Dynamic Analysis of Oral Movement during eating and swallowing using Real-time Fringe Pattern Analysis

面部的唇颊运动对咀嚼功能和语音功能有很大的影响。然而，很少有方法来评估面部运动。在这方面，我们建立了一个真实的时间测量系统的形状和变形的脸。该系统由载波条纹投影仪、CCD摄像机和图像分析板组成。将载波条纹投影的人脸图像与计算机生成的三个具有相对相移的参考图像光栅相乘，经低通滤波得到三个相位分离的莫尔图像。该过程在硬件上以60Hz的频率执行。通过直接线性转换法将相位数据转换为实际数据。该系统的准确度通过在半球形试样上均匀放置14个参考点进行评价。分析了真实的坐标与系统数据的偏差。因此，该系统是准确和有用的， ...更多信息 本研究的目的是通过三维运动捕捉系统分析义齿佩戴者唇部运动的运动学差异，探讨唇部和义齿在一系列吞咽运动中的作用。受试者为5名全口义齿佩戴者（67 - 90岁，男：3名，女：2名）。指导受试者吞咽2ml水，并在佩戴和不佩戴假牙的情况下吞咽唾液。他们被要求在嘴里含2毫升水，一口吞下，然后被要求吞下他们的唾液。测量点为上下唇、嘴角、下巴和咽喉的中心点，分析每个点的运动持续时间和XYZ坐标的最大位移。戴义齿时唇尖移动的持续时间比不戴义齿时短，但无统计学意义。除吞咽唾液时下唇点外，无义齿组的最大Y值均大于戴义齿组。无义齿组的X线测量值大于戴义齿组，但差异无统计学意义。这些结果表明，无牙患者不能顺利吞咽没有义齿。结论：口腔疾病的治疗对吞咽障碍患者的康复非常重要。少

Facial movements, lips and cheeks, have great influences on the masticatory and phonetic functions. However, there was few method to evaluate the facial movements. In this respect, we established a real time measuring system for the shape and the deformation of the face. This system consists of the projector for carrier fringe pattern, one CCD camera and the unit of image analysis boards. The image of the face projected with carrier fringe pattern was multiplied by three computer generated reference images grating with relative phase-shift and three phase-sifted moire images was obtained by low-pass filtering. The process was executed on the hardware with the frequency of 60Hz. Phase data was translated to actual data, by the direct linear translation method. The accuracy of this system was evaluated with the 14 reference points placed equally on the semi-spherical test piece. Deviations of real coordinates and system data were analyzed. Therefore, this system was accurate and useful t … More o analyze dynamic deformation of the face, lips and cheeks during functions.The purpose of this study was to analyze the kinematic difference of lip movement in denture wearers by the 3-D motion capture system and to search the role of lips and dentures in a series of swallowing movements. The subjects were 5 complete denture wearers ( 67-90 years old, male: 3, female: 2 ). Subjects were instructed to swallow 2ml water and to do saliva swallowing with and without wearing dentures. They were instructed to hold in the mouth 2ml water and swallow at a gulp, then instructed to gulp down their saliva. The measuring points were center points of upper and lower lip, mouth corners, chin and throat.The duration of movement and maximum displacements of XYZ coordinates on each point were analyzed. On wearing dentures the duration of the movement of lip points were shorter than without dentures but were not statistically significant. The maximum Y without dentures were statistically larger compared to those of wearing dentures, except lower lip point on saliva swallowing. The X of mouth corners without dentures were larger compared to wearing dentures, but were not statisticaly significant. These results show that edentulous patient cannot swallow smoothly without dentures. It is concluded that treatment of oral conditions is very important for the rehabilitation of the patient with swallowing disorder. Less