腭中部微种植钉支抗系统的临床效果评价

发布时间：2018-11-02 09:26

【摘要】：目的:初步探讨腭中部微种植钉支抗系统在固定矫治中的支抗效果,为正畸临床支抗的选择提供参考。方法:选择骨性Ⅰ、Ⅱ类需上颌强支抗的青少年正畸患者14例作为研究对象,均采用双颌固定矫治器进行正畸治疗,在上颌减数两颗第一双尖牙并在腭中线旁、第一磨牙水平植入微种植钉一颗。以0.019 inch×0.022 inch(1inch=2.54 cm)的不锈钢方丝横腭杆固定连接微种植钉和双侧上颌第一磨牙,组成一个腭中部微种植钉支抗系统进行正畸力的负载,下牙列不纳入研究。植入微种植钉时(T0)、上颌间隙关闭或基本关闭时(T1)分别拍摄头颅侧位片进行头影测量描图。分别采用SN-7平面及PP平面作为参考平面,对微种植钉以及上颌第一磨牙在T0、T1的位置差异进行头影测量分析。采用配对t检验进行统计学分析。结果:腭中部微种植钉植入后的临床成功率为73.9%。14例进行测量分析的病例中,微种植系统负载正畸力后仍保持稳固,双侧第一磨牙没有发生明显的近中移动。微种植钉以及上颌第一磨牙的位置变化在两组间的差异没有统计学意义。结论:本研究中设计的腭中部微种植支抗系统具有较好的稳定性,在正畸治疗中能够起到强支抗的作用,可作为一种正畸强支抗的可选方案在临床中应用。
[Abstract]:Objective: to explore the effect of microimplant Anchorage system in the middle palatine for the selection of orthodontic Anchorage. Methods: fourteen cases of juvenile orthodontic patients who need strong maxillary Anchorage were selected as the study objects. All of them were treated with double jaw fixed appliance. The first bicuspid teeth were subtracted from the maxilla and next to the midline of the palate. The first molars were horizontally implanted with a microimplant nail. A 0.019 inch 脳 0.022 inch (1inch=2.54 cm) stainless steel square wire transverse palate rod was used to fix the micro-implant nail and bilateral maxillary first molar to form a mid-palatal implant Anchorage system for orthodontic loading. The lower dentition was not included in the study. When microimplant nail was implanted (T _ 0) and maxillary space was closed or basically closed (T _ 1), lateral cephalograms were taken for cephalometric tracing. The SN-7 plane and PP plane were used as reference plane to measure the position difference of the first maxillary molars and implants in T _ 0 T _ 1. The paired t test was used for statistical analysis. Results: the clinical success rate was 73.9% in the middle palatal implants. 14 cases were measured and analyzed. The orthodontic force of the microimplant system remained stable, and the bilateral first molars had no significant proximal movement. There was no significant difference between the two groups in the position changes of the microimplant nail and the maxillary first molar. Conclusion: the microimplant Anchorage system designed in this study has good stability and can play a role of strong Anchorage in orthodontic treatment. It can be used in clinic as an alternative scheme of orthodontic strong Anchorage.
【作者单位】：北京大学口腔医学院·口腔医院第二门诊部正畸科;
【基金】：北京大学口腔医院临床新技术新疗法项目(PKUSSNCT-12B14)资助~~
【分类号】：R783.5

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