聚多巴胺对矿物三氧化物聚合物的粘合特性对树脂复合材料的影响
Arumugam Keerthivasan1, Kothandaraman Rajkumar1, Sampath Vidhya1
1Department of Conservative Dentistry and Endodontics, SRM Institute of Science and Technology, SRM Dental College, Chennai, India.
European endodontic journal
|May 31, 2023
概括
聚多巴胺 (PDA) 预处理增强了矿物三氧化物聚合物 (MTA) 和树脂复合物 (RC) 修复之间的键强度. 这种表面修改提高了可湿性,并保护了MTA.
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
- 恢复性牙科 恢复性牙科
背景情况:
- 生命脉治疗对于保持年轻的永久牙至关重要.
- 使用树脂复合材料 (RC) 对纸封装材料 (如矿物三氧化聚合物 (MTA)) 进行即时密封是具有挑战性的,因为MTA的结性质.
- 改善MTA和RC之间的结合强度对于成功的生命脉治疗至关重要.
研究的目的:
- 评估聚多巴胺 (PDA) 预处理对MTA到RC的可湿性,表面形态和剪切键强度 (SBS) 的影响.
- 确定PDA预处理是否有助于在MTA上立即放置树脂复合材料的恢复.
主要方法:
- 使用接触角 (CA) 和扫描电子显微镜 (SEM) 来分析表面变化.
- 准备了144个MTA样本,并将其分为PDA预处理和未处理的组.
- 树脂复合复原立即放置或在3,24或96小时后放置,然后进行SBS测试.
主要成果:
- PDA预处理显著降低了接触角度,表明改善了湿透性.
- SEM显示,PDA涂层保护了MTA的表面结构免受酸蚀刻的影响.
- 在所有时间点中,PDA预处理显著增加了SBS,即时的键强度与96小时后未经处理的MTA相比.
结论:
- 聚多巴胺的预处理提高了MTA的湿透性和表面完整性.
- PDA预处理显著增加了树脂复合物的切割键强度到MTA.
- 这种方法可能使在生命脉治疗中立即恢复树脂复合物.
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