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外源性TGF-β_1在体内诱导修复性牙本质形成的作用 被引量:5

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摘要 目的 :探讨 TGF- β1 作为牙髓暴露点的外敷药物和牙髓中的植入体诱导修复性牙本质形成的能力。方法 :狗磨牙和尖牙机械开髓 ,将含 TGF- β1 的药物植入暴露点内并覆盖露髓处 ,术后 4、8、12周处死动物 ,制备标本 ,组织学观察。结果 :术后 4周 ,在 TGF- β1 - HA的表面看到成牙本质样细胞和其他形成细胞相连的新的牙本质样基质的沉积 ,而对照的 HA表面未见形成细胞和基质沉积现象。术后 8、12周 ,TGF- β1 - HA颗粒周围有厚层的牙本质样基质及与其相连的高柱状成牙本质样细胞 ,邻近的周围及洞口部位也看到修复性牙本质明显沉积和牙本质桥形成。结论 :外源性 TGF- β1 在体内可诱导成牙本质细胞分化和修复性牙本质的形成。
出处 《实用口腔医学杂志》 CAS CSCD 北大核心 2000年第6期426-429,共4页 Journal of Practical Stomatology
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