腭侧微螺钉型种植体支抗治疗上颌前突的临床应用研究

【摘要】 目的 观察腭侧微螺钉型种植体支抗在上颌前突治疗中的临床应用。方法：选择上颌前突的拔牙矫正患者22人，矫治设计需强支抗，随机分成研究组和对照组两组，每组11人，患者年龄为18岁-25岁，试验组上颌双侧腭侧应用微螺钉型种植体支抗，对照组用口外弓支抗，对治疗前后利用X线头颅片进行测量，运用统计学方法比较两组治疗前后软硬组织的变化差异。结果 试验组： 治疗后U1-NA、U1 -SN较治疗前减小，U1 -L1较治疗前增大（P<0.05）。对照组：治疗后U1-NA、U1 -SN较治疗前减小， U1 -L1、U6-PtPNS数值较治疗前增大（P<0.01）。试验组U1 -L1数值改变量大于对照组，U6-PtPNS数值该变量小于对照组（P<0.01）。结论 治疗上颌前突患者，上颌需要强支抗时，可应用腭侧微螺钉型种植体支抗。

Comparative study of microscrew implant for orthodontic anchorage and extraoral arch anchorage in patients with maxillary protrusion

［Abstract］ Objective：To investigate the clinic application of the treatment of maxillary protrusion malocclusion with micro implant anchorage. Method ： 32 patients with maxillary protrusion were divided into two groups randomly with 16 patients in each group, whose ages ranged from 18 to 25 years. All patients were treated with extraction. Micros crew palatal implant was used in the cases of experimental group as orthodontic anchorage，and traditional anchorage composed of extraoral arch used in the control cases. The cephalometric films before and after treatment were measured , Statistical methods were utilized to analyze the morphological changes of facial profile and hard tissues in both groups. Results：The　 U1-NA(mm) and U1 – SN(o) average after treatment were less than that before treatment in the experimental group（P<0.01）and the controls group（P<0.01）, and U1 - L1(mm) average after treatment were more than that before treatment（P<0.05）in the experimental group（P<0.05）and the controls group（P<0.05）. The U6-PtPNS(mm) average after treatment were more than that before treatment（P<0.01）in the controls group Conclusion：Treatment of patients with maxillary protrusion need with strong anchorage, can be used implants palatal side micro screw type .