Effects of sample hardness on human chewing force: a model study using silicone rubber
Effects of sample hardness on human chewing force: a model study using silicone rubber
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DOI：
10.1016/j.archoralbio.2004.04.006
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发表时间：
2004-10-01
影响因子：
3
通讯作者：
Karita, K
中科院分区：
文献类型：
--
作者：
Kohyama, K;Hatakeyama, E;Karita, K
本研究旨在阐明样品硬度对人体咀嚼力的影响。选择硅橡胶作为食物模型，对三个硬度不同的硅橡胶试件在上下门牙或磨牙之间进行自然咀嚼。使用多点薄片传感器动态测量咀嚼力、试件与牙齿之间的接触面积和施加在试件上的压力。多点测量表明，硬度越高的试件产生的峰值压力越大，持续时间越长，冲量越大，主动压力值越高，而咀嚼周期和达到峰值的时间不受试件硬度的影响。在前牙咀嚼过程中，较硬的试件与牙齿之间的接触面积减小。磨牙咬合的峰值力量和与力量相关的参数、接触面积、达到峰值的时间和咬合力持续时间均高于门牙咬合，而两种情况下的咀嚼周期相似。利用薄片传感器系统进行的测量清楚地表明，样品的硬度改善了人体的咀嚼力。我们假设样本硬度的影响主要是通过牙周膜中的机械感受器来调节的。(C)2004爱思唯尔有限公司。保留所有权利。
This study aims to clarify the effects of sample hardness on chewing force of humans. Silicone rubber was chosen as a food model., and three silicone rubber samples of varying hardness were chewed between the upper and lower incisors or molars in a natural way. Chewing force, contact area between a specimen and teeth, and pressure applied into the specimen were dynamically measured with a multiple-point sheet sensor. The multiple-point measurement revealed that a harder sample evoked higher peak force, longer duration, higher impulse, and higher active pressure values, whereas the chewing cycle and time to peak were not affected by sample hardness. The contact area between the sample and teeth decreased for the harder sample during incisor chewing. The peak force and force-related parameters, contact area, time to peak and bite force duration showed higher values for molar bites than for incisor bites, while the chewing cycle was similar in both cases. The measurement with the sheet sensor system clearly indicated that sample hardness modified chewing force of humans. We hypothesise that the effect of sample hardness is mainly mediated by mechanoreceptors in the periodontal ligament. (C) 2004 Elsevier Ltd. All rights reserved.