间接空气冷却在快速高强度光固化过程中对内温度的变化的影响,使用散装填充树脂复合材料
Samille Biasi Miranda1, Vinícius Cristovão de Oliveira Mendes1, Caroline de Farias Charamba Leal1
1Departament of Restorative Dentistry, School of Dentistry, University of Pernambuco, Recife 50100-130, PE, Brazil.
Journal of clinical and experimental dentistry
|February 17, 2025
概括
间接的空气冷却有效地减少了在散装填充树脂复合材料光固化过程中的内温度升高. 这种方法在V类修复中有利于控制热量,特别是在剩余牙最小的情况下.
科学领域:
- 牙科材料科学 牙科材料科学
- 恢复性牙科 恢复性牙科
- 生物材料是一种生物材料.
背景情况:
- 光固化树脂复合材料可以产生热量,可能会损害牙纸.
- 大量填充复合材料用于效率,但可能会增加温度变化.
- 在修复过程中,控制腹膜内温度升高对于脉活力至关重要.
研究的目的:
- 为了研究间接空气冷却对脉内温度变化的影响.
- 为了评估散装填充树脂复合材料在不同的光固化协议期间的温度变化.
- 评估在具有不同牙厚度的V类腔体中空气冷却的有效性.
主要方法:
- 准备了V类腔,并用两个散装填充树脂复合材料恢复了它们.
- 测量了带有和没有间接空气冷却的肺内温度变化.
- 应用了不同的光固化方案 (高和中等强度,不同持续时间).
主要成果:
- 没有空气冷却的高强度光固化显著增加了脉内温度.
- 在大多数测试组中,间接空气冷却始终降低了温度升高.
- 对于3s的Tetric PowerFlow,注意到了一个例外,其中空气冷却显示出最小的效果.
结论:
- 间接空气冷却是一种有效的技术,可以最大限度地降低腹腔内温度的升高.
- 这种方法对于残留1毫米牙的V类修复特别有用.
- 空气冷却可以提高光固化过程中使用散装树脂复合材料的安全性.
相关概念视频
Accelerated Curing of Concrete
104
Accelerating concrete curing is achieved by applying heat and additional moisture. This process accelerates the hydration of the cement, resulting in an earlier strength gain in the concrete. Steam curing is a method wherein the concrete products are either transported through a chamber on a conveyor belt or encased in plastic, allowing steam at atmospheric pressure to circulate freely around them. This process begins with a phase of moist curing that typically lasts between 3 to 5 hours, after...
104
Hot Weather Concreting
52
Concreting at elevated temperatures accelerates the hydration process, leading to quicker setting but potentially reducing the long-term strength of the concrete structure. Additionally, low air humidity fosters rapid moisture loss from the concrete, resulting in reduced workability, pronounced plastic shrinkage, and a higher likelihood of crazing.
Mitigating the heat increase in concrete can be economically achieved by shading aggregate stockpiles to prevent heating from solar radiation,...
Mitigating the heat increase in concrete can be economically achieved by shading aggregate stockpiles to prevent heating from solar radiation,...
52


