牙周膜的应力分布及大小具有时间依赖性。
The periodontal ligament has time-dependent mechanical behaviour.
结论牙周膜组织形态与受力密切相关，在生理条件下的咬合力对维持牙周膜的正常结构具有重要意义。
Conclusion the histological morphology is closely related to the mechanical condition. Physiological bite force is necessary for periodontal ligament to maintain its physiological structure.
双端固定桥设计优于单端固定桥，更好的分散了半切后保留牙根的牙周膜的负担，有利于半切术后余留牙根的牙周支持组织健康。
The design of rigid fixed bridge is superior to free-end fixed bridge and be propitious to the the health of the reserved root by dispersing the stress of reserved root more effectively.
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。
Methods: Healthy human gingiva and periodontal ligament were acquired from patients, then gingival fibroblasts and periodontal cells were cultured in vitro.
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。
Conclusion: It suggested SP-PLGA can promote the proliferation of human periodontal ligament fibroblasts through a long period of controlled release of SP.
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 investigate the influence of simulated occlusion pressure on the cyclooxygenase-2 (COX-2) gene expression in human periodontal ligament fibroblasts (HPLFs).
在相同垂直载荷和水平载荷情况下，分析固定桥基牙牙周膜厚度不同时牙周膜内的应力分布。
Stress distribution of periodontal membrane loaded with the same vertical and horizontal forces was analyzed during different thickness of periodontal membranes around abutments.
模拟失重对牙周膜和牙槽骨的影响较小，这可能与它们的血液供给丰富，有较强的代谢补偿能力有关。
Simulated weightlessness had little influence on periodontium and alveolar bone. This might due to their adequate blood supply and strong compensating potential.
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。
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.
目的：研究固定桥基牙牙周膜厚度不同时牙周膜内的应力分布，为临床工作提供理论依据。
AIM: to study the stress distribution of periodontal membrane of fixed abutment tooth with different thickness, and provide theoretical basis in clinic.
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。
Objective To investigate the buffer mechanism of periodontal ligament (PDL) 's vasculature by studying the microvascular architecture of PDL and its surrounding tissue.
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 stress in the periodontal ligament near apex increased more rapidly than that near the alveolar bone crest.
目的：研究固定桥基牙牙周膜厚度不同对双端固定桥应力分布的影响。
AIM: To study the stress distribution of rigid fixed bridge on the different thickness of periodontal membranes around abutments.
在相同垂直载荷和水平载荷情况下，分析基牙牙周膜厚度不同时固定桥的应力分布。
Stress distribution of fixed bridge loaded with the same vertical and horizontal forces was analyzed during different thickness of periodontal membranes around abutments.
它还可诱导牙周膜细胞的增殖和分化。
Furthermore, it can also stimulate proliferation and differentiation of periodontal ligament cell.
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。
Objective:To study the effects of vascular changes in periodontal ligament (PDL) of orthodontic tooth movement during the reconstruction of periodontal tissues(PDT).
通过考马斯亮蓝法测定牙周膜细胞总蛋白含量，透射电子显微镜观察细胞超微结构的变化。
Commasie brilliant blue staining was used to study the total protein content and transmission electron microscopy was used to study the ultrastructure of PDLCs.
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。
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：建立免疫磁珠法体外分离纯化人牙周膜干细胞的方法。
Objective: To isolate and identify the periodontal ligament stem cells from human molars.
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。
This article chooses different methods of representative scholars which used to study the modulus of elasticity about the periodontal ligament to review.
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%。
Results Satisfyactory results were obtained in our study, with 100% periodontal ligament healing, 93.6% vital dental pulp, 89.4% good contour of gingival.
牙周膜对牙周组织的维持和再生起着不可缺的作用。
It plays an integral role in the maintenance and regeneration of periodontal tissue.
考马斯亮蓝法测定人牙周膜细胞的总蛋白含量。
Then the total protein content was measured by using Coomassie brilliant blue staining.
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。
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.
目的：对多曲方丝弓技术中打开咬合所产生的力学系统进行有限元分析，了解多曲方丝弓打开咬合时下颌中切牙牙周膜应力分布情况。
Objective:The purpose of this article is to study the force system that produced by multi-loop edgewise arch wire while opening the bite.
结论：由于增龄的影响，老年人牙周膜细胞生长增殖功能明显降低。
Conclusions: Under the influence of ageing, proliferation ability of elderly peoples periodontal ligament cells was significantly decreased and was significantly different from that of young peoples.
目的采用有限元的方法研究舌侧矫治过程中上颌第一磨牙牙根、牙周膜、牙槽骨应力分布的特点。
Objective To observe the stress distribution of maxillary first molar and its periodontium in lingual orthodontics.
牙周组织再生重建的关键是牙周膜细胞的增殖分化。
The key of periodontal tissue regeneration is the proliferation and differentiation of human periodontal ligament fibroblasts (HPDLFs) .
拔除小型猪的牙齿取自体的牙周膜干细胞，体外培养扩增。
Autologous PDLSCs were obtained from extracted teeth of the miniature pigs and then expanded ex vivo to enrich PDLSC Numbers.
拔除小型猪的牙齿取自体的牙周膜干细胞，体外培养扩增。
Autologous PDLSCs were obtained from extracted teeth of the miniature pigs and then expanded ex vivo to enrich PDLSC Numbers.
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