Influence of Implant Connection on Mandibular Flexure in Jaw Movement: Three-dimensional Finite Element Analysis.
Influence of Implant Connection on Mandibular Flexure in Jaw Movement: Three-dimensional Finite Element Analysis.
复制标题
种植体连接对下颌运动中下颌弯曲的影响：三维有限元分析。
DOI：
10.2186/jjps.42.580
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发表时间：
1998
期刊：
影响因子：
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通讯作者：
M. Hada
中科院分区：
文献类型：
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作者：
M. Noda;Masatoshi Ishikawa;T. Ichikawa;H. Kanitani;Y. Tomotake;N. Kawamoto;K. Nagao;F. Kawano;M. Hada
在以前的报告中，两个种植体之间的相对位置进行了测量，在下颌运动，下颌弯曲的变化进行了评价。在本研究中，构建三维有限元模型，将6个钛种植体放置在下颌骨的右半部分，并制备3个模型：1）连接：所有种植体都连接，2）仅前部：仅前部3个种植体连接，3）未连接：没有种植体连接。通过三维有限元模型的线性静态应力分析，讨论了连接对种植体和周围骨的影响。结果如下：1.根据先前报告的种植体偏离数据计算施加于下颌髁突的内部载荷值。该值为20 N。2.在三个模型中，植入物向内侧-向后偏移，并且从4号植入物区域开始，偏移急剧增加。3.“非连接”模型中种植体周围的应力为8 MPa，“仅前牙”和“连接”模型中种植体周围的应力较低。结果表明，种植体连接对下颌弯曲运动中种植体和周围骨的影响很小。
In the previous report, the relative position between two implants was measured during jaw movements, and mandibular flexure was evaluated as the change. In the present study, three-dimensional finite element models were constructed so that six titanium implants were placed in the right half of the mandible, and three models were prepared: 1) Connected: all implants were connected, 2) Anterior only: anterior three implants only were connected, and 3) Not connected: no implant was connected. The influence of the connection on the implant and the surrounding bone determined by linear static stress analysis of 3-D finite element model was discussed. The results were as follows: 1. The inside loading value applied to the mandibular condyle was calculated from the implant deviation data of previous reports. The value was 20 N. 2. In three models the implant was deviated medial-backward and the deviation drastically increased from the Implant No. 4 region. 3. The stress of 8 MPa around the implant in the "Not connected" model was observed, and that of "Anterior only" and "Connected" models was lower. It was suggested that implant connection hardly affects the implant and the surrounding bone during mandibular flexure in jaw movements.