Long-term stability of maxillary group distalization with interradicular miniscrews in a patient with a Class II Division 2 malocclusion
Long-term stability of maxillary group distalization with interradicular miniscrews in a patient with a Class II Division 2 malocclusion
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DOI：
10.1016/j.ajodo.2015.07.045
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发表时间：
2016-06-01
影响因子：
3
通讯作者：
Tanaka, Eiji
中科院分区：
文献类型：
--
作者：
Kuroda, Shingo;Hichijo, Natsuko;Tanaka, Eiji
我们成功地使用根间微型螺钉治疗了2类患者上颌群远端。女性，28岁11个月，有一个凸出的轮廓和过度的覆盖引起的骨骼II类颚基关系。矫直对准后，在上颌第二前磨牙和第一磨牙之间斜植入钛微钉。为了使上颌牙列离远，在弓丝上的螺钉和钩之间放置2-N载荷的镍钛闭合线圈弹簧。经过28个月的积极正畸治疗，获得了正确的面部轮廓和可接受的咬合，上颌牙列远端4毫米。在5年的保留期内，所产生的咬合是稳定的。根间微钉对上颌牙列远端矫正II类错颌是有用的。这种新的策略，用微型支架进行群体远端，可以使治疗更简单，更有可预测性。
We successfully treated a Class II Division 2 patient with maxillary group distalization using interradicular miniscrews. A woman, aged 28 years 11 months, had a convex profile and an excessive overjet caused by a skeletal Class II jaw-base relationship. After leveling and alignment, titanium miniscrews were obliquely implanted between the maxillary second premolar and first molar. To distalize the maxillary dentition, nickel-titanium closing coil springs with a 2-N load were placed between the screws and the hooks on the archwire. After 28 months of active orthodontic treatment, a proper facial profile and an acceptable occlusion were achieved with a 4-mm distalization of the maxillary dentition. The resultant occlusion was stable throughout a 5-year retention period. Interradicular miniscrews were useful to distalize the maxillary dentition for correcting a Class II malocclusion. This new strategy, group distalization with miniscrews, can make the treatment simpler with greater predictability.