Karlsson S, Carlsson G E
Int J Prosthodont. 1989 Sep-Oct;2(5):490-6.
In an assessment of the reproducibility of three-dimensional masticatory movements by an optoelectronic method, the tests conducted on the same individuals at different times produced results that were almost identical. However, some significant differences were found in the mandibular movement parameters when the subjects chewed different foods. This was mainly reflected in a longer opening time and higher values for the traversed 3D distance during mastication of chewing gum compared to peanuts. A movement analysis system was linked with a computer, and a program was developed for analysis of chewing parameters including mandibular velocity and dimensions. A reference system compensated for head movements. Every step in the recording procedure--calibration, collection, processing and presentation of the data--can be automatically controlled by the computer. The method proved to be precise and accurate in repeated recordings and apparently suitable for objective posttreatment and long-term evaluation of chewing performance.
在一项通过光电方法评估三维咀嚼运动可重复性的研究中，在不同时间对同一受试者进行的测试产生了几乎相同的结果。然而，当受试者咀嚼不同食物时，在下颌运动参数方面发现了一些显著差异。这主要体现在与咀嚼花生相比，咀嚼口香糖时开口时间更长，咀嚼过程中三维移动距离的值更高。一个运动分析系统与计算机相连，并开发了一个程序用于分析包括下颌速度和尺寸在内的咀嚼参数。一个参考系统可补偿头部运动。记录过程中的每一步——数据的校准、收集、处理和呈现——都可以由计算机自动控制。该方法在重复记录中被证明是精确和准确的，显然适用于咀嚼性能的客观治疗后和长期评估。
