一个长度圆束计算机断层扫描研究管在生长过程中的变化
Stephanie H Chen1, Normand Boucher1, Chun-Hsi Chung1
1Department of Orthodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA.
Orthodontics & craniofacial research
|September 4, 2025
概括
下通道
科学领域:
- 牙科学
- 牙整形
- 人体解剖学
背景情况:
- 沟通常被视为2D成像中的稳定参考.
- 在生长过程中其横向维度的稳定性尚不清楚.
研究的目的:
- 研究下管在生长过程中的尺寸和位置变化.
- 评估下管作为3D参考结构的可靠性.
主要方法:
- 使用形束计算断层扫描 (CBCT) 进行后续纵向研究.
- 在17个受试者中对两个时间点的扫描进行3D叠加 (混合到早期的永久牙).
- 评估通道尺寸,通道间距离和通道到口腔之间的距离.
主要成果:
- 管尺寸显示后部稳定,但前部增加.
- 一个横向的转移发生了,但不是简单的身体或V形运动.
- 管道与下体相对的位置不断变化.
结论:
- 在混合到早期永久牙期中,下管尺寸和侧面位置发生显著的发育变化.
- 这些发现挑战了下通道绝对稳定的假设.
- 在纵向研究和治疗规划中使用下管作为固定参考的含义.
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