Karlsen A T
Angle Orthod. 1995;65(5):341-50. doi: 10.1043/0003-3219(1995)065<0341:CGDBLA>2.0.CO;2.
Craniofacial growth was followed longitudinally in two groups of boys with low and high MP-SN angles. The purpose was, first, to reveal group differences in dimensional change, and second, to find whether such differences were associated with a group difference in mandibular growth rotation. Group differences in dimensional change were explained by a difference in matrix rotation of the mandibular corpus, especially in the 6- to 12-year period. In the 12- to 15-year period, matrix rotation was similar in the two groups and so were dimensional changes. Morphologically, dimensional group differences in the 6- to 12-year period were theoretically compatible with the fact that mandibular rotation was clearly more forward in the low angle than in the high angle group. Statistically, dimensional variables with significant group difference were correlated strongly with matrix rotation and, in most cases, non-significantly with intramatrix rotation.
对两组具有低和高MP-SN角的男孩进行了颅面生长的纵向跟踪。目的一是揭示两组在尺寸变化上的差异，二是探究这种差异是否与下颌生长旋转的组间差异相关。两组在尺寸变化上的差异可通过下颌体基质旋转的差异来解释，尤其是在6至12岁期间。在12至15岁期间，两组的基质旋转相似，尺寸变化也相似。从形态学上看，6至12岁期间的尺寸组间差异理论上与低角组下颌旋转明显比高角组更向前这一事实相符。从统计学上看，具有显著组间差异的尺寸变量与基质旋转密切相关，且在大多数情况下与基质内旋转无显著相关性。
