The Investigation of Upper and Lower Posterior Teeth in Function. The Three Dimensional Tooth Displacement.
The Investigation of Upper and Lower Posterior Teeth in Function. The Three Dimensional Tooth Displacement.
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上、下后牙功能的调查。
DOI：
10.2186/jjps.42.279
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发表时间：
1998
期刊：
影响因子：
--
通讯作者：
S. Hasegawa
中科院分区：
文献类型：
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作者：
D. Okada;H. Miura;S. Hasegawa
本研究使用M-3型位移传感器显示上、下磨牙的功能位移。这个传感器是由三浦发明的，目的是为了显示三维的牙齿位移。实验结果如下：1.实验结果表明：一般情况下，每个上磨牙向腭尖方向移动，每个下磨牙向舌方向移动。对于每个上磨牙，位移量根据咬合力成比例地变化。移位方向向腭侧。对于每一个较低的磨牙，位移量根据咬合力成比例地变化。移位方向向舌侧。上磨牙的位移量随紧咬力的变化比下磨牙大。结果表明，上颌磨牙和下颌磨牙的相对位置和牙尖间位置的咬合接触关系随咬合力的变化而变化。
In this investigation, functional displacement of upper and lower molars were revealed using the displacement transducer type M-3. This transducer was invented by Miura in order to reveal three dimensional tooth displacement.The results were as follows:1. In general, each upper molar moved in the apical palatal direction while each lower molar moved in the lingual direction.2. For each upper molar, the amount of displacement varied proportionally depending on the clenching force. The direction of displacement was towards the palatal side.3. For each lower molar, the amount of displacement varied proportionally depending on the clenching force. The direction of displacement was to the lingual side.4. The amount of displacement depending on the clenching force was larger in each upper molar than that in each lower molar.5. It was suggested that the relative position of the upper and lower molars and the relation of their occlusal contacts at the intercuspal position vary depending on the clenching force.