Department of Conservative Dentistry, School of Dentistry, KyungHee University, Seoul, Korea.
J Dent Res. 2010 May;89(5):482-7. doi: 10.1177/0022034510363665. Epub 2010 Mar 3.
Continuous etching of aggressive all-in-one adhesives occurs in wet dentin tubules after polymerization of the adhesives. This study challenged the hypothesis that unpolymerized acidic monomers from an aggressive all-in-one self-etching adhesive continue to etch beyond dentin hybrid layers. Dentin surfaces bonded with Adper Prompt L-Pop were sectioned into 0.3-mm-thick slabs. Some of the slabs were stored in water (pH 6.8) or glycine buffer (pH 11.1) for six weeks and then examined by CLSM, SEM, and TEM. The rest were immersed in a biomimetic remineralizing medium for up to 4 months. Morphologic analysis indicated no difference in demineralization thickness between the two 6-week storage groups. However, increased permeability and loss of integrity occurred along the base of the hybrid layers in the glycine buffer group, but not in the water storage group. These findings were also confirmed by the results of biomimetic remineralization along the bases of those hybrid layers.
在黏合剂聚合后，腐蚀性的一步法自酸蚀黏合剂会持续在湿润的牙本质小管中进行侵蚀。本研究旨在验证关于腐蚀性的一步法自酸蚀黏合剂中的未聚合酸性单体是否会在牙本质混合层之外继续侵蚀的假设。用 Adper Prompt L-Pop 黏结的牙本质表面被切割成 0.3 毫米厚的薄片。其中一些薄片在水中（pH6.8）或甘氨酸缓冲液（pH11.1）中储存 6 周，然后通过 CLSM、SEM 和 TEM 进行检查。其余的薄片则被浸泡在仿生再矿化介质中长达 4 个月。形态分析表明，在这两组 6 周的储存中，脱矿厚度没有差异。然而，在甘氨酸缓冲液组中，混合层底部的通透性增加且完整性丧失，而在水储存组中则没有出现这种情况。这些发现也通过在这些混合层底部进行仿生再矿化的结果得到了证实。
