J Dent:牙科树脂单体对成骨细胞样细胞的体外细胞相容性研究

2017-07-21 MedSci MedSci原创

牙科树脂类材料广泛应用于现代口腔医学中。特别是树脂粘接剂更是享有广泛的流行趋势,并具有多种应用性。然而,树脂基质可以释放树脂单体,随后单体与周围组织相互作用会引起不良的生物学反应,在种植修复术中可能导致种植体周围的骨破坏。因此,这篇研究的目的是为了在体外检测树脂单体对成骨细胞样细胞的细胞毒性。

牙科树脂类材料广泛应用于现代口腔医学中。特别是树脂粘接剂更是享有广泛的流行趋势,并具有多种应用性。然而,树脂基质可以释放树脂单体,随后单体与周围组织相互作用会引起不良的生物学反应,在种植修复术中可能导致种植体周围的骨破坏。因此,这篇研究的目的是为了在体外检测树脂单体对成骨细胞样细胞的细胞毒性。

研究选用2个来源于肿瘤的永久性成骨细胞样细胞系(MG-63 and Saos-2)和1个永生人胚胎成骨细胞(hFOB 1.19),并施加不同浓度的树脂单体刺激:BisGMA, UDMA, TEGDMA和HEMA。通过3种不同的细胞毒性实验(alamarBlue, XTT和LDH assay)检测树脂单体对细胞活性的影响。实验数据用Mean ± SEM表示,并通过GraphPad Prism软件进行统计学分析。

结果显示,所有受检树脂单体在3种不同成骨细胞样细胞系中引起的细胞毒性反应均呈浓度依赖的趋势。尽管3种细胞活性检测均显示所有树脂单体引起的细胞毒性差异不大(BisGMA > UDMA > TEGDMA > HEMA),但是不同检测方法所得的绝对值却有较大差异。另外,单体对永生hFOB 1.19细胞的活性影响要明显高于2种骨肉瘤细胞系(MG-63, Saos-2),表明树脂单体对细胞活性的影响也存在细胞系依赖的趋势。

结论:洗脱实验中检测的单体浓聚物对成骨细胞样细胞存在毒性作用。尽管体外研究不能直接反应临床情况,但是结果表明,复合树脂粘接剂释放的单体可能会导致不良的生物学反应,进而引发利于种植体周围炎和骨破坏条件的产生。

临床意义:对于复合树脂粘接剂的广泛使用,特别是应用于种植修复治疗时,应彻底检查以避免可能发生在树脂单体和骨细胞之间的不良临床反应,以防诱发种植体周围炎和骨破坏的条件形成。

原始出处:

Kraus D, Wolfgarten M, et al. In-vitro cytocompatibility of dental resin monomers on osteoblast-like cells. J Dent. 2017 Jul 12. pii: S0300-5712(17)30175-6. doi: 10.1016/j.jdent.2017.07.008.

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    2017-07-23 zhaojie88
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    2017-07-23 xzw115
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    2017-07-23 chenshujs
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    2017-07-22 1e0e5697m83(暂无匿称)

    henhao

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    2017-07-22 184****9840

    学习了谢谢分享

    0

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