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MASTICATORY EVALUATING METHOD FOR COMPLETE DENTURE WEARERS

全口义齿佩戴者的咀嚼评估方法

基本信息

批准号：
08557110
负责人：
HIRAI Toshihiro
金额：
$ 3.26万
依托单位：
HEALTH SCIENCES UNIVERSITYB OF HOKKAIDO
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
1996
资助国家：
日本
起止时间：
1996 至 1998
项目状态：
已结题

项目摘要

To establish the objective evaluating method for masticatory performance, the skill of mandibular movement was investigated. The subjects were 8 healthy fully dentates and a simulated patient cemented the temporally metal crown with 50mu.m vertical occiusal interference. Tapping movements of mandible were performed along to the sound signal with 2Hz. Traces of mandibular movement using the SIROGNATHO ANALYZER III (Kanops, Co) and EMG of masticatory muscles were recorded simultaneously. The results showed that the deviations of cycle time of mandibular movement and EMG of temporal muscles were striking small in the 8 healthy fully dentates. On the other hand, the deviations of cycle time from the first stroke to the tenth stroke were extremely unstable comparing other ten strokes in the simulated patient. It was suggested that the deviation of the cycle time of mandibular movement would be an effective parameter of evaluation for the control ability of mandibular movement.The relationsh … More ip between tongue and mandibular movements were analyzed with and without an experimental lingual plate (ELP) while chewing 3 grams of peanuts. Moreover, masticatory efficiency was also evaluated by the sievingmethod. These movements were recorded simultaneously by use of ultrasound diagnostic equipment and the SIROGNATHO ANALYZER III immediately after, 1, 3, 6, 12, 24 and 48 hours after insertion of ELP.The cycle time of tongue and mandibular movement in all the chewing strokes were measured. The results were as follows. The masticatory efficiency immediately after ELP insertion decreased significantly compared to that of before the insertion of the ELP.The masticatory efficiency, cycle time of tongue movement and the mandibular movement with the insertion of the ELP gradually recovered to the levels prior to the insertion of the ELP.The vertical momentum of tongue indicated the same change as the mast icatory efficiency.It was suggested that the coordination of tongue and mandibular movement was very important for sufficient mastication. Theuseof theparameter indicating the change with mastication proceeding of vertical momentum of tongue would be effective to evaluate for masticalory performance. Less

为建立咀嚼效能的客观评价方法，对下颌运动技能进行了研究。受试者是8名健康的全牙列患者和一名模拟患者，使用50 μ m垂直枕干扰粘固颞金属冠。以2Hz的声信号进行下颌骨的沿着叩击运动。使用SIROGNATHO ANALYZER III（Kanops，Co）和咀嚼肌肌电图同时记录下颌运动轨迹。结果表明，8例健康全牙列患者下颌运动周期时间和颞肌肌电图的偏差均非常小。另一方面，从第一次中风到第十次中风的周期时间的偏差与模拟患者的其他十次中风相比非常不稳定。提示下颌运动周期时间的偏差可作为评价下颌运动控制能力的一个有效参数，并与运动周期时间的偏差相关。 ...更多信息在咀嚼3克花生的同时，分析了有和没有实验舌板（ELP）的情况下舌头和下颌运动之间的IP。此外，还用筛分法评价咀嚼效率。分别于ELP插入后即刻、1、3、6、12、24和48 h，用超声诊断仪和SIROGNATHO ANALYZER III同步记录舌运动和下颌运动，测量舌运动和下颌运动的周期时间。结果如下。ELP植入后即刻的咀嚼效率较ELP植入前显著降低，舌运动周期时间和下颌运动随ELP插入逐渐恢复到ELP插入前的水平，舌垂直动量与肥大效率变化一致，提示舌与下颌运动的协调性与ELP的插入有关下颌运动对充分咀嚼非常重要。利用舌垂直动量随咀嚼进程的变化来评价咀嚼效能是有效的。少