The three-dimensional image expression of the developmental variation in the tongue function with occlusal and articulatory disorder

本研究旨在为咬合及构音障碍儿童提供三维舌位图像，并以动画形式展示其舌从静止位到吞咽位的运动过程，以增强其治疗动机，促进其行为矫正。在研究的第一<st>年，我们开发了软件，该软件可以分别从白光光栅投影型三维测量装置（GRASP-M，Technoarts Lab. Co.）与3个常用测量点相结合。我们还改进了同一设备（GRASP-F）中的面部测量部分的硬件和软件，以更快、更稳定地获取信息，即使是从幼儿。在第2<nd>年，我们开发了软件，通过将头影测量轮廓和牙齿图像置于两者之间，将遮挡模型和面部图像整合在一起。由于超声不能清晰观察舌前1/3的图像，我们从我们的一位研究同事那里获得了静息位和吞咽位的舌背印模，并制作了他们的模型。将GRASP-M舌背的三维图像与面牙图像进行拟合。另一方面，在以时间为t方向的序列中，将来自超声图像的舌背在额部（上第一磨牙近中点）和正中矢状部的运动绘制成序列，并将它们作为舌运动动画的基本信息。然而，即使在学年的最后一个月，我们仍然无法获得动画，并将任务推迟了一年。

This study intended to provide the three-dimensional tongue posture image to the children with occlusal and articulatory disorder in their own facial and dentitional image, furthermore, to show their tongue movement from the rest position to the swallowing position as an animation, in order to increase their motivation for the treatment and to prompt their behavior modification. At the 1^<st> year of the study, we developed the software that the images of upper and lower dental models which were projected separately from the white-lights-gratings project-type three-dimensional measurement device (GRASP-M, Technoarts Lab. Co.) were combined with the 3 common measurement points. We also refined both the hardware and the software of the face measurement section in the same device (GRASP-F) to get the information more quickly and steadily even from the small children.At the 2^<nd> year, we developed the software that integrated the images of both occluded models and face by lying the cephalometric profile and teeth images between them. Because the anterior one-third of the tongue image could not be observed clearly by the ultra-sonography, we got the impression of the tongue dorsum from one of our study colleagues both at the resting position and the swallowing position and made their models. The three-dimensional images of tongue dorsums by the GRASP-M were fitted into the integrated facial and dentitional image. On the other hand, the tongue dorsum movement both at the frontal section (upper first molar's mesial points) and mid-sagittal section from the sonography were drawn in the series using time as t direction and made them as the fundamental information for the tongue movement animation. However, we still could not get the animation even at the final month of the academic years, and remained the task for another year.