INTRAARTICULAR PRESSURE RESPONSE OF TMJ DURING MANDIBULAR AND MASTICATORY MOVEMENTS

在下颌运动和咀嚼运动过程中，测量了颞下颌关节上方的关节内压力，结果表明，颞下颌关节具有泵送功能。因此，这一功能在血管系统和关节软骨之间的营养交换中起着重要作用。然而，在颞下颌关节紊乱(关节盘前移位而没有复位)的状态下，被认为是颞下颌关节缓冲结构中最大的关节盘的压力缓冲能力降低，从而导致关节内压力的增加。咀嚼时关节内压力增加，当他们咀嚼有弹性的硬质食物(Kamaboko)时，通常比硬质(Okaki)和软质(大米)食物更高。

Intraarticular pressure within the superior aspect of the temporomandibular joint was examined during mandibular and masticatory movements It was revealed that the temporomandibular joint had the pumping function. Thus, this function plays an important role in the nutritional exchange between the vascular system and the articular cartilage. In a state of temporomandibular disorders (anterior disc displacement without reduction), however, the pressure buffering ability of the articular disk, which is considered to be the greatest among buffer structures of the temporomandibular joint, is reduced with a consequent increase in intraarticular pressure. Intraarticular pressures increased upon mastication and generally were higher when they were chewing elastic-hard food (kamaboko) than hard (okaki) and soft (rice) food.