自攻型微钛钉支抗在矫治成人上颌前突中的临床应用(1)
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[摘要]目的:探讨自攻型微钛钉矫治成人上颌前突的临床疗效。方法:应用自攻型微钛钉作为支抗矫治19 例安氏II类1分类上颌前突成年患者,拔除双尖牙并排齐牙列后,微钛钉植入上颌第一恒磨牙和第二前磨牙颊侧,2周后以每侧1.0~1.5 N 滑动内收前牙。通过前后X线头影测量分析,比较前牙内收情况和磨牙支抗的变化。结果:19例上颌前突均得到明显改善,切牙切缘平均内收7.49mm,切牙牙轴与SN交角平均减少17.94°,与NA交角平均减少12.46°,前牙覆盖平均减少了7.4mm,上颌切牙治疗前后差异有统计学意义(P<0.05)。上颌第一磨牙平均前移0.38 mm,上颌第一磨牙治疗前后垂直向移动差异无统计学意义,94.7%种植体保持了稳定。结论:自攻型微钛钉能够有效治疗上颌前突成年患者,改善侧貌,起到强支抗的作用。
[关键词]正畸支抗;上颌前突;安氏II类1分类;自攻型微钛钉
[中图分类号]R783.5 [文献标识码]A[文章编号]1008-6455(2010)03-0378-03
The clinical application of self-drilled titanium-alloy miniscrew as anchorage in treating adult patients with maxillary protrusion
ZHANG Ying,ZHANG Ze-biao,ZENG Jin-biao,YANG Chun-ling
(Department of Stomatology,Quanzhou First Hospital,Fujian Medical University,Quanzhou 362000,Fujian,China)
Abstract:ObjectiveThe purpose of this study was to evaluate the treatment results of adult patients with Maxillary Protrusion by using self-drilled titanium-alloy miniscrew as anchorage ......
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