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光束分歧对牙光固化装置辐射的作用

Anubhav Gulati¹, Soheil Ghaffari¹, Brett Daniel MacNeil²

¹Department of Dental Clinical Sciences, Dalhousie University, Halifax, Nova Scotia, Canada.

Dental materials : official publication of the Academy of Dental Materials

|February 2, 2025

概括

牙科光固化单元 (LCU) 的辐射输出与距离有很大差异. 较宽的光束分歧角度与更大的辐射损失相关,影响固化时间和有效性.

科学领域:

牙科材料科学牙科材料科学
生物光子学生物光子学
光学工程的光学工程.

背景情况:

牙光固化单元 (LCU) 对于聚合牙修复材料至关重要.
液晶电池的有效性取决于为恢复提供足够的光能 (辐射).
像光束分歧这样的因素可以显著影响辐射分布和缩深度.

研究的目的:

测量各种牙科LCU的光束分歧角度和光输出.
为了研究光束分歧和辐射减少之间的关系作为距离的函数.
评估这些光学特性对所需固化时间的影响.

主要方法:

评估了20个牙科LCU,包括LED,石英--素 (QTH) 和激光二极管类型.
使用实验室级宽光成像仪测量光束分歧角度.
在距离LCU尖端5mm和10mm的距离上测量了辐射强度.

主要成果:

在20个LCU中观察到功率,辐射和辐射光谱的显著变化.
在10毫米的辐射减少在不同的LCU中从5.6%到85.7%不等.
在光束分歧角度和照射强度随距离的减少之间发现了正相关性.
激光二极管LCU显示出最少的分歧和辐射损失,而QTH LCU显示出最大的分歧和辐射损失.

结论:

宽光成像器对于描述LCU光束分歧和预测随距离变化的辐射强度变化是有效的.
在10毫米处,一些LCU可能需要高达五倍的曝光时间,以实现与尖端相比相当的能量输送.
了解LCU的光学特性对于优化聚合并确保临床成功至关重要.

关键词:

激光二极管是如何使用的照明固化单元照明固化单元发光二极管是一种发光二极管.摄影修复 (photocuring) 是一种修复方法.基于树脂的复合材料是一种复合材料.

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