正常人咀嚼习惯和咀嚼运动轨迹的观察研究

Observation of Masticatory Habit and Chewing Movements in the Normal Subjects

采用ＳＧＧ下颌运动轨迹描记仪，对３２例正常人的咀嚼习惯、咀嚼运动与■之间的关系进行了研究。结果表明：咀嚼习惯的确定不能采用问卷法，应采取实验观察的方法；咀嚼运动轨迹的分布受食物形态及后牙■的影响，后牙■是影响其分布的主要因素，咀嚼运动轨迹偏向牙尖斜度较小一侧分布。

In thisstudy, the masticatory habit and chewing movementswere evaluatedwith a sirognathograph instrument in 32 adult normal subjects. The results showed: the masticatory habitwasn’ tdetermined by questionnaire and was only determined bysirognathograph. The influenceof food and occlussionon masticatory movement was certified.Thedis-tribution of chewing cycles was inclined towards the sidethat had a moreexpanded toothslop.