Chinese Journal of Tissue Engineering Research ›› 2014, Vol. 18 ›› Issue (18): 2789-2794.doi: 10.3969/j.issn.2095-4344.2014.18.001
He Tong-wen, Xu Geng-chi, Han Yao-hui, Mu Lan, Ge Zhen-lin
Received:
2014-03-27
Online:
2014-04-30
Published:
2014-04-30
Contact:
Ge Zhen-lin, Professor, Department of Orthodontics, School of Stomatology, Lanzhou University, Lanzhou 730000, Gansu Province, China
About author:
He Tong-wen, Studying for master’s degree, Department of Orthodontics, School of Stomatology, Lanzhou University, Lanzhou 730000, Gansu Province, China
Supported by:
the Scientific and Technological Support Project of Gansu Province, No. 1208RJZA209
CLC Number:
He Tong-wen, Xu Geng-chi, Han Yao-hui, Mu Lan, Ge Zhen-lin. Establishment of a rabbit model of parietal critical bone defects: a reference value for identifying parietal critical bone defects[J]. Chinese Journal of Tissue Engineering Research, 2014, 18(18): 2789-2794.
2.1 实验动物数量分析 10只兔建模后健康状况良好,无死亡及感染,均进入结果分析。 2.2 兔缺损区一般形态 建模后12周,兔颅顶骨4个缺损区均凹陷可见4个缺损均凹陷,表面均覆盖纤维组织,触诊时4 mm组质地较硬,但较周围正常组织稍软,而其他组明显质地较软(图1C,D)。 2.3 兔颅顶骨临界骨缺损模型建模缺损区影像学形态 建模后12周,锥型CT检测显示4,5,6,7 mm骨缺损直径均出现不同程度缩小,边界模糊。与建模后当日比较显示,兔缺损区均出现不同程度缩小,仅4 mm组接近完全修复(图2)。 2.4 兔颅顶骨临界骨缺损模型建模缺损区组织学变化 建模后12周,苏木精-伊红染色显示4 mm组缺损区出现排列不规则的骨小梁结构,并可见少量纤维组织嵌入其中,其他3组在骨缺损周边可见少量新生骨小梁存在,但缺损区完全被纤维组织充填(图3)。 利用软件Image-Pro Plus 6.0在相同放大倍数下测量缺损区同一视野新生骨小梁面积,结果显示,4 mm组相同放大倍数且同一视野下骨小梁面积高于其他3组(P < 0.001,表1)。"
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