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

本研究旨在为有咬合和发音障碍的儿童在其自身的面部和牙齿图像中提供三维的舌头姿态图像，并以动画的形式展示其舌头从休息位置到吞咽位置的运动，以增加其治疗的动机，并提示其行为纠正。在研究的第1年，我们开发了从白光光栅项目式三维测量装置（GRASP-M, Technoarts Lab）上、下牙模型分别投影图像的软件。)与3个常用测点相结合。我们还在同一台设备（GRASP-F）中对面部测量部分的硬件和软件进行了改进，使得即使是小孩子也能更快、更稳定地获取信息。在2 ~ 30岁时，我们开发了一种软件，通过将头部轮廓和牙齿图像放在两者之间来整合闭塞模型和面部图像。由于舌前三分之一的图像在超声下观察不清楚，我们从一位研究同事处取舌背在休息位和吞咽位的图像并制作模型。利用grip - m将舌背三维图像拟合到面部和牙列综合图像中。另一方面，以时间为t方向，在超声图像上绘制舌背在前切面（上第一磨牙近中点）和中矢状切面的舌背运动序列，作为舌背运动动画的基础信息。然而，即使在学年的最后一个月，我们仍然没有得到动画，并且又保留了一年的任务。

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.