Pulpal pressure and bond strengths of SuperBond and Gluma.
Pulpal pressure and bond strengths of SuperBond and Gluma.
复制标题
SuperBond 和 Gluma 的牙髓压力和粘合强度。
DOI：
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发表时间：
1991
影响因子：
1.4
通讯作者：
D. Pashley
中科院分区：
文献类型：
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作者：
L. Tao;J. Tagami;D. Pashley
利用拔除的未萌出的人牙，评估了在模拟牙髓压力下储存对Superond和Gluma剪切粘结强度的影响。在牙髓压力存在或不存在的情况下，也评估了牙本质的垂直位置(即浅的和深的)和水平的(中心和牙髓的角)的位置的影响。32 cm水压对超级粘结剂C&B的24小时剪切粘结强度无明显影响，浅层牙本质与深层牙本质、中心牙本质与髓角牙本质直接粘接的粘结强度无显著差异。超键的键合强度为16.3~19.1 Mpa。虽然牙本质位置对Gluma粘结强度没有影响，但在牙髓压力存在的情况下，粘结强度下降到牙本质深处，尤其是牙髓角上。该检测方法在筛选新的牙本质粘结系统中具有一定的应用价值。
The effects of storage under a simulated pulpal pressure on the shear bond strength of SuperBond and Gluma were evaluated using extracted, unerupted human teeth. Also evaluated was the effect of dentin position both vertically (i.e., superficial versus deep) and horizontally (center versus pulp horns) in the presence or absence of a pulpal pressure. Thirty-two cm of H2O pressure had no effect on the 24 hour shear bond strength of SuperBond C & B. There was also no significant difference in the bond strength of SuperBond to superficial versus deep dentin or central dentin versus dentin directly over pulp horns. The bond strengths of SuperBond ranged from 16.3-19.1 MPa. Gluma bonds were less than half as strong as those obtained with SuperBond C & B. Although there was no effect of dentin position on Gluma bond strength, in the presence of a pulpal pressure, the strength of the bonds fell in deep dentin especially over pulp horns. This testing protocol may prove of value in screening new dentin bonding systems.