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。
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。
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。
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。
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。
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。
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。
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。
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）。
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。
Objective: to study the relationship between apoptosis, proliferation and remodel of periodontal ligament after changes of occlusal force.
目的：探讨咬合力改变后牙周组织的重建与细胞凋亡、增殖的关系。
This article chooses different methods of representative scholars which used to study the modulus of elasticity about the periodontal ligament to review.
本文就近年来具有代表性的研究牙周膜弹性模量的各种方法作一综述。
Results: the active components extracted by alcohol strengthened the proliferation ability and ALP activity of cultured human periodontal ligament cells.
结果：补肾中药醇提活性成分对人牙周膜细胞增殖能力和ALP活性有增强作用。
But the lose of the activity of periodontal ligament cells and root replantation has influenced the successful rate of tooth replantation for a long time.
牙再植术的历史悠久，但是脱位牙根面部分牙周膜细胞活性丧失、牙根吸收，影响着牙再植术的成功率。
Results Satisfyactory results were obtained in our study, with 100% periodontal ligament healing, 93.6% vital dental pulp, 89.4% good contour of gingival.
结果采取适宜有效的治疗办法，均取得了满意的治疗效果，牙周膜愈合成功率达100%，活髓牙成功率达93.6%，牙龈形态良好者达89.4%。
Conclusion: It suggested SP-PLGA can promote the proliferation of human periodontal ligament fibroblasts through a long period of controlled release of SP.
结论：SP - PLGA纳米微球通过持续释放活性SP，可在较长时间内促进牙周膜成纤维细胞的增殖。
Methods: Healthy human gingiva and periodontal ligament were acquired from patients, then gingival fibroblasts and periodontal cells were cultured in vitro.
方法：采集健康的牙龈组织和牙周膜，体外培养牙龈成纤维细胞和牙周膜成纤维细胞。
Objective:To study the effects of vascular changes in periodontal ligament (PDL) of orthodontic tooth movement during the reconstruction of periodontal tissues(PDT).
目的：通过定性和定量的方法研究正畸牙齿移动牙周膜（PDL）血管变化的规律。
AIM: to examine the effect of endotoxin of prevotella intermedia and bacteroides fragilis on proliferation and ultrastructure of periodontal ligament cells in vitro.
目的：观察中间普氏菌和脆弱类杆菌的内毒素对人牙周膜细胞增殖和超微结构的影响。
In this study, we explored the potential of using autologous periodontal ligament stem cells (PDLSCs) to treat periodontal defects in a porcine model of periodontitis.
本研究中，我们尝试利用自体牙周膜干细胞治疗小猪牙周病模型上的牙周缺损。
Objective To investigate the buffer mechanism of periodontal ligament (PDL) 's vasculature by studying the microvascular architecture of PDL and its surrounding tissue.
目的通过研究牙周膜和周围组织微循环构筑的形态特征，探讨牙周膜微血管网的缓冲机制。
Human periodontal ligament cells were cultured on the elastic bottom plate and stimulated by elastic stress using mechanical loading system for cultured cells in vitro.
人牙周膜细胞在弹性膜上体外培养，采用体外培养细胞加载系统加载弹性牵张力。
Objective: To investigate the influence of simulated occlusion pressure on the cyclooxygenase-2 (COX-2) gene expression in human periodontal ligament fibroblasts (HPLFs).
目的：观察模拟咬合压力对人牙周膜成纤维细胞环氧化酶2 (COX 2)基因表达的影响。
Objective to isolate and cultivate human periodontal ligament stem cells (PDLSC) and to investigate the feasibility of PDLSC in vitro differentiation into chondrogenic phenotype.
目的从成体人牙周组织中分离培养牙周韧带干细胞，研究其分化为软骨细胞的可行性。
It is well know that the biological basis of Orthodontics is the plasticity of jaw, the strength-proof of cementum and the stability of periodontal ligament internal environment.
口腔正畸学的生物学基础在于颌骨的可塑性、牙骨质的抗压性及牙周膜内环境的稳定性。
Results: Under the increased bite force, periodontal ligament width was enlarged and new bone was formed in alveolar the expression of IL-6 increased apparently in periodontal cells.
结果：咬合力增强引起牙周膜增宽、牙槽骨新骨形成。 牙周细胞中IL-6表达较正常咬合力时明显增强。
Method: Periodontal ligament distraction osteogenesis technology was applied on the experimental side; traditional orthodontic tooth movement technology on the control side in 8 dogs.
目的：比较牙周膜牵张成骨快速牙移动和传统正畸牙移动的异同，探讨牙周膜牵张成骨快速牙移动的临床应用依据。
Objective: To evaluate the biocompatibility on guided tissue regeneration membranes combined with cultured human periodontal ligament fibroblasts (PDLFs) in periodontal tissue engineering.
目的：探讨牙周膜成纤维细胞与可吸收引导组织再生膜生物相容性，为牙周组织工程中支架材料选择提供依据。
Objective: To evaluate the biocompatibility on guided tissue regeneration membranes combined with cultured human periodontal ligament fibroblasts (PDLFs) in periodontal tissue engineering.
目的：探讨牙周膜成纤维细胞与可吸收引导组织再生膜生物相容性，为牙周组织工程中支架材料选择提供依据。
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