通过叠加牙科模型来确定正畸牙齿的移动:不同叠加方法在体外和体内的比较。

IF 1.3 4区 医学 Q3 DENTISTRY, ORAL SURGERY & MEDICINE
Jana Schmitz, Ludger Keilig, Nikolaos Daratsianos, Christoph Bourauel
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引用次数: 0

摘要

目的:使用商用正畸治疗计划系统模拟牙齿移动,分析三种不同的叠加方法如何精确确定预定的移动。此外,还对正畸治疗前后的临床患者模型进行了回顾性分析,以分析这些方法在确定临床牙齿移动方面可能存在的差异。方法:(1) 使用六足系统在物理上颌牙齿模型(N = 70)中进行牙齿移动。扫描初始和最终情况,执行叠加,计算移动,并确定其与预定义移动相比的准确性。(2) 数字三维(3D)上颌骨牙科模型代表正畸治疗前和治疗后的情况(100 名患者)。结果:(1) 实验研究只产生了很小的位置和尺度偏移。此外,所有三种方法的一致性相关系数都高于 0.99。这验证了所有方法都能提供与预定运动相匹配的数值。(2) 对临床实施的正畸牙齿移动进行回顾性分析,将三种不同的方法逐一进行比较,也显示出较小的位置和尺度偏移。此外,还观察到 0.68 至 0.98 之间的一致性相关系数,其中只有三个相关系数低于 0.8。这证实了所采用的叠加方法所产生的数值非常接近:实验研究表明,预定运动和确定运动之间的一致性非常好,而回顾性临床研究表明,对于已执行的正畸牙齿运动,成对比较的方法所提供的值彼此接近,因此可以得出结论,正畸牙齿运动可以通过每种研究方法充分正确地确定。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Superimposition of dental models to determine orthodontic tooth movements : Comparison of different superimposition methods in vitro and in vivo.

Superimposition of dental models to determine orthodontic tooth movements : Comparison of different superimposition methods in vitro and in vivo.

Purpose: Using a commercial orthodontic treatment planning system, tooth movements were simulated to analyse how precise predefined movements can be determined by three different superimposition methods. Additionally, a retrospective analysis on clinical patient models before and after orthodontic treatment was performed to analyse possible differences in determination of clinical tooth movements with these methods.

Methods: (1) A hexapod system was used to perform the tooth movements in physical maxillary dental models (N = 70). The initial and final situations were scanned, superimpositions executed, movements calculated, and their accuracy compared to the predefined movements was determined. (2) Digital three-dimensional (3D) maxillary dental models representing pre- and postorthodontic treatment situations (N = 100 patients) were superimposed. Selected tooth movements were calculated (N = 3600), and the results of the different superimposition methods were compared pairwise.

Results: (1) The experimental study delivered only small location and scale shifts. Furthermore, concordance correlation coefficients above 0.99 for all three methods. This verified that all methods deliver values corresponding well to the predefined movements. (2) The retrospective analysis of the clinically performed orthodontic tooth movements comparing pairwise the three different methods intraindividually also showed small location and scale shifts. Furthermore, concordance correlation coefficients between 0.68 and 0.98 were observed, with only three of them below 0.8. This verified that the applied superimposition methods delivered values sufficiently close to each other.

Conclusions: As the experimental study showed very good agreement between the predefined and determined movements, and as the retrospective clinical study showed that the methods compared pairwise delivered values close to each other for the performed orthodontic tooth movements, it can be concluded that orthodontic tooth movements can be determined adequately correct by each of the examined methods.

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来源期刊
CiteScore
3.90
自引率
0.00%
发文量
64
审稿时长
>12 weeks
期刊介绍: The Journal of Orofacial Orthopedics provides orthodontists and dentists who are also actively interested in orthodontics, whether in university clinics or private practice, with highly authoritative and up-to-date information based on experimental and clinical research. The journal is one of the leading publications for the promulgation of the results of original work both in the areas of scientific and clinical orthodontics and related areas. All articles undergo peer review before publication. The German Society of Orthodontics (DGKFO) also publishes in the journal important communications, statements and announcements.
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