut of orthognathic surgery.
地质界面模型是由煤层的顶底板插值曲面经煤层边界和断层曲面裁剪而成的，地表面模型是对原始地表数据和矿坑数据进行三角剖分得到的三角形网格。
The interpolation face of coal seams is trimmed by boundary and the closed polygons of up and down faulted blocks to form the deposit interface model. The earths surface model is founded.
对于断层数据的三维曲面重建方法通常是先进行重建，然后对结果进行平滑和简化操作。
The normal method of reconstruction from segment datasets is extract the isosurface first and then optimize the result.
本文主要关注基于轮廓数据的三维物体对象曲面重构问题，轮廓表示着一系列通过物体对象的断层截面形状。
This dissertation is concerned with the problem of reconstructing the surfaces of 3-d objects from a collection of planar contours representing cross sections through the objects.
并用数值的方法计算了在二维情况下地震断层沿曲面(线)扩展的途径。
The path of curved surface (line) along which an earthquake fault spreads was computed numerically for the two dimensional case.
并用数值的方法计算了在二维情况下地震断层沿曲面(线)扩展的途径。
The path of curved surface (line) along which an earthquake fault spreads was computed numerically for the two dimensional case.
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