[Correlation between morphologies of mandibular vertical sections and linear measurements of the skull].
[Correlation between morphologies of mandibular vertical sections and linear measurements of the skull].
复制标题
下颌垂直断面形态与颅骨线性测量的相关性[J].
DOI：
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发表时间：
1990
期刊：
影响因子：
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通讯作者：
E. Kanazawa
中科院分区：
文献类型：
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作者：
K. Kasai;Y. Nakajima;M. Mashita;K. Yasuda;Y. Enomoto;K. Go;T. Iwasawa;E. Kanazawa
本研究的目的是评估下颌骨的断层形态与颅面形态之间的关系。在联合处（SY）和第二磨牙区（M2R）做垂直切片。材料为干燥的人头骨，在三维坐标系下测量。对男性和女性进行了24项测量的相关矩阵检测。并对低角组和高角组的测量结果进行了比较。实验结果如下：1。角与支高、支宽、支宽、第二磨牙宽度呈负相关。SY形态与面部高度和下颌骨大小有关。另一方面，M2R形态与分支的高度、宽度和宽度有关。2. 低角组与高角组的牙槽角测量差异如下：1)低角组第二磨牙牙槽高度、牙槽宽度、双髁宽度、第二磨牙牙槽宽度均显著大于高角组。2)高角度组和低角度组的SY测量值无显著差异。3)低角度组M2R高度和面积均显著大于高角度组。本研究表明，SY形态可能与面部垂直因素（面部高度）、下颌骨大小和咬合类型有关。另一方面，M2R形态较SY更接近咬肌和翼状内侧肌的附着，与支的形态和角有关。
The purpose of this study is to evaluate the relationships between the sectional forms of the mandible and the craniofacial morphology. Vertical sections were made at the symphysis (SY) and at the second molar region (M2R). Materials were dried human skulls which were measured in three dimensional co-ordinate system. The correlation matrix of 24 measurements was examined in the male and the female. The difference of these measurements between the low angle group and the high angle group of gonial angle was also examined. Results obtained were as follows: 1. Gonial angle was negatively correlated with the height, width, breadth of ramus and the breadth of second molars. SY form was related to the facial height and size of the mandible. On the other hand, M2R form was related to the height, width and breadth of ramus. 2. The differences of measurements between the low angle group and the high angle group of gonial angle were as follows: 1) The ramal height, ramal width, bicondylar width and breadth of second molars in the low angle group were significantly larger than those in the high angle group. 2) The measurements of SY in the high angle group and the low angle group showed no significant difference. 3) The height and area of M2R in the low angle group were significantly larger than those in the high angle group. This study demonstrated that SY form might relate to vertical factors of the face (facial height), the size of mandible and the types of occlusions. On the other hand, M2R form being nearer to the attachment of masseter and medial pterygoid muscles than SY was related to the form of ramus and the gonial angle.