一种含有酸盐的新预混合根管密封剂的物理性质的热诱导变化:一个体外研究
Ryota Ito1, Satoshi Watanabe1, Akira Kouno1
1Department of Pulp Biology and Endodontics, Division of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8549, Japan.
Dentistry journal
|April 26, 2024
概括
加热显著改变了预混合酸密封剂的物理性能,包括AH Plus生物陶密封剂 (AHB). 这些变化,特别是AHB中的薄膜厚度增加,可能会在热垂直压缩过程中损害密封器的性能.
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:
- 基于酸盐的预混合密封剂越来越多地用于内牙治疗.
- 温暖的垂直压缩是一种常见的根管填充技术.
- 热量对这些密封剂的物理性质的影响需要彻底调查.
研究的目的:
- 评估加热对新型预混合酸密封剂 (AH Plus生物陶密封剂; AHB) 的物理性能的影响.
- 为了将这些效果与其他常用的内密封剂进行比较:EndoSequence BC Sealer (ES),AH Plus Jet (AH) 和Pulp Canal Sealer.
- 在热暴露后评估符合ISO 6876:2012标准.
主要方法:
- 在加热和不加热的情况下测试密封器的设置时间,流量和薄膜厚度 (100°C30/60秒).
- 使用扫描电子显微镜 (SEM) 和能量分散式X射线光谱 (EDS) 的超结构和元素分析.
- 使用单向ANOVA与Tukey hoc后期测试 (α = 0.05) 的统计分析.
主要成果:
- 所有测试的密封器都显示了显著减少的设置时间和加热后的流量增加 (p <0.05).
- 与其他密封剂相比,AHB在加热后表现出明显更高的薄膜厚度 (p < 0.05).
- 热应用的AHB和ES未能满足ISO标准的测试属性,除了ES设置时间.
结论:
- 加热显著改变预混合酸密封剂的物理性质.
- 加热后AHB的薄膜厚度增加可能会对其性能产生负面影响,特别是在温暖的垂直紧缩时.
- 需要进一步的研究,以了解热应激对海动物行为的长期临床影响.
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