Permeability of dentin to adhesive agents.
Permeability of dentin to adhesive agents.
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DOI：
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发表时间：
1993
影响因子：
1.9
通讯作者：
D. Pashley;B. Ciucchi;H. Sano;J. Horner
中科院分区：
文献类型：
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作者：
D. Pashley;B. Ciucchi;H. Sano;J. Horner
牙本质对粘接剂的渗透性是获得良好牙本质粘接的关键。在那些去除涂抹层的系统中，树脂有机会渗入小管和管间牙本质。树脂渗透到小管中，可以有效地密封小管，如果树脂与管壁结合，可以提高粘接强度。树脂渗透到管间牙本质只能发生，如果牙本质的矿物相被酸性调理剂或螯合剂去除。这在破裂的牙本质中比在涂抹层覆盖的牙本质中更容易完成，因为在涂抹层的酸蚀刻后，残留的胶原碎片仍留在表面。树脂渗透的通道是酸除去磷灰石矿物后，牙本质胶原纤维周围形成的纤维周围空隙。粘合树脂在1到2分钟内通过这些狭窄、曲折、长通道的扩散带来了许多需要进一步研究的挑战。
The permeability of dentin to adhesive agents is of crucial importance in obtaining good dentinal bonding. In those systems that remove the smear layer, the opportunity exists for resin to infiltrate both tubules and intertubular dentin. Resin penetration into tubules can effectively seal the tubules and can contribute to bond strength if the resin bonds to the tubule wall. Resin infiltration into intertubular dentin can only occur if the mineral phase of dentin is removed by acidic conditioners or chelators. This is more easily accomplished in fractured dentin than in smear layer-covered dentin because of the residual collagen debris that remains on the surface following acid etching of smear layers. The channels for resin infiltration are the perifibrillar spaces created around the collagen fibers of dentin following removal of apatite mineral by acids. The diffusion of adhesive resins through these narrow, tortuous, long channels in 1 to 2 minutes offers a number of challenges that require further research.