本文报道了两侧正畸治疗导致牙槽骨自发性折裂的病例。两名20多岁的年轻患者用链状橡皮圈以3.5OZ(约90g)的初始力矫正下颁偏斜时,发生急性锐痛。X线片显示牙槽骨折裂。停止正畸牵引后,10周内牙槽骨折裂愈合,正畸治疗可持续至完成。 该研究结果显示:营养管通过薄的牙槽中隔;在拔牙区,骨髓腔及下颌联合等处,骨小梁致密度较低。这些结构形成了牙槽骨的薄弱区。正畸治疗中运用水平 This article reports the cases of spontaneous rupture of alveolar bone caused by orthodontic treatment on both sides. Two young men in their 20s were acutely anguished with a chain rubber band that corrected skew at an initial force of 3.5 OZ (about 90 g). X-ray showed alveolar fracture. After stopping the orthodontic traction, the alveolar bone fracture healed within 10 weeks and the orthodontic treatment could be completed till the completion. The results of this study show that the nutrient tube passes through a thin alveolar septum and that the trabeculae density is lower in the extraction area, the bone marrow cavity and the mandibular joint. These structures form the weakened area of ​​the alveolar bone. The level of orthodontic treatment