目的 探索不同浓度苯妥英钠(PHT)对大鼠牙周膜干细胞(rat periodontal ligament stem cells, rPDLSCs)粘附于牙根面的影响,为PHT应用于牙周重建提供一定的实验依据,为牙周炎的治疗提供了新思路。方法 提取大鼠rPDLSCs,培养并纯化。通过多项诱导分化、表面标记物鉴定后,使细胞在不同浓度PHT刺激条件下,与牙骨质片共同培养,检测粘附于牙骨质片上的细胞量并作比较。结果 20～80 mg/L 浓度范围内的PHT能够促进rPDLSCs的粘附数量,40 mg/L PHT组促进粘附的效果最强。实验组与对照组有显著统计学差异。结论 适合浓度的PHT可以促进rPDLSCs粘附于牙骨质表面,40 mg/L PHT组促进粘附的效果最强。

Objective To investigate the effects of PHT on attachment of rat periodontal ligament stem cells (rPDLSCs) to cementum chips, in order to provide a certain experimental basis for periodontal regeneration and new ideas for therapy of periodontitis. Methods To isolate rPDLSCs from SD rats, culture and purify them. To identify the cells by their apperance, induced multi-direction differentiation potential and cell surface markers. The rPDLSCs were cultured with cementum chips under the action of different concentrations of PHT. Then testing and comparing the amount of cells attached on the cementum chips in different groups. Results The concentraion among 20～80 mg/L of PHT can increase the number of attached cells. 40 mg/L PHT can promote the cells attachment mostly. Conclusion A proper concentration of PHT may promote rPDLSCs to attach to cementum chips′ surface, 40 mg/L PHT may promote the cell attachment mostly.