Bis-GMA树脂基材料40秒光照条件的聚合度分析

摘要/Abstract

摘要： 目的探讨两类光固化树脂基材料在40 s光照下的聚合情况。方法采用傅立叶转换红外光谱分析法探讨（Fourier transform infrared spectroscopy, FTIR）两种光固化复合树脂Filtek Z100、Filtek Z350及一种光固化树脂水门汀Relyx Veneer、一种双固化树脂水门汀Nexus 3 (NX3)光照40 s并放置24 h及两周后聚合度的变化。结果红外光谱结果发现40 s光照后两类树脂基材料双键转化度仅达到50%左右，随着放置时间增加树脂聚合度会有所提高；放置相同时间时，复合树脂中Z350聚合度高于Z100，树脂水门汀中光固化材料Relyx Veneer聚合度高于双固化树脂水门汀NX3。结论 40 s光照时间不足以使树脂基材料达到完全聚合的效果。

关键词: 树脂, 聚合度, 红外光谱

Abstract: Objective To evaluate conversion degrees of light-cured resins under 40s light irradiation. Methods Fourier transform infrared spectroscopy (FTIR) was used to study the effect of 40 seconds’ irradiation on the conversion degrees of two kinds of light-cured composite resins Filtek Z100, Z350, one kind of light-cured resin cement Relyx Veneer and one kind of dual-cured resin cement Nexus 3 (NX3) when placed for 24 hours and two weeks. Results For all the groups, the degree of double bond conversion of resin was only about 50% after 40 seconds’ irradiation, and the conversion degrees increased along with the storage time. When stored for the same amount of time, conversion degree of Z350 composite resin was higher than that of Z100, while for resin cements it was higher in Relyx Veneer group. Conclusion 40 seconds’ irradiation is not sufficient to make the resin polymerized completely.

Key words: resin, degree of conversion, fourier transform infrared spectroscopy

中图分类号:

R783.1

陈冰卓陈晨陈莹何峰张怀勤谢海峰. Bis-GMA树脂基材料40秒光照条件的聚合度分析[J]. , 2019, 39(5): 395-399.

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