Various methods of using skeletal anchorage for the intrusion of overerupted maxillary molars have been reported; however, it is difficult to intrude the overerupted upper second molars because of the low bone density in the region of the tuberosity. This article illustrates a new treatment method using partial fixed edgewise appliances and miniscrews to intrude the overerupted upper second molars. The miniscrews were applied to reinforce the anchorage of the upper first molar. The intrusive force was generated by the Ni-Ti wire. The clinical results showed a significant intrusion effect without root resorption or periodontal problems. This report demonstrates that the combination of partial conventional fixed appliances with miniscrews is a simple and effective treatment option to intrude overerupted upper second molars, especially in situations where miniscrews cannot be inserted directly next to the second molar.

中文翻译：

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用小螺钉侵入过度弯曲的第二磨牙的简单方法

已经报道了多种利用骨骼锚固术侵入过度上颌磨牙的方法。然而，由于结节区域的骨密度低，难以侵入第二磨牙的拔牙。本文介绍了一种新的治疗方法，该方法使用局部固定的边缘矫治器和微型螺钉侵入过度突出的第二磨牙。施加微螺钉以增强上部第一磨牙的锚固。侵入力是由镍钛丝产生的。临床结果显示出显着的侵入效果，而没有牙根吸收或牙周问题。该报告表明，将部分常规固定器具与微型螺钉结合使用是一种简单而有效的治疗选择，可以使第二磨牙过度隆起，