Furthermore, it can also stimulate proliferation and differentiation of periodontal ligament cell.
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2. 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.
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3. 一个咀嚼周期结束时，牙周膜有残余应力存在。
There is some level of residual stress left after one mastication period.
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4. 一个咀嚼周期结束后，牙周膜有残余应力存在。
Some level of residual stresses in periodontal ligament was left after one mastication period.
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5. 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.
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6. 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.
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7. 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) .
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8. 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 periodontal ligament is a connective tissue located between the cementum of teeth and the alveolar bone of the mandibula.
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9. 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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10. 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.
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11. 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.
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12. 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.
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13. 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.
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14. 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.
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15. 组织学观察：正常鼠根尖周牙周膜组织结构完整，根尖周牙槽骨正常无吸收。
Histology observation: All of the periapical tissues for control group were free of inflammation and bone destruction.
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16. 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.
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17. 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。
Results: the active components extracted by alcohol strengthened the proliferation ability and ALP activity of cultured human periodontal ligament cells.
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18. 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。
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.
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19. 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.
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20. 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).
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21. 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.
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22. 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.
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23. 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.
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24. 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.
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25. 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.
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26. 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.
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27. 然后在各模型上进行模拟加载，分析倾斜移动和整体移动时各模型牙周膜初应力的分布情况。
Then, load to these already established models to analyze the initial stress of PDL in these models when tipping and bodily movement respectively.
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28. 该结构缺乏牙周膜组织，故应通过咬合设计控制种植义齿咬合力大小及方向对种植体加以保护。
Without the protection of periodontal membrane, we should pay more attention to the occlusion design, controlling the value and direction of occlusal force exerted on DE.
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29. 该结构缺乏牙周膜组织，故应通过咬合设计控制种植义齿咬合力大小及方向对种植体加以保护。
Without the protection of periodontal membrane, we should pay more attention to the occlusion design, controlling the value and direction of occlusal force exerted on DE.
