摘要
目的应用微型种植体支抗内收上颌前牙,观察上颌前牙及第一磨牙位置的变化,评价微型种植体作为强支抗的应用效果。方法从临床病例中选择20例双颌前突的患者,矫治设计拔除4颗第一双尖牙,随机选择10例在后牙区植入微螺钉型种植体支抗内收前牙,另10例采用腭杆加口外弓的支抗方法。于治疗前拍摄螺旋CT,了解种植区的解剖情况,于治疗前及关闭拔牙间隙后拍摄X线头颅侧位片,测量前牙内收情况及磨牙支抗的变化。用配对t检验比较治疗前后的差异。结果①微型钛钉种植体在拔牙间隙关闭的过程中保持了稳定,成功率93%。②种植体支抗较非种植体强支抗治疗前、后上中切牙倾角及凸距的改变有显著性统计学意义(P<0.05);两组磨牙位移的差异有统计学意义(P<0.05);下切牙切端位移的差异无统计学意义(P>0.05)。结论初步临床观察结果表明,微型钛钉种植体能作为稳定的骨性正畸支抗,可以实现理想的支抗控制效果。
Objective To investigate the position changes of the upper molars,incisors and lower incisors with the application of microscrew implant anchorage during orthodontic treatment.Methods Twenty patients with severe maxillary protrusion were selected according to the selection criteria and randomly divided into 2 groups,including micro-implant anchorage group and traditional orthodontic anchorage group.The upper and lower first premolars were extracted in both groups and multi-slice spiral CT was applied for th...
出处
《现代口腔医学杂志》
CAS
CSCD
2009年第1期17-19,共3页
Journal of Modern Stomatology
关键词
微型种植体
支抗
稳定性
正畸治疗
Micro-implant Anchorage Stability Orthodontic treatment
