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模拟低负荷功能负荷对空隙体积和不同逆向填充材料分布的影响:微计算机断层分析:微计算机断层分析

Hanan Alharbi¹, Ezdyan Alsemanni², Areej Almutairi³

¹Department of Conservative Dental Sciences, College of Dentistry, Qassim University, Buraydah 52571, Saudi Arabia.

Journal of functional biomaterials

|February 26, 2026

概括

与ProRoot MTA相比,内牙微手术材料,内牙修复材料 (ERRM) 和带有生物陶密封器的ERRM在模拟的力下显示出更好的密封性和更少的空隙形成. 这些材料保持了更好的边际适应性和完整性.

科学领域:

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

背景情况:

内牙微手术的成功取决于顶端密封的完整性和在功能负载下根端填充材料的适应性.
对ERRM和生物陶密封剂等新材料与MTA等既有材料进行评估对于改善外科手术结果至关重要.

研究的目的:

为了比较ProRoot MTA,ERRM和ERRM与仿真功能负载下的生物陶密封器的空虚体积和分布.
评估这些材料装载后的边际适应性和密封性能.

主要方法:

44 颗牙接受了顶腔准备,并被分为四组:控制,ProRoot MTA,ERRM ,ERRM + BC 密封器.
微计算机断层扫描 (micro-CT) 用于量化循环加载前后的空隙 (20N为1,000,000个周期).

主要成果:

功能负载在所有组中都增加了空洞体积,但ERRM和ERRM + BC Sealer与MTA和对照组相比,表现出明显较低的内部和边缘空洞.
ERRM和ERRM + BC Sealer表现出更好的边际适应和更低的空隙比率.
只有在Cavit (对照) 和MTA组中才观察到物质脱落.

结论:

ERRM 和 ERRM + BC 密封器在模拟的闭塞应力下提供卓越的边缘适应性和抵抗空洞形成的抵抗力.
这些发现表明,ERRM和ERRM + BC Sealer在内牙微手术中提供了保存的密封性能.
该研究强调了基于ERRM的材料在根端填充应用中增强耐用性的潜力.

关键词:

在ERRM中,ERRM是ERRM.在MTA中,MTA是MTA.生物陶是生物陶的组成部分.牙周内科牙周内科是指牙周内科.填充能力填充能力在体外 (in vitro) 研究的研究.微手术是一种微手术.没有空洞,没有空洞.

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