Development of a Boron Nitride-Filled Dental Adhesive System.
Development of a Boron Nitride-Filled Dental Adhesive System.
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缺乏能够在修复材料和牙齿表面之间形成稳定粘合的粘合系统。为了解决这个问题，本研究确定了在聚合物牙科粘合剂系统中使用甲基丙烯酸酯功能化氮化硼纳米片 (BNNS) 的效果。双酚 A 缩水甘油基二甲基丙烯酸酯 (BisGMA):2 甲基丙烯酸羟乙酯 (HEMA) (60:40) 粘合剂单体混合物与光引发剂填充有 0 wt%（对照）、0.1 wt% 和 1 wt% BNNS 并光固化。采用傅里叶变换红外光谱测定单体双键的转化度(DoC)。测量吸水率和溶解度。评估弯曲强度和杨氏模量以确定复合粘合剂系统的机械性能。最后，通过微拉伸粘合测试对牙本质粘合强度退化和断裂模式进行量化，以确认所开发的粘合系统的粘合能力。结果表明，BNNS 的掺入增加了 DoC（0.1 和 1 wt% 分别为 9.8% 和 5.4%），但不影响吸水性（101.9–119.72 (μg/mm3)）、溶解度（2.62–5.54 (μg/mm3））、杨氏模量（529.1–1716.1 MPa）或微拉伸粘合强度（46.66–54.72 MPa）。为了更全面地确定 BNNS 对牙科粘合剂的影响，需要进一步研究 BNNS 负载百分比从 0.1 wt% 到 1 wt% 的变化。
There is a dearth of adhesive systems capable of forming stable bonds between restorative materials and tooth surfaces. To address the concern, this study determined the effects of using methacrylate-functionalized boron nitride nanosheets (BNNSs) in a polymeric dental adhesive system. The bisphenol A glycidyl dimethacrylate (BisGMA):2 hydroxyethyl methacrylate (HEMA) (60:40) adhesive monomer blend with a photoinitiator was filled with 0 wt% (control), 0.1 wt%, and 1 wt% BNNSs and light cured. Fourier transform infrared spectroscopy was performed to determine the conversion degree of monomer double bonds (DoC). Water absorption and solubility were measured. Flexural strength and Youngs’s modulus were evaluated to determine the mechanical properties of the composite adhesive system. Finally, dentin bond strength degradation and fracture mode were quantified with a microtensile bond test to confirm the bonding ability of the developed adhesive system. Results showed that the incorporation of BNNSs increased DoC (9.8% and 5.4% for 0.1 and 1 wt%, respectively), but it did not affect water sorption (101.9–119.72 (µg/mm3)), solubility (2.62–5.54 (µg/mm3)), Young’s modulus (529.1–1716.1 MPa), or microtensile bond strength (46.66–54.72 MPa). Further studies are needed with varying BNNS loading percentages from 0.1 wt% to 1 wt% in order to more comprehensively determine the effect of BNNSs on dental adhesives.
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影响因子：
14
作者：
Ito, S;Hashimoto, M;Pashley, DH
通讯作者：
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5
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5
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