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Photopolymerization of phosphoric acid ester-based self-etch dental adhesives

机译:基于磷酸酯的自蚀刻牙科粘合剂的光聚合

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摘要

The objective of the study was to gain more understanding on the photopolymerization mechanism and the role of individual monomers in the polymerization behavior of a PAE-based self-etch adhesive system with the presence of HAp and water. The photo-polymerization process of the model adhesive system (2MP / HEMA) was monitored by using real-time attenuated total reflectance Fourier transform infrared (ATR/FT-IR) technique. The effect of monomer ratio, HAp incorporation, and water content were investigated. The degree of conversion (DC) and the polymerization rate (PR) of the adhesives were determined to evaluate the polymerization efficacy. The results showed that the DC and PR increased consistently as the 2MP content increased from 30% to 70%, while they declined drastically as the 2MP content was further elevated to 100%. The incorporation of HAp considerably increased the DC and PR; however, the increase in water content was found to have negative influence on the photopolymerization.
机译:该研究的目的是获得更多关于光聚合机理以及单个单体在具有HAp和水的情况下基于PAE的自蚀刻胶粘剂体系的聚合行为中的作用的了解。通过使用实时衰减全反射傅里叶变换红外(ATR / FT-IR)技术监控模型粘合剂体系(2MP / HEMA)的光聚合过程。研究了单体比,HAp掺入和水含量的影响。确定粘合剂的转化度(DC)和聚合速率(PR)以评估聚合效力。结果表明,随着2MP含量从30%增加到70%,DC和PR持续增加,而随着2MP含量进一步增加到100%,它们急剧下降。 HAp的加入大大增加了DC和PR。然而,发现水含量的增加对光聚合具有负面影响。

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