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微钛钉种植支抗治疗骨性Ⅱ类错牙合畸形18例

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摘要 目的探讨微钛钉种植支抗在骨性Ⅱ类错(牙合)中的临床应用。方法18例Ⅱ类错(牙合)患者,上颌前突,矫治设计为拔除双侧第一前磨牙,支抗设计为磨牙强支抗,用微钛钉植入上颌第一磨牙第二前磨牙颊侧根尖之间的牙槽间隔,结合直丝弓技术进行滑动法关闭拔牙间隙。以每侧150~200g力滑动法内收前牙。比较内收前牙前、后头颅定位侧位片,测量前牙内收情况和磨牙支抗的变化。结果18例牙弓突度均得到明显改善,切牙切缘平均内收6.5mm,支抗磨牙平均前移0.5mm,有效地控制了后牙支抗。结论微钛钉种植支抗作为稳定的正畸支抗,不依赖患者的合作,能有效地控制后牙支抗,使前突的牙弓得到较完美的矫治,扩大了正畸治疗的范围。
作者 罗旭明
出处 《浙江实用医学》 2006年第4期281-282,共2页 Zhejiang Practical Medicine
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