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用四波和激光固化灯相对应的快速固化的复合材料的温度和转换,与传统的固化灯相比

Halah Thanoon¹, Richard B Price², David C Watts³

¹Division of Dentistry, School of Medical Sciences, University of Manchester, Manchester, UK; Department of Restorative Dentistry, College of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia.

Dental materials : official publication of the Academy of Dental Materials

|February 7, 2024

概括

较长的光固化时间导致了较高的温度升高和批量填充树脂复合材料的转化程度. 快固化的复合材料在短时间内在高辐射下表现更好.

科学领域:

牙科材料科学牙科材料科学
聚合物化学聚合物化学
生物医学工程生物医学工程

背景情况:

光固化单元 (LCU) 对于聚合牙树脂基复合材料 (RBC) 是至关重要的.
不同的LCU发射模式和协议可以影响固化效率和热效应.
大量填充RBC提供更快的放置,但需要优化固策略.

研究的目的:

研究不同LCU发射模式 (激光,四波,LED) 对温度升高 (ΔT) 和转换度 (DC) 的影响.
为了比较这些对快速和常规散装RBCs的影响.
为了将ΔT,DC和各种光固化协议提供的辐射暴露相关联.

主要方法:

两个散装RBC (快速和常规) 使用三个LCU (激光,四波,LED) 用不同的协议 (时间,模式) 进行光固化.
使用热成像绘制温度变化图,分析不同深度的ΔT.
使用FTIR光谱测量了转换度 (DC).

主要成果:

在标准模式 (PW-20s,S10-20s,MONET-3s) 中,较长的曝光时间,与短,高辐射协议相比,产生更高的ΔT和DC.
快速光聚合的红细胞 (TPF) 与传统的红细胞 (EVO) 相比,显示出优越的热和转化结果,特别是在高辐射率的情况下.
在4mm深度观察到ΔT和DC之间的正相关性.

结论:

标准或较长的曝光时间从LCU提供更大的辐射暴露,导致更高的DC和ΔT.
快速光聚合的红细胞在短时间暴露于高辐射时表现出卓越的性能.
对于有效的散装复合材料固化,LCU选择和协议优化至关重要.

关键词:

转换的程度转换的程度牙科治愈灯的使用方法美国的FTIR是FTIR.激光激光器激光器激光器光聚合的光聚合方式.暴露于辐射的辐射剂.基于树脂的复合材料.温度温度是指温度.

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