Kuwahara T, Bessette R W, Maruyama T
Department of Fixed Prosthodontics, Osaka University Faculty of Dentistry, Japan.
Cranio. 1996 Jan;14(1):12-22. doi: 10.1080/08869634.1996.11745944.
In order to determine if there are characteristic chewing patterns for specific types of TMJ internal derangements, chewing was analyzed in 210 TMD patients with unilateral internal derangement (MDR early, 40; MDR late, 41; MD, 80; MDP, 49), and in 94 TMD patients without internal derangement, and 10 asymptomatic subjects with normal TMJ imaging. Each internal derangement subgroup demonstrated a significantly restricted envelope of motion and a reduced chewing velocity especially when they chewed on their normal TMJ side. Comparing different types of internal derangement, the MDR early group demonstrated relatively normal chewing, while the MDR late, MD and MDP groups showed severely impaired chewing movements. Among these three groups, the MD group demonstrated the most impairment, followed by the MDP and the MDR late groups. These results demonstrate that different types of internal derangement have specific impairments upon chewing, suggesting use of this analysis as a diagnostic tool.
为了确定特定类型的颞下颌关节内紊乱是否存在特征性咀嚼模式，对210例单侧内紊乱的颞下颌关节紊乱病（TMD）患者（早期可复性盘前移位，40例；晚期可复性盘前移位，41例；不可复性盘前移位，80例；盘穿孔，49例）、94例无内紊乱的TMD患者以及10例颞下颌关节影像学正常的无症状受试者的咀嚼情况进行了分析。每个内紊乱亚组均表现出明显受限的运动范围和降低的咀嚼速度，尤其是当他们用正常颞下颌关节侧咀嚼时。比较不同类型的内紊乱，早期可复性盘前移位组的咀嚼相对正常，而晚期可复性盘前移位组、不可复性盘前移位组和盘穿孔组的咀嚼运动严重受损。在这三组中，不可复性盘前移位组的损害最为严重，其次是盘穿孔组和晚期可复性盘前移位组。这些结果表明，不同类型的内紊乱对咀嚼有特定的损害，提示可将这种分析用作一种诊断工具。
