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Three Dimension Analysis of facial skin and Jaw Movements during Speech

言语时面部皮肤和下颌运动的三维分析

基本信息

批准号：
12671901
负责人：
KIM Sootaek
金额：
$ 2.18万
依托单位：
Showa University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2000
资助国家：
日本
起止时间：
2000 至 2003
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12671901/
关键词：
speech retro-reflective markers kinematic data accuracy test facial skin markers virtual point on the mandible orofacial movement Three Dimension Analysis 顎補綴装置調音運動顎口腔機能

项目摘要

The multiple regression analysis of the motion analysis of mandibular incisor-tooth point and facial skin markers were carried out, and that correlation was evaluated.Methods: Nine retro-reflective markers were placed on the skin over the mandible of 8 dentulous subjects. In addition, a marker frame, on which 3 markers were arranged spatially, was attached to the mandibular teeth of each subject. Markers on the facial skin and L1 were located and 3D constructed using 6 video cameras while the mandible was moved from centric occlusion to the maximal opening position, repeatedly.Multiple regression that predicts mandiblar movement was obtained. These were analyzed by the data of each range to the mouth openings 5 mm, 10 mm, and 15 mm. Nine formulas were obtained for every dependent variables.The actual values of facial skin markers were substituted for such multiple regressions. The absolute value of the difference between an actual value and a predicted value was calculated, and it was averaged (average deviation), compared to every sections.Result: When dependent variable was set to the mouth opening, the average deviation was 0.76 mm (3.7%). When dependent variable was set to the anterior-posterior direction and the vertical direction, the average deviations were 0.86 mm (16.9%) and 0.69mm (4.9%), respectively.Conclusion: It was suggested that movement of the mouth openings and the vertical direction to 15 mm of mandibular incisor-tooth point could be predicted from the facial skin markers.

对下颌切牙-牙尖运动分析与面部皮肤标记进行多元回归分析，并评价其相关性。方法：将9个反光标记放置在8例有牙颌患者的下颌骨上。此外，标记框架，其上的3个标记空间排列，连接到每个受试者的下颌牙。利用6台摄像机定位面部皮肤和L1上的标记，并在下颌骨从正中咬合移动到最大张开位置的过程中进行三维重建，得到预测下颌骨运动的多元回归模型。以张口度为5 mm、10 mm、15 mm的数据进行分析，得到9个因变量的回归方程，并以面部皮肤标志物的实际值代替。结果：以张口度为因变量时，平均偏差为0.76mm（3.7%），平均偏差为0.76mm（3.7%）。将因变量设为前后方向和垂直方向时，平均偏差分别为0.86mm（16.9%）和0.69mm（4.9%）。结论：根据面部皮肤标志可以预测下颌切牙点开口度和垂直方向移动15 mm。