Analysis of the oral disfunction caused by jaw facial deformity and development of the inspection system for oral function

1.用FFT方法对手术III类患者和正常人的语音（/阿萨/）进行分析，计算两帧之间的相干性。结果表明：（1）辅音在高频范围内，元音在低频范围内都有高相干部分。B）正常人在辅音向元音滑动时，高连贯性部分由低频向高频平稳过渡。但手术III类患者转移不顺利.这次，进行了改进，以扩大测量范围和评估患者的纵向数据。结果表明，该系统的测量范围可扩展到前后、上下50 mm，横向12 mm。三维畸变校正后的测量误差为1.01mm（± SY）。[）0.89。实验结果表明，该测量系统能准确地观测舌运动，并能获得腭部舌运动的纵向数据.本研究选择3名正常人和3名外科III类错患者，对/s/（阿萨/，/usu/，/ese/，/oso/）摩擦音发音时舌运动进行了测量，结果表明：（1）滑音部分舌运动较快; B）患者舌位较低，声源持续时间较长。

1. The voice (/asa/) pronounced by the surgical class III patients and normal subjects were analyzed according to FFT method and the coherence between 2 frames were calculated. As a recult, a)the high coherency part was observed in high frequency range in case of the consonant and in low frequency range in case of the vowel. b)at the glide of consonant to vowel, the patr of high coherency was transferring smoothly from low frequency range to high frequency range in normal subjects. But it was not transferring smoothly in the surgical class III patients.2. This time, the improvements were undertaken to magnify the measuring range and to evaluate the patients' longitudinal data. The results have shown that the measuring range of the system expanded up to 50mm antero-posteriorly and superio-inferiorly and up to12mm transversely. The measurement error after correcting for three dimensional distortion was 1.01mm(]SY.+-。[)0.89. The results suggested that the measuring system could observe accurate tongue movement and superimpose the longitudinal data of tongue movement at palatal region.3. Therr normal subjects and three patients who are diagnosed as surgical class III malocclusion were selected to investigate tongue movements during articulation of the fricative /s/ (asa/, /usu/, /ese/, /oso/).From the results of the measuring data, a)faster tongus movements were observed in the parts of glide. b)the patients showed jower tongue position and longer duration to produce the sound source than normal subjects.