在使用三种不同的高辐射光固化单元的逐步粘合修复过程中脉温度变化
R K Nakagawa1, H H Araújo de Oliveira2, L G Abreu3
1Rodrigo Keigo Nakagawa, DDS, MSc, PhD, postdoctoral researcher, Department of Restorative Dentistry, Federal University of Minas Gerais, Bel o Horizonte, Brazil.
Operative dentistry
|January 5, 2024
概括
牙修复期间的肉质温度 (PT) 受光固化单元 (LCU) 和树脂复合物阴影的影响,而不是厚度. 所有测试的LCU都是安全的,但阴影会影响热吸收.
科学领域:
- 牙科材料科学 牙科材料科学
- 生物材料工程 生物材料工程
- 恢复性牙科 恢复性牙科
背景情况:
- 牙手术期间脉组织温度升高是一个问题.
- 热量产生与光固化单元 (LCU) 和修复技术有关.
研究的目的:
- 为了比较由三个LCU引起的纸温度 (PT) 变化.
- 为了评估树脂复合材料的阴影和厚度对PT的影响.
- 在模拟的口内条件下评估散热.
主要方法:
- 使用牛切口模型模拟肉流体循环和口内温度.
- 在模拟的修复步骤中测量外部和内部PT.
- 使用三个LCU (Valo,Elipar,Radii Cal) 的不同树脂复合物色调 (A1,A4) 和增量,比较温度变化.
主要成果:
- 与Elipar和Radii Cal.相比,Valo LCU在光固化过程中发生了显著的PT增加.
- 根据树脂复合材料厚度,没有观察到显著的PT差异.
- 树脂复合材料阴影A1导致温度变化高于阴影A4.
- 没有测试的LCU超过了纸耐受性极限 (增加5.5°C).
结论:
- 微循环和空气-水流在牙科手术期间有效散热热量.
- 这三个LCU都在临床上是安全的关于纸温度.
- 树脂复合材料的阴影显著影响辐射吸收和纸温度差异.
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