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基于酸的修复材料在模拟炎症环境中的体积变化:微计算机断层扫描研究

Giovanna da Cunha Mendonça¹, Karina Ines Medina Carita Tavares¹, Airton Oliveira Santos-Junior¹

¹Department of Restorative Dentistry, School of Dentistry, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil.

Journal of conservative dentistry and endodontics

|October 7, 2024

概括

酸性条件对MTA修复HP (MTAHP) 生物陶水泥的体积稳定性产生负面影响. 在酸性和中性环境中,NeoPUTTY (NP) 显示出卓越的体积稳定性,这表明在炎症性周围条件下表现更好.

科学领域:

生物材料科学生物材料科学
牙科材料牙科材料
牙周内科医院牙周内科医院牙周内科医院

背景情况:

周围组织的炎症可能会造成酸性环境 (低pH).
生物陶修复水泥的性能可能会受到pH值变化的影响.
了解体积稳定性对于内牙材料的临床性能至关重要.

研究的目的:

评估酸性和中性pH对NeoPUTTY (NP) 和MTA修复HP (MTAHP) 的体积变化的影响.
为了在不同的pH条件下比较准备使用的生物陶 (NP) 与粉末/液体系统 (MTAHP) 的体积稳定性.

主要方法:

用NP或MTAHP填充牙管,并使用微型计算机断层扫描 (micro-CT) 扫描.
标本被浸泡在黄油酸 (BA,pH4.1) 或酸缓冲盐水 (PBS,pH7.35) 中7天.
通过微型CT分析评估了四肢和内部部位的体积变化.

主要成果:

在浸入BA或PBS时,NP和MTAHP都表现出极端体积下降.
当暴露在酸性条件下 (BA) 时,MTAHP显示出最大的体积损失.
在材料的内部部分中没有观察到体积变化的显著差异.

结论:

酸性pH负面影响MTA修复HP的体积稳定性.
在酸性和中性环境中,NeoPUTTY的体积变化很低,这表明其尺寸稳定性更好.
在炎症性近牙状况下,NeoPUTTY可能是内牙修复的更可靠选择.

关键词:

酸酸是一种酸盐.在X射线微观断层图像上.牙周内科牙周内科是指牙周内科.物理属性物理属性

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