Shear bond strength of resin cement on moist dentin and its relation to the flexural strength of resin cement
Shear bond strength of resin cement on moist dentin and its relation to the flexural strength of resin cement
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DOI：
10.4012/dmj.2021-278
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发表时间：
2022-06-01
影响因子：
2.5
通讯作者：
Matsumoto, Takuya
中科院分区：
文献类型：
--
作者：
Irie, Masao;Okada, Masahiro;Matsumoto, Takuya
我们试图比较树脂水门汀对潮湿牙本质和干燥牙本质的粘结强度，并确定树脂水门汀的粘结强度和弯曲强度之间的关系。使用红外光谱法估计湿的和干的牙本质的水含量。使用了四种粘合剂和三种自粘性树脂粘固剂。在立即、储存一天后和20，000次热循环（TC 20k）后的三个时间点，测量剪切粘结强度。对于所有的树脂水泥，剪切粘结强度和弯曲强度都是最低的设置后立即，然而，经过一天的水存储或TC 20 k，这些树脂水泥具有最高的值。无论牙本质表面的剪切粘结强度的条件，每种树脂水泥的弯曲强度与牙本质表面的剪切粘结强度相关。
We sought to compare the bond strength of resin cement on moist dentin to that on dry dentin, and determine the relationship between the bond strength and flexural strength of resin cement. The water content of the moist and dry dentins was estimated using infrared spectroscopy. Four adhesive and three self-adhesive resin cements were used. At three times of immediately, after one-day storage, and after 20,000 thermocycles (TC 20k), the shear bond strengths were measured. For all resin cements, both the shear bond strength and the flexural strength were the lowest immediately after setting; however, after one day of water storage or TC 20k, these resin cements had the highest values. Regardless of the condition of the dentin surface upon shear bond strength, the flexural strength of each resin cement was correlated with the shear bond strength of the dentin surface.