THE RELATIONSHIP BETWEEN MASTICATORY FUNCTION AND CRANIOFACIAL MORPHOLOGY .1. A CEPHALOMETRIC LONGITUDINAL ANALYSIS IN THE GROWING-RAT FED A SOFT DIET
THE RELATIONSHIP BETWEEN MASTICATORY FUNCTION AND CRANIOFACIAL MORPHOLOGY .1. A CEPHALOMETRIC LONGITUDINAL ANALYSIS IN THE GROWING-RAT FED A SOFT DIET
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DOI：
10.1093/ejo/7.4.273
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发表时间：
1985-01-01
影响因子：
2.6
通讯作者：
THILANDER, B
中科院分区：
文献类型：
--
作者：
KILIARIDIS, S;ENGSTROM, C;THILANDER, B
应用计算机头影测量方法，纵向研究了大鼠咀嚼肌功能对颅面生长模式的影响。为了诱导低功能活动，一组喂以软饮食，另一组喂以标准实验室饮食作为对照组。实验开始时(28日龄)大鼠处于生长后期，实验期为28d。分析表明，与标准硬质饮食的大鼠相比，软质饮食大鼠的内脏颅骨发生了更前移的生长旋转。因此，软食组的头骨形状变得越来越正颅形。尽管两组之间的颅骨大小没有差异，但软饮食组的内脏颅骨高度增加，这与改变的生长模式是一致的。软食组下颌骨的下颌角生长率也降低。这些发现表明，咀嚼肌功能不仅影响局部区域的骨重建，由于肌肉的直接作用，而且还影响整个颅面部的生长模式。
The influence of masticatory muscle function on the craniofacial growth pattern in the rat was studied longitudinally by means of a computerised cephalometric method. In order to induce a low functional activity, one group was fed a soft diet, while another group received a standard laboratory diet and served as a control group. The rats were in the late growing stage at the start of the experiment (28-days-old) and the experimental period was 28 days. The analysis showed that a more anteriorly directed growth rotation of the viscerocranium occurred in the rats fed the soft diet compared to the rats fed the standard hard diet. Thus, the skull became increasingly more orthocranial in shape in the soft diet group. Although no difference in overall skull size could be found between the two groups an increased viscerocranial height was found in the soft diet group, which is consistent with the altered growth pattern. A decreased growth rate was also found in the gonial angle of the mandible in the soft diet group. These findings indicate that the masticatory muscle function influences not only bone remodelling in local areas, due to direct muscle action, but also the general craniofacial growth pattern.