Department of Orthodontics and Dentofacial Orthopaedics, Faculty of Dental Medicine, Damascus University, Damascus, Syria.
Department of Oral Medicine, Higher Institute for Laser Research and Applications, Faculty of Dental Medicine, Damascus University, Damascus, Syria.
Biomed Res Int. 2023 Jun 27;2023:5549951. doi: 10.1155/2023/5549951. eCollection 2023.
It is essential to be aware of the potential effects of orthodontic treatment on tissues and anatomical structures associated with the masticatory system, especially the temporomandibular joint (TMJ). Little information is available about the consequences of molar distalization on the TMJ. Therefore, this study is aimed at investigating the changes of the condyle-fossa relationship after molar distalization using the distal jet appliance.
The sample consisted of twenty-five patients (mean age 20.4 ± 2.6) who underwent molar distalization by the distal jet appliance. CBCT scans were taken before (T0) and after (T1) the completion of the molar distalization. Joint spaces (anterior, superior, and posterior) and cephalometric vertical angles (SN.GOME and Björk sum) were measured and compared at T0 and T1.
Superior and posterior joint spaces increased significantly after molar distalization (PS 0.29 mm, < 0.001, SS 0.06 mm, < 0.5). Vertical cephalometric angles also increased after molar distalization by the distal jet appliance (SN.GOME 0.92°, Björk 1.11°).
There was a statistically significant increase in the superior and posterior joint spaces after molar distalization. However, this increase may not be of clinical importance. The vertical dimension has also increased.
了解正畸治疗对咀嚼系统相关组织和解剖结构（尤其是颞下颌关节 [TMJ]）的潜在影响至关重要。关于磨牙远移对 TMJ 的影响，相关信息有限。因此，本研究旨在通过远移喷粉装置探讨磨牙远移后髁突-窝关系的变化。
本样本包括 25 名患者（平均年龄 20.4 ± 2.6 岁），他们通过远移喷粉装置进行了磨牙远移。在磨牙远移完成前（T0）和完成后（T1）拍摄 CBCT 扫描。测量并比较 T0 和 T1 时的关节间隙（前、上和后）和头影测量垂直角度（SN.GOME 和 Björk 总和）。
磨牙远移后，上、后关节间隙显著增加（PS 0.29mm，<0.001，SS 0.06mm，<0.5）。远移喷粉装置远移磨牙后，垂直头影测量角度也增加（SN.GOME 0.92°，Björk 1.11°）。
磨牙远移后上、后关节间隙有统计学显著增加。然而，这种增加可能没有临床意义。垂直维度也增加了。
