Studies on the concept of denture planning based on presso-receptive information of occlusal force and mandibular position

虽然粉碎食物所需的力随食物种类的不同而不同，但辨别食物的力学性质和适当地展示肌肉力量对于顺利咀嚼运动是很重要的。尤其是当硬质食物被碾碎时，会出现咬合力的突变和下颌位置的突变。有必要弄清食品粉碎过程中肌肉活动的变化与这些突然变化相对应。为了弄清咀嚼系统，建立可摘局部义齿的规划规则，有必要掌握牙周组织的预感受信息对咬合力突变的影响。虽然咀嚼肌的活动随着咬合力的变化和下颌位置的变化而变化，但关于食物粉碎过程中咀嚼肌肌电活动的静止期的研究很少。另一方面，在im…的情况下。更多的植物没有牙周组织的功能，那么为了阐明牙周组织前感受信息的影响，研究种植体在食物粉碎过程中咬合力和下颌位置相应变化的情况下咀嚼肌活动的变化是非常有意义的。当下颌运动控制系统重复平滑咀嚼运动时，当给出不正确的下颌位置时，下颌位置可以适应给定的情况。因此，研究义齿佩戴者下颌咀嚼运动对牙尖间位置侧移的适应性，将成为诊断错误下颌位置的依据。本研究对食物的硬度辨别能力、种植义齿时食物的前感觉和硬度辨别能力、食物粉碎时出现的静止期以及下颌咀嚼运动对给定的侧移牙尖间位置的适应性进行了研究。较少

Though the force required to crush food is varied with kind of foods, the discrimination of the mechanical property of food and a suitable exhibition of muscle force are important to smooth masticatory movement. Especially when the hard food is crushed, the sudden change of occlusal force and the sudden change of mandibular position occur. It is necessary to clarify the change of muscle activity during food crushing corresponding these sudden changes. For clarifying the masticatory system and establishing the rule of planning on the removable partial denture, it is necessary to grasp the influence of presso-receptive information of the periodontal tissues on the sudden change of interocclusal force. There are a few investigation on the silent period of myoelectric discharge of masticatory muscles during food crushing, though the activity of masticatory muscles changes corresponding the change of occlusal force and the change of mandibular position. On the other hand, in the cases of im … More plant they have not function of periodontal tissues, then for clarifying the influence of presso-receptive information of the periodontal tissues, it is very interest to investigate the change of activity in the masticatory muscles in the cases of implant corresponding change of occlusal force and mandibular position during food crushing. While the mastication is repeated smooth movement by the control system of mandibular movement, the mandibular position may adapt to given situation, when the incorrect mandibular position is given. Therefore the investigation of adaptation of mandibular masticatory movement to given laterally shifted intercuspal position in the denture wearer will be taking a rule of diagnosis on the incorrect mandibular position. In this study, four items of the investigation; hardness discrimination ability of food, presso-receptive sensation and hardness discrimination ability of food in the cases of implant denture, appearance of silent period during food crushing, and adaptation of mandibular masticatory movement to given laterally shifted intercuspal position were studied . Less