先进的微观结构研究三种不同的堵塞技术的内牙密封能力的三种不同的堵塞技术
Mihaela Păstrav1, Radu Marcel Chisnoiu2, Marioara Moldovan3
1Department of Orthodontics, Faculty of Dental Medicine, "Iuliu Hațieganu" University of Medicine and Pharmacy, 8 Victor Babeș Street, 400012 Cluj-Napoca, Romania.
Dentistry journal
|January 27, 2026
概括
这项研究比较了使用AH Plus密封剂的三种根管堵塞技术 (单,侧压缩,热垂直凝结). 所有方法都提供了有效的密封,在密封层的厚度和分布上发现了差异.
科学领域:
- 牙周内科医院 牙周内科医院 牙周内科医院
- 牙科材料科学 牙科材料科学
- 显微镜的使用方法
背景情况:
- 有效的根管密封对于内牙治疗成功至关重要.
- 通常使用的是基于树脂的密封剂,如AH Plus.
- 不同的封闭技术可能会影响密封器的性能.
研究的目的:
- 评估和比较AH Plus密封器的密封能力和元素组成,使用单 (SC),横向压缩 (LC) 和热垂直凝结 (WVC) 阻塞技术.
- 分析微观结构特征和界面完整性.
- 为了评估填充的根通道内的元素分布.
主要方法:
- 60个提取的单根牙被仪器仪表并分为三组 (n=20) 用AH Plus喷气密封器进行SC,LC和WVC堵塞.
- 使用了放射,光学显微镜和扫描电子显微镜 (SEM) 与能量分散式X射线光谱 (EDX).
- 评估重点是密封性能,微观结构分析和元素组成.
主要成果:
- 单个 (SC) 显示出良好的肠粘度,但更厚,不均的密封层 (45-80μm).
- 热垂直凝结 (WVC) 提供了良好的适应性和薄而均的密封层 (~35μm).
- 侧向紧缩 (LC) 显示了良好的粘附性,偶尔会出现不规则. 在所有组中,SEM/EDX确认了元素组成 (C,O,Ca,Zn,Ba,S).
结论:
- 所有三种封闭技术 (SC,WVC,LC) 都有效地用AH Plus密封剂密封了根通道.
- 主要的区别在于密封层的厚度及其均性.
- WVC技术产生了最均和最薄的密封层.
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