【作者】 焦海霞；

【导师】 刘海霞；

【作者基本信息】 新疆医科大学 ， 口腔临床医学， 2011， 硕士

【摘要】 目的：探讨推磨牙远中移动技术治疗安氏Ⅱ类错合畸形的临床疗效,分析总结各类推磨牙远中移动矫治器的结构和矫治应用特点、支抗控制、适应证选择和并发症处理等。方法：对2009年6月至2011年3月在新疆医科大学第二附属医院口腔科要求矫治并处在生长发育高峰前期或高峰期的安氏Ⅱ类错合6例,使用推磨牙向远中移动来扩展牙弓间隙。其中2例选择磨牙推进器和Nance托支抗推磨牙向远中,3例选择活动的推磨牙远中矫治器配合口外弓,1例选择“摆”式矫治器单侧推磨牙向远中。矫治过程中每4周复诊加力一次,治疗结束后,进行模型和头影侧位片的相关测量分析。结果：6例患者中只有1例患者磨牙远移失败,采用拔牙固定矫治。其余的磨牙关系都纠正为I类关系。X线头影测量显示,颌骨的位置没有明显的变化,上颌磨牙与腭平面、SN平面所成的角在治疗后均减小,表明上颌磨牙在远移的过程中发生了倾斜。结论：3种推磨牙矫治器均可有效地推磨牙向远中移动,但在治疗过程中,掌握好适应症的选择、支抗控制、并取得患者的配合非常重要。更多还原

【Abstract】 Objective:To investigate clinical effect with maxillary molar distalization on class II malocclusion and analyse appliance characteristic, usage and anchorage control. Methods: Six patients with class II malocclusion were chosen from June 2009 to March 2011 in the stomatology department of the Second Hospital affiliated to XinJiang Medical University, and the method of maxillary molar distalization were adopted, of which three cases were treated with headgear and removable appliance, two with man-made molar distalization appliances and the second premolar Nance arch, one with pendulum appliance. After treatment analyse molar distalization effect, the plaster cast change and X cephalometric. Results:Only one patient failed in molar distalization and was changed into extraction and fixed appliance in six cases. The rest cases achieved the goal of molar distalization, and molar relationships were corrected as neutral ones. X cephalometric showed no obvious jaw position changes, and the angles between maxillary molars and the palatal plane, and between maxillary molars and the SN plane decreased, indicating that the molars were tilt in the process of the maxillary molar distalization. Conclusion:Three kind of distalization appliances are effective on class II malocclusion correct, but it is important to grasp proper indication and the suitable anchorage form and get patient compliance.更多还原