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Effects of dentine phosphoprotein on remineralization of demineralized dentine
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- Author:
- No author available
- Journal Title:
- CHINESE JOURNAL OF STOMATOLOGY
- Issue:
- 2
- DOI:
- 10.3760/j.issn:1002-0098.2003.02.006
- Key Word:
- 磷蛋白类;牙再矿化;根龋
Abstract： 目的探讨牙本质磷蛋白(dentin phosphoprotein,DPP)与脱矿牙本质再矿化的关系.方法 (1)用氯化钠提取脱矿牙本质中的易溶性DPP并鉴定.(2)用氯化钠去除和未去除易溶性DPP的脱矿人牙根牙本质磨片,经再矿化后通过原子吸收光谱、扫描电镜和显微放射照相的观测比较两组再矿化程度.结果 (1)证明了1 mol/L氯化钠可以提取脱矿牙本质中的易溶性DPP;(2)去除和未去除易溶性DPP的磨片组相比再矿化液的钙离子浓度显著减少(P<0.01);磨片上生成较多量的矿物质沉积;显微射线照片平均吸光度值显著降低(P<0.01).结论易溶性DPP对脱矿牙本质再矿化有明显的抑制作用,在根面龋的再矿化中去除易溶性DPP能提高其再矿化的潜能.
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