在热挑战下根通道密封剂的物理化学变化:基于酸盐和环氧树脂的密封剂的比较分析
Hye-In Kim1, Young-Eun Jang1, Yemi Kim1
1Department of Conservative Dentistry, College of Medicine, Ewha Womans University, Seoul 07986, Republic of Korea.
Materials (Basel, Switzerland)
|April 27, 2024
概括
热量会影响牙密封剂的物理化学特性. 基于酸盐的密封剂 (CSBS) 显示出更高的pH值和释放,但与基于环氧树脂的密封剂 (ERBS) 相比,在加热下溶解度增加.
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
- 牙周内科医院 牙周内科医院 牙周内科医院
背景情况:
- 基于酸的密封剂 (CSBS) 是用于根运河堵塞的新材料.
- 以环氧树脂为基础的密封剂 (ERBS) 是传统的材料,具有成熟的特性.
- 在热应力下了解密封剂的行为对于临床应用至关重要.
研究的目的:
- 为了比较热量对CSBS和ERBS物理化学性质的影响.
- 评估这些密封剂是否适合临床使用,特别是在高温下.
主要方法:
- 物理化学性质 (流量,薄膜厚度,定时间,溶解度) 根据ISO 6876/2012在37°C和100°C下进行了测试.
- 通过热重力测量分析评估了pH值,离子释放和质量变化.
- 使用SEM和FTIR分析化学成分.
主要成果:
- 生物根流,AH Plus生物陶和AH Plus满足了流量和薄膜厚度的ISO标准,即使在热应用后也是如此.
- 所有密封器显示在100°C下设置时间缩短.
- 与AH Plus相比,CSBS的pH值和释放量明显高于AH Plus,但它们的溶解度超过了ISO标准,特别是在暴露于热量后.
结论:
- 生物根流,AH Plus生物陶和AH Plus在热应用中表现出有利的物理化学特性.
- 由于薄膜厚度增加和高温下pH/溶解度降低,BioRoot RCS在热封闭过程中需要小心.
- CSBS的高释放是有益的,但它们的溶解性需要仔细考虑.
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