The trend of stress distribution on condylar cartilage was not compressive stress on the posterior inclined plane and tensile stress on the anterior inclined plane.

• 上颌第一磨牙牙周膜中应力分布较尖牙小得多，这说明多根牙在承受外力后，将力量分散于面积较大的牙周膜和牙槽中隔，能承受较大的外力。