1.       建立的带有肌肉和韧带约束的正常下颌骨三维有限元模型及模型1、模型2。

2.       下颌骨全模型应力分布情况: 颏部受撞击后1.8ms, 撞击应力开始向四周扩散, 应力传导主要沿外斜线方向传播并且集中于髁突颈部。撞击后12.5ms髁突颈前内侧受力集中部位达到应力的峰值后, 下颌骨各处应力呈回落状态, 随后下颌骨各部位应力渐消散。在整个过程中, 按本研究前期划分的下颌骨后缘、下颌角区、下缘近下颌角区域一直处于应力较小的状态。葡萄牙语翻译

3.       实验组模型1下颌骨模型应力分布情况: 模型1的应力传导和分布与正常下颌骨很相似, 但下颌骨各部应力范围、强度明显减小, 在云图上表现出较正常下颌骨云图颜色变浅, 同种颜色区域变小。在加载撞击载荷11～12.5ms后, 下颌骨乙状切迹、喙突以及牙槽脊附近较颜色较正常下颌骨由应力较小的浅蓝色变成代表应力较大的黄色。意大利语翻译

1. A three-dimensional finite element model of the normal mandible with muscle and ligament constraint, a model 1 and a model 2 were constructed.

2. The stress distribution on the whole model of the mandible: the impact stress began to spread around 1.8ms after the mentum impact and the stress mainly conducted along the external oblique direction and concentrated at the mandible condyle. After the stress on the concentration part of the anterior, internal side of the mandible condyle reached the summit of the stress 12.5ms after the impact, the stress on the mandible was in a downward status and disappeared gradually. In the whole process, the posterior edge of the mandible, the mandibular angle area and the lower edge which was close to the mandibular angle area mentioned in the former part of the study were always in a less stress state.

3. The stress distribution of the mandible model 1 of the experimental group: the stress conduction and distribution of the model were similar to the normal mandible; however, the scope and the intensity of the stress on the mandible were reduced apparently. Compared with the nephogram of the normal mandible, the color intensity of the nephogram of model 1 was weakened and the similar color area became smaller. After 11～12.5ms the addition of the impact load, the color of the surrounding area of the moid notch of the mandible, coracoid process and alveolar ridge turned from less stress blue into more stress yellow when compared with the normal mandible.