Morimoto T, Inoue T, Nakamura T, Kawamura Y
J Dent Res. 1984 Nov;63(11):1310-4. doi: 10.1177/00220345840630111201.
Modulation of jaw movement patterns by alteration of the chewing rhythm was analyzed in nine subjects. Jaw movements were monitored by an electronic transducer system. The subjects were asked to chew gum either at voluntarily determined rates or at rates guided by a light flash that varied from 2 to 7 Hz at 1-Hz intervals. The results can be summarized as follows: Chewing was generally conducted at rates below 3 Hz when the rhythm was voluntarily determined. When the rhythm was guided, however, the maximum chewing rate could occasionally be raised up to 6 Hz; the duration of the chewing cycle was more closely related to changes in the duration of the opening and occlusion phases than to that of the closing phase; at chewing rates below 3 Hz, the maximum gape did not appreciably change with the chewing rhythm, while it decreased linearly at rates above 3 Hz; and at chewing rates below 3 Hz, the jaw opening velocity increased with speed of chewing, whereas it decreased or sometimes fluctuated over a wide range at rates above 3 Hz. It is concluded that, during normal mastication at rates below 3 Hz, chewing rhythm is altered by changing both the velocity of jaw opening and the duration of the occlusion phase.
在九名受试者中分析了通过改变咀嚼节奏对下颌运动模式的调节作用。下颌运动由电子传感器系统监测。受试者被要求以自主确定的速率咀嚼口香糖，或以由频率从2赫兹到7赫兹、间隔为1赫兹的闪光引导的速率咀嚼口香糖。结果可总结如下：当节奏由自主确定时，咀嚼通常以低于3赫兹的速率进行。然而，当节奏由闪光引导时，最大咀嚼速率偶尔可提高到6赫兹；咀嚼周期的持续时间与开口和咬合阶段持续时间的变化比与闭口阶段的变化更密切相关；在低于3赫兹的咀嚼速率下，最大开口度不会随着咀嚼节奏明显变化，而在高于3赫兹的速率下，它呈线性下降；在低于3赫兹的咀嚼速率下，下颌开口速度随着咀嚼速度增加，而在高于3赫兹的速率下，它会下降或有时在很宽的范围内波动。得出的结论是，在低于3赫兹的正常咀嚼过程中，咀嚼节奏通过改变下颌开口速度和咬合阶段的持续时间而改变。
