Three-dimensional unilateral method for the bilateral measurement of condylar movements.

Three-dimensional unilateral method for the bilateral measurement of condylar movements.
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用于髁突运动双边测量的三维单边方法。

DOI:
10.1016/0021-9290(94)00117-m
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发表时间:
1995
影响因子:
2.4
通讯作者:
Stohler,CS
Stohler,CS
中科院分区:
工程技术3区
文献类型:
--
作者:
Zhang,X;Ashton-Miller,JA;Stohler,CS

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利用单侧光电跟踪系统(JAWS-3D),开发了一种同时测量同侧和对侧人体髁突三维运动学的方法,后者在实际记录过程中由摄像系统视野下的虚拟点表示。该方法让受试者的头部不受限制,同时测量两组三个发光二极管的运动,这些发光二极管刚性连接到上部和下部技术。采用Tait-Bryan角法计算三维颌骨旋转。运动参考骨骼和牙齿坐标系。最差情况静态测量误差为0.24 mm(平移20 mm)和0.71°(旋转35°)。平均动态测量误差为9.73 μm s− 1(恒定线速度为200 μm s− 1)和0.73° s− 1(恒定角速度为149° s−1)。该方法的实用性在一个被要求以循环方式打开和关闭嘴巴的受试者中得到了证明。
Using a unilateral optoelectronic tracking system (JAWS-3D), a method was developed for the simultaneous measurement of the three-dimensional kinematics of both ipsilateral and contralateral human condyles, the latter being represented by virtual points bcyond the field of vision of the camera system during the actual recording. The method leaves the subject's head unrestrained while measuring the movements of two sets of three light-emitting diodes rigidly attached to the upper and lower tech. The Tait-Bryan angles method was employed for calculating the jaw rotations in three dimensions. Movements were referenced to both a skeletal and a dental coordinate system. The worst-case static measurement errors were 0.24 mm for a 20 mm translation and 0.71° for a 35° rotation. The mean dynamic measurement errors were 9.73 μm s−1at a constant linear velocity of 200 μm s−1and 0.73° s−1at a constant angular velocity of 149° s−1. The utility of the method was demonstrated in a subject who was asked to open and close the mouth in a cyclic fashion.
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