Hasegawa Yoko, Kakimoto Naoya, Tomita Seiki, Honda Kosuke, Tanaka Yuto, Yagi Kazutomo, Kondo Jyugo, Nagashima Tadashi, Ono Takahiro, Maeda Yoshinobu
Division of Oromaxillofacial Regeneration, Osaka University Graduate School of Dentistry, Osaka, Japan.
Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2011 Nov;112(5):640-7. doi: 10.1016/j.tripleo.2011.06.013. Epub 2011 Sep 16.
The aim of this study was to evaluate, with the use of magnetic resonance images, mandibular condyle and articular disc movement on occlusal splint application.
Thirty-five subjects were classified into "Pain" and "No-pain" groups based on visual analog scale scoring of temporomandibular joint (TMJ) pain and were categorized as bilateral normal disc (ND), unilateral anterior disc displacement (ADD), or bilateral ADD position. t test and analysis of variance with multiple comparisons were used for statistical analyses.
Pain and No-pain groups showed significant anteroinferior and rotated movement of the condyle on splint application, but the disc did not significantly move in the Pain group. Of all groups, anteroposterior movement of the condyle and disc with the splint was significantly less in the unilateral ADD group.
TMJ pain was associated with decreased movement of the articular disc. Disc and condyle movement was different in the unilateral ADD group in the presence of a splint compared with the ND and bilateral ADD groups.
本研究旨在利用磁共振成像评估咬合板应用时下颌髁突和关节盘的运动情况。
根据颞下颌关节（TMJ）疼痛的视觉模拟量表评分，将35名受试者分为“疼痛”组和“无疼痛”组，并根据双侧正常盘（ND）、单侧盘前移位（ADD）或双侧ADD位置进行分类。采用t检验和多重比较方差分析进行统计学分析。
疼痛组和无疼痛组在应用咬合板时髁突均出现明显的前下和旋转运动，但疼痛组的关节盘未出现明显移动。在所有组中，单侧ADD组应用咬合板时髁突和关节盘的前后运动明显较少。
TMJ疼痛与关节盘运动减少有关。与ND组和双侧ADD组相比，单侧ADD组在应用咬合板时关节盘和髁突的运动有所不同。
