Dentine sealing provided by smear layer/smear plugs vs. adhesive resins/resin tags
Dentine sealing provided by smear layer/smear plugs vs. adhesive resins/resin tags
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DOI：
10.1111/j.1600-0722.2007.00465.x
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发表时间：
2007-08-01
影响因子：
1.9
通讯作者：
Pashley, David H.
中科院分区：
文献类型：
--
作者：
Carrilho, Marcela R.;Tay, Franklin R.;Pashley, David H.
本研究的目的是评估五种实验树脂（从疏水性到亲水性混合物）密封用水或乙醇饱和的酸蚀牙本质的能力。实验树脂（R1、R2、R3、R4 和 R5）作为纯粘合剂（100% 树脂）或作为无水乙醇溶剂化溶液（70% 树脂/30% 乙醇）进行评估。在健全的牙本质表面以下情况后，在 20 cm H2O 静水压下测量流体电导： (i) 覆盖有涂抹层； (ii) 酸蚀；或（iii）与纯树脂或溶剂化树脂粘合，将其应用于用水或乙醇饱和的酸蚀牙本质。一般来说，树脂粘合牙本质的流体电导率明显高于涂抹层覆盖的牙本质。然而，当将疏水性最强的纯树脂（R1 和 R2）应用于乙醇饱和的酸蚀牙本质时，流体电导率与涂抹层产生的流体电导率一样低。除树脂 R4 外，用乙醇饱和的树脂粘合牙本质的流体电导率显着低于与水饱和的牙本质粘合的树脂。如果基材被乙醇而不是水饱和，则应用更疏水的树脂可以更好地密封酸蚀的牙本质。
The aim of this study was to evaluate the ability of five experimental resins, which ranged from hydrophobic to hydrophilic blends, to seal acid-etched dentine saturated with water or ethanol. The experimental resins (R1, R2, R3, R4, and R5) were evaluated as neat bonding agents (100% resin) or as solutions solvated with absolute ethanol (70% resin/30% ethanol). Fluid conductance was measured at 20 cm H2O hydrostatic pressure after sound dentine surfaces were: (i) covered with a smear layer; (ii) acid-etched; or (iii) bonded with neat or solvated resins, which were applied to acid-etched dentine saturated with water or ethanol. In general, the fluid conductance of resin-bonded dentine was significantly higher than that of smear layer-covered dentine. However, when the most hydrophobic neat resins (R1 and R2) were applied to acid-etched dentine saturated with ethanol, the fluid conductance was as low as that produced by smear layers. The fluid conductance of resin-bonded dentine saturated with ethanol was significantly lower than for resin bonded to water-saturated dentine, except for resin R4. Application of more hydrophobic resins may provide better sealing of acid-etched dentine if the substrate is saturated with ethanol instead of with water.