Influence of oxygen inhibition on the surface free energy and enamel bond strength of self-etch adhesives
Influence of oxygen inhibition on the surface free energy and enamel bond strength of self-etch adhesives
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DOI：
10.4012/dmj.2011-162
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发表时间：
2012-01-01
影响因子：
2.5
通讯作者：
Miyazaki, Masashi
中科院分区：
文献类型：
--
作者：
Oyama, Koji;Tsujimoto, Akimasa;Miyazaki, Masashi
我们比较了有和没有阻氧层的单步自酸蚀粘结剂的表面自由能和牙釉质结合强度。将粘结剂涂在牛门牙釉质表面，光照射，用乙醇保留或去除抑氧层。通过测量三种试验液体在固化胶粘剂上的接触角，确定了胶粘剂的表面自由能及其组成(ys(Lw)、ys(+)和ys(-))。测量了有无阻氧层试件的牙釉质粘结强度。对于所有表面，估计的表面张力分量ys(LW)的值相对恒定。当去除阻氧层时，Ys(+)组分的值略有增加，而Ys(-)组分的值显著下降。自酸蚀粘接剂的牙釉质粘结强度在不含氧抑制层的试件中显著降低。因此，阻氧层似乎促进了更高的牙釉质粘结强度。
We compared the surface free energies and enamel bond strengths of single-step self-etch adhesives with and without an oxygen-inhibited layer. The adhesives were applied to the enamel surfaces of bovine incisors, light irradiated, and the oxygen-inhibited layer was either retained or removed with ethanol. The surface free energies and their components (ys(LW), ys(+), and ys(-)) were determined by measuring the contact angles of three test liquids placed on the cured adhesives. The enamel bond strengths of specimens with and without the oxygen-inhibited layer were measured. For all surfaces, the value of the estimated surface tension component ys(LW) was relatively constant. The value of the ys(+) component increased slightly when the oxygen-inhibited layer was removed, whereas that of the Ys(-) component decreased significantly. The enamel bond strengths of the self-etch adhesives were significantly lower in the specimens without an oxygen-inhibited layer. The oxygen-inhibited layer therefore appeared to promote higher enamel bond strength.