Raustia A M, Pyhtinen J, Virtanen K K
Rofo. 1986 Mar;144(3):327-31. doi: 10.1055/s-2008-1048796.
Computed tomography (CT) has a good resolution capacity and is an excellent method for measuring tissue densities. The aim here was to compare the densities and sizes of the main masticatory muscles, the masseter, medial pterygoid and lateral pterygoid muscles, as obtained with CT, with clinical findings in patients with TMJ dysfunction (25) and controls (29). The densities of the masseter muscles and the medial pterygoid muscles showed no statistical difference between the patients and controls, while the lateral pterygoid muscles of the patients had densities that were only almost significantly higher than those of the controls. The masseter muscles on the patients who more often had signs of bruxism in their dentition were statistically significantly thicker than in the controls, but the widths of the medial pterygoid muscles gave no statistical difference between the groups. The results seem to indicate that in addition to the bone density changes associated with functional disorders of the masticatory system, there may be also density and size changes in the masticatory muscles which are detectable by CT.
计算机断层扫描（CT）具有良好的分辨率，是测量组织密度的优秀方法。本研究旨在比较通过CT获得的主要咀嚼肌（咬肌、翼内肌和翼外肌）的密度和大小，以及颞下颌关节紊乱患者（25例）和对照组（29例）的临床检查结果。患者和对照组的咬肌及翼内肌密度无统计学差异，而患者的翼外肌密度仅略高于对照组且具有统计学意义。牙列中磨牙症迹象更频繁的患者的咬肌在统计学上显著厚于对照组，但翼内肌的宽度在两组之间无统计学差异。结果似乎表明，除了与咀嚼系统功能障碍相关的骨密度变化外，咀嚼肌的密度和大小变化也可通过CT检测到。
