【摘要】 目的　探讨微型支抗种植体即刻加力的稳定性。方法　 2 0 0g力值作用下 ,以微型种植体为支抗 ,牵拉犬上下颌第二前磨牙 ,以及种植体间交互牵引 ,观察 2个月后牵引侧和对照侧牙齿及微型支抗种植体位移情况。结果　被牵引牙齿均较对照侧发生明显位移 ,实验结束时微型种植体无松动 ,大多微型种植体位移不显著。结论　微型种植体植入后可即刻施加 2 0 0g水平力 ,用作移动牙齿的支抗更多还原

【Abstract】 Objective To study the stability of micro-implant anchorage which were loaded immediately. Methods After loaded with orthodontic force of 200g for 2 months, the movement of micro-implants and the dogs’ second premolars anchored by micro-implant were studied. Results All the loaded premolars showed apparent displacement, while the micro-implants kept stable and most of them moved little.Conclusion The micro-implant could withstand 200 g of immediate horizontal loading as an orthodontic anchorage.更多还原