van Willigen J D, Broekhuijsen M L, van der Meer W J
Orofacial Research Group, University of Groningen, The Netherlands.
Arch Oral Biol. 1987;32(7):525-30. doi: 10.1016/s0003-9969(87)80015-8.
Whether bite-force is controlled independently of mouth opening, and jaw position is controlled independently of the imposed load of the mandible, was examined. Subjects were asked to match, at 15 and 30 mm inter-incisor distance, reference forces of 2, 10 and 50 N exerted at 15 and 30 mm mouth opening. They were able to grade bite-force, as matches made of the different forces hardly overlapped. However, at a 5 per cent level of significance in 90 per cent of the cases, the matches were dependent on jaw position. The imprecision of the 2 N matches was about 40 per cent of the reference force; those of the 10 and 50 N matches were about 25 per cent. Thus a mechanism controlling bite-force with any degree of precision is absent in the jaw system.
研究了咬合力是否独立于张口进行控制，以及下颌位置是否独立于下颌所承受的负荷进行控制。要求受试者在切牙间距为15毫米和30毫米时，匹配在张口15毫米和30毫米时施加的2牛、10牛和50牛的参考力。他们能够对咬合力进行分级，因为不同力的匹配几乎没有重叠。然而，在90%的情况下，在5%的显著性水平上，匹配取决于下颌位置。2牛匹配的不精确性约为参考力的40%；10牛和50牛匹配的不精确性约为25%。因此，下颌系统中不存在以任何精度控制咬合力的机制。
