应用微种植体支抗不拔牙矫治重度牙列拥挤(1)
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[摘要]目的:探讨采用微种植体非拔牙矫治重度牙列拥挤的临床效果及特点。方法:患者12例,均为安氏II类错牙合,面型基本正常,上牙弓拥挤度>8mm,在上颌颊侧牙槽骨共植入24枚微种植体,将Ni-Ti螺旋推簧置于上颌第二前磨牙与上颌第一磨牙之间,推磨牙远移,术前后行X线头影测量和模型分析。结果:12例重度拥挤患者治疗后均达到满意效果,牙列整齐,咬合关系正常,面型良好,治疗前后SNA、SNB、U1-NA未见明显变化(P>0.05),上颌第一磨牙平均远中移动距离5.48mm(P<0.01),其颊向移动距离及旋转角度无统计学意义。结论:应用微种植体推磨牙向远中能成功的非拔牙矫治重度牙列拥挤,种植体支抗在磨牙远移过程中,发挥了绝对强支抗作用。
[关键词]重度牙列拥挤;非拔牙矫治;微种植体支抗
[中图分类号]R783.5 [文献标识码]A [文章编号]1008-6455(2010)05-0734-04
Non-extraction treatment for patients with severe dentition crowding by microimplant
FENG Xiao-bin,LIN Jie
(Department of Stomatology,Heyuan's Hospital,Heyuan 517000,Guangdong,China)
Abstract:ObjectiveTo evaluate the clinical effectiveness and characteristics of non-extraction treatment for patients with severe dentition crowding by microimplant MethodsTwelve patients ofclass II maloalusion with harmony profile and dentition crowding above 8 mm were selected. Twenty-four microimplants were embedded in buccal alveolar ......
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