应用微种植支抗治疗成人上颌前突矫治前后（牙合）平面的变化

发布时间：2018-03-11 01:03

  本文选题：种植体　切入点：支抗　出处：《大连医科大学》2017年硕士论文　论文类型：学位论文

【摘要】：目的:探讨应用微种植体支抗治疗成人上颌前突矫治前后上颌(?)平面的变化,以及上颌前牙与后牙水平向、垂直向的改变,为临床上前后牙移动时对(?)平面的控制提供参考依据。方法:从沈阳市口腔医院2014年～2016年就诊的所有上颌前突的患者中筛选出符合纳入条件的矫治结束病例48份。根据治疗方法分为实验组和对照组,每组24例,实验组患者男性8例,女性16例,平均年龄27.17 ± 5.10岁;对照组患者男性10例,女性14例,平均年龄25.90 ± 6.07岁。矫治设计均为拔除双侧上颌第一双尖牙,实验组利用种植体支抗滑动内收上前牙,关闭拔牙间隙;对照组利用口外弓支抗滑动内收上前牙,关闭拔牙间隙。数据统计采用SPSS17.0软件进行分析,对两组患者矫治前后头颅侧位片数据的平均值和标准差分别采用配对t检验进行对比分析,两种矫治方法的治疗前后变化量的比较进行独立样本t检验,检验水准P0.05说明差异有统计学意义。结果:两组患者矫治结束后均能获得良好的咬合关系,但在前后牙移动、上颌(?)平面及下颌平面角的控制上有所差异。上颌(?)平面(OP-SN)的变化实验组增大3.2°,对照组增大4.5°,P0.01,差异具有高度显著性意义。下颌平面角(MP-SN)实验组无明显改变,对照组增加1.9°,P0.01,差异具有高度显著性意义。前牙覆(?)(OB)覆盖(0J)改变两组对比不明显,P0.05,无统计学意义。上颌中切牙切缘至腭平面的垂直向距离(U1-PP)实验组增加了 0.4mm，对照组增加了 1.7mm,P0.01,两组数值变化差异显著;上颌中切牙根尖至RL线的距离(U1R-RL)实验组减小1.5mm,对照组减小0.9mm,P0.05,两组数据变化差异显著;水平向,上颌中切牙至RL线的距离(U1-RL)实验组减小6.8mm,对照组减小4.7mm,P0.01,两组数值差异显著。在垂直向,上颌第一磨牙治疗前后两组不存在显著差异;水平向,实验组上颌第一磨牙远中移动0.1mm,对照组近中移动2.2mm,P0.01,差异具有高度显著性意义。结论:1.微种植体在治疗上颌前突的过程中可以提供稳固的支抗,充分利用拔牙间隙,上前牙回收明显、有效避免了后牙支抗的丧失。2.应用微种植体支抗内收上前牙的过程中,上颌(?)平面会发生顺时针旋转。3.利用微种植体支抗治疗上颌前突较口外支抗能减少上颌(?)平面的顺时针旋转,更好的控制垂直向距离,有效避免了下颌骨的顺时针旋转。
[Abstract]:Objective: to explore the application of microimplant Anchorage in the treatment of adult maxillary protrusion before and after treatment. ) the changes of the plane and the horizontal and vertical direction of the maxillary anterior and posterior teeth are related to the clinical changes of the anterior and posterior teeth. Methods: from 2014 to 2016, 48 patients with maxillary protrusion were selected and divided into experimental group and control group. There were 24 patients in each group, 8 males and 16 females in the experimental group with an average age of 27.17 卤5.10 years, and 10 males and 14 females in the control group with an average age of 25.90 卤6.07 years. The experimental group used implant Anchorage to close the extraction space, while the control group used external arch to close the extraction space. SPSS17.0 software was used to analyze the data. The average value and standard deviation of head lateral radiographs before and after orthodontic treatment were analyzed by paired t test, and the changes of the two methods before and after treatment were compared with independent sample t test. Results: two groups of patients after orthodontic treatment can obtain a good occlusion relationship, but in front and back teeth movement, maxillary? ) there are differences in the control of the angle between the plane and the mandible. ) the changes of OP-SNs in the experimental group increased 3.2 掳, the control group increased 4.5 掳(P0.01), the difference was highly significant, but there was no significant change in the experimental group, and the increase in the control group was 1.9 掳(P0.01), the difference was highly significant. There was no significant difference between the two groups (P 0.05). The vertical distance from the incisor of maxillary incisor to the palatal plane was increased by 0.4 mm in the experimental group and 1.7 mm in the control group (P 0.01). The difference between the two groups was significant. The distance from the root tip to the RL line of maxillary central incisor decreased by 1.5 mm in the experimental group and 0.9 mm in the control group (P 0.05). The distance between the maxillary central incisor and the RL line decreased by 6.8 mm in the experimental group and 4.7 mm in the control group (P 0.01). There was no significant difference between the two groups in the vertical direction, the maxillary first molar before and after treatment. The maxillary first molar moved 0.1 mm far in the experimental group and the control group moved 2.2 mm in the distance (P 0.01), the difference was significant. Conclusion: the microimplant can provide stable Anchorage during the treatment of maxillary protrusion, and make full use of the extraction space. The recovery of anterior teeth is obvious, which effectively avoids the loss of Anchorage of posterior teeth. ) the plane will rotate clockwise. 3. Using microimplant Anchorage to treat maxillary protrusion can reduce maxillary bulge than external Anchorage. The clockwise rotation of the plane can better control the vertical distance and effectively avoid the clockwise rotation of the mandible.
【学位授予单位】：大连医科大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：R783.5
，

本文编号：1595869