Relationship between the physiological cross-section of the human jaw muscles and their cross-sectional area in computer tomograms.
Relationship between the physiological cross-section of the human jaw muscles and their cross-sectional area in computer tomograms.
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DOI：
10.1159/000145832
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发表时间：
1984
期刊：
影响因子：
--
通讯作者：
W. Weijs;B. Hillen
中科院分区：
文献类型：
--
作者：
W. Weijs;B. Hillen
生理横截面（PCS）和横截面积的计算机断层扫描在直角的平均纤维方向进行了比较，在咬肌，颞肌和翼肌的6具尸体。PCS被确定为（1）梳理纤维束的总横截面（2）总纤维重量除以平均纤维长度。这两个指标密切相关，但第一个指标总是比第二个指标低25%，与肌肉有关。断层图像（SCS）中的横截面小于PCS，翼外肌除外。在所有肌肉中，SCS和PCS之间存在统计学显著相关性。SCS可用于预测PCS，误差为0.3-1.0 cm 2。在我们的材料中，横截面比文献中报道的高约20%。据认为，这种差异是由自然牙齿的损失造成的。
Physiological cross-section (PCS) and cross-sectional area in computer tomograms made at right angles to the mean fibre direction were compared in the masseter, temporalis and pterygoid muscles of six human cadavers. PCS was determined as (1) total cross-section of teased fibre bundles (2) total fibre weight divided by mean fibre length. The two measures correlated strongly, but the first was always 25% lower than the second, irrespective of the muscle concerned. The cross-sections in the tomograms (SCS) were smaller than the PCS, except in the lateral pterygoid. In all muscles, a statistically significant correlation was found between SCS and PCS. The SCS can be used to predict PCS, with an error of 0.3-1.0 cm2. In our material, cross-sections were about 20% higher than reported in the literature. It is suggested, that this discrepancy is caused by the loss of natural teeth.