Damon Q自锁托槽在数字化牙颌模型上的模拟定位研究

发布时间：2018-03-12 19:48

本文选题：托槽定位　切入点：美国正畸目标评分系统　出处：《华西口腔医学杂志》2015年05期 　论文类型：期刊论文

【摘要】：目的探讨数字化托槽模拟定位的准确性。方法对15例数字化牙颌模型上的牙齿(每例28颗)进行托槽模拟定位,定位方法分别采用托槽高度定位法和含牙根信息托槽定位法。采用Ortho Rx软件形成矫治后的最终状态;采用美国正畸目标评分系统(ABO-OGS)评估矫治结果,测量指标包括牙齿排齐、后牙边缘嵴高度及牙根平行度3项。结果 1)虚拟矫治后两种托槽定位方法的边缘嵴高度扣分均小于治疗前(P0.05),但两种方法虚拟矫治后边缘嵴高度扣分没有统计学差异(P0.05)。2)含牙根信息托槽定位法虚拟矫治后牙根平行度扣分小于托槽高度定位法,但两种方法虚拟矫治前后牙根平行度未发生明显改善。3)在牙齿排齐及3项总扣分方面,两种托槽定位方法在虚拟矫治前后扣分的差异有统计学意义,矫治后扣分均小于治疗前,含牙根信息托槽定位法矫治后的扣分小于托槽高度定位法(P0.05)。结论在重建的包含牙根的三维数字化模型上,采用Ortho Rx软件,通过托槽高度定位法及含牙根信息定位法进行托槽定位,模拟矫治均有效果;通过含牙根信息托槽定位法的模拟矫治效果更好。
[Abstract]:Objective to investigate the accuracy of digital bracket analogue localization. Ortho Rx software was used to form the final state of orthodontic treatment, and the American orthodontic target scoring system (ABO-OGS) was used to evaluate the results of orthodontic treatment. Results 1) after virtual orthodontic treatment, the marginal ridge height deduction points of the two methods were lower than that of P0.05 before treatment, but there was no significant difference between the two methods. After virtual correction, the score of tooth root parallelism was lower than that of bracket height localization. However, there was no significant improvement in root parallelism between the two methods before and after virtual orthodontic treatment. 3) there were significant differences in tooth alignment and three total points between the two methods before and after virtual correction. The points of deduction after correction by bracket positioning method with root information are lower than that by bracket height positioning method P0.050.Conclusion Ortho Rx software is used to reconstruct the three-dimensional digital model with tooth root. The simulated orthodontics are effective by the method of height positioning of brackets and information positioning of teeth containing root, and the effect of simulation correction is better by the method of locating brackets with information of teeth root.
【作者单位】：广东省口腔医院正畸科;西安恒惠科技有限公司;广东省口腔医院牙周病科;
【分类号】：R783.5

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