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1·The periodontal ligament has time-dependent mechanical behaviour.

牙周膜的应力分布及大小具有时间依赖性。

2·Phenotype differentiation and surface marker of periodontal ligament cell.

牙周韧带细胞的表型分化及其表面标记物。

3·Objective: To isolate and identify the periodontal ligament stem cells from human molars.

目的：建立免疫磁珠法体外分离纯化人牙周膜干细胞的方法。

4·Some level of residual stresses in periodontal ligament was left after one mastication period.

一个咀嚼周期结束后，牙周膜有残余应力存在。

5·Furthermore, it can also stimulate proliferation and differentiation of periodontal ligament cell.

它还可诱导牙周膜细胞的增殖和分化。

6·The stress in the periodontal ligament near apex increased more rapidly than that near the alveolar bone crest.

在不同的牙槽骨高度时，牙槽嵴顶部的牙周膜是应力集中的部位。

7·The periodontal ligament is a connective tissue located between the cementum of teeth and the alveolar bone of the mandibula.

牙周膜是位于牙骨质和下颌骨的齿槽骨之间的结缔组织。

8·The results show that the experimental group in the tension side of periodontal ligament BMP-2 was higher than the pressure side.

本实验结果表明，实验组张力侧牙周组织中BMP - 2的表达高于压力侧。

9·The new volumes of alveolar bone, cementum and periodontal ligament in the UT group were more than those in the C group (P< 0.05).

超声组牙槽骨、牙骨质、牙周膜新生量均大于对照组（P< 0.05）。

10·The key of periodontal tissue regeneration is the proliferation and differentiation of human periodontal ligament fibroblasts (HPDLFs) .

牙周组织再生重建的关键是牙周膜细胞的增殖分化。