Ahn Sug-Joon, Kim Tae-Woo, Lee Dong-Yul, Nahm Dong-Seok
Department of Orthodontics, Dental Research Institute and College of Dentistry, Seoul National University, Seoul, South Korea.
Am J Orthod Dentofacial Orthop. 2006 Apr;129(4):479-85. doi: 10.1016/j.ajodo.2005.12.009.
Panoramic radiographs are routinely used in orthodontic diagnosis and treatment planning. It would be useful if these radiographs could also provide information about internal derangement (ID) of the temporomandibular joint (TMJ).
The sample consisted of 168 condyles in 84 women. They underwent panoramic radiography on 1 of 3 machines and bilateral magnetic resonance imaging of the TMJ on 1 machine. Six panoramic variables were analyzed by 2-factor ANOVA to evaluate differences in condylar morphology with respect to status of the TMJ ID and type of panoramic machine.
Decreased condylar heights and distally inclined condyles were found in the patients with TMJ ID, irrespective of the type of panoramic machine used. The change became more severe as ID progressed to disk displacement without reduction.
This study suggests that some panoramic variables can help the clinician identify patients with potential ID.
全景X线片常用于正畸诊断和治疗计划制定。如果这些X线片还能提供有关颞下颌关节（TMJ）内部紊乱（ID）的信息，将很有帮助。
样本包括84名女性的168个髁突。她们在3台机器中的1台上进行全景X线摄影，并在1台上进行TMJ的双侧磁共振成像。通过双因素方差分析对6个全景变量进行分析，以评估髁突形态在TMJ ID状态和全景机器类型方面的差异。
无论使用何种全景机器类型，TMJ ID患者均出现髁突高度降低和髁突向远中倾斜。随着ID进展为不可复性盘移位，这种变化变得更加严重。
本研究表明，一些全景变量可帮助临床医生识别潜在ID患者。
