[混合牙列期骨性III类错颌不同垂直面型的髁突形态]
[Condylar morphology with different vertical facial types of skeletal III malocclusions in mixed dentition].
作者信息
Wang Huan, Ding Yin
机构信息
Dept. of Orthodontics, College of Stomatology, The Fourth Military Medical University, Xi'an 710032, China.
出版信息
Hua Xi Kou Qiang Yi Xue Za Zhi. 2006 Dec;24(6):520-2.
OBJECTIVE
To study the difference of condylar morphology with different vertical facial types of skeletal III malocclusions in mixed dentition.
METHODS
Orthopantomograms of 60 children with different vertical facial types were retrospectively investigated by computerized cephalometric analysis. Condylar morphology was compared among different vertical facial type groups.
RESULTS
There was statistical difference in upper condylar height among groups, the height increased from high angle group, average angle group to low angle group. There was no significant difference in ramus height in the groups. There was statistical difference in the upper condylar height to the ramus height radio in different vertical facial type groups (P < 0.01). The ratio increased from high angle group, average angle group to low angle group. There was no significant difference in the condylar height to the condylar neck width ratio in the groups.
CONCLUSION
In children of skeletal III malocclusions in mixed dentition with different vertical facial types, there are statistical differences in condylar morphology, which might be due to different growth of mandibular.
目的
研究混合牙列期骨性Ⅲ类错牙合不同垂直面型髁突形态的差异。
方法
回顾性分析60例不同垂直面型儿童的全景片，采用计算机头影测量分析，比较不同垂直面型组的髁突形态。
结果
组间髁突上部高度有统计学差异，高度从高角组、均角组到低角组逐渐增加。组间升支高度无显著差异。不同垂直面型组髁突上部高度与升支高度比值有统计学差异（P < 0.01），该比值从高角组、均角组到低角组逐渐增加。组间髁突高度与髁突颈部宽度比值无显著差异。
结论
混合牙列期不同垂直面型的骨性Ⅲ类错牙合儿童，髁突形态存在统计学差异，可能与下颌生长不同有关。
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