基于登德里默的外纤维脱矿化,以优化树脂-登丁键稳定性
Yanning He1, Yiwen Wang1, Junhan Yang1
1School/Hospital of Stomatology, Lanzhou University, Lanzhou, Gansu 730000, China; Key Laboratory of Dental Maxillofacial Reconstruction and Biological Intelligence Manufacturing of Gansu Province, Lanzhou, Gansu 730000, China.
概括
基化PAMAM dendrimer (PEG-P) 为牙去矿化提供了一种新的方法,保护矿物质并减少降解. 这种方法通过抑制细菌活动和蛋白酶激活来增强树脂-丁键的耐用性.
科学领域:
- 生物材料科学 生物材料科学
- 牙科材料 牙科材料
- 纳米技术纳米技术
背景情况:
- 一种新的选择性外纤维牙去矿化概念可以保存内纤维矿物质.
- 这种方法旨在防止混杂层中的内源蛋白酶激活和原降解.
- 树脂-牙键的耐用性是恢复性牙科的关键挑战.
研究的目的:
- 为了研究PEGylated PAMAM dendrimer (PEG-P) 作为外纤维牙去矿化的一种抗菌条件剂.
- 评估PEG-P的潜力,以提高树脂-丁键的耐用性.
- 评价PEG-P在保护内纤维矿物质和抑制细菌活动方面的有效性.
主要方法:
- 用ICP-AES测量PEG-P对离子的化能力.
- 微拉力键强度测试确定了最佳的PEG-P度和PEGylation程度.
- 通过FE-SEM,AFM和in-situ淋巴镜检查了非矿物化形态和凝溶解活性.
- 使用活/死染色评估的PEG-P对口腔细菌的抗菌作用.
主要成果:
- PEG-P证明了离子的有效化.
- 20%的PEG-P调节产生了与H3PO4蚀刻相当的键强度,在热循环后保持.
- 使用PEG-P,FE-SEM和AFM揭示了部分去矿化牙与矿化原纤维.
- 在现场的细胞图显示,PEG-P处理的混合层中蛋白酶活性可以忽略不计.
- PEG-P对口腔细菌表现出强大的抗菌作用.
结论:
- 基于PEG-P的去矿化可以保存纤维内矿物质,并减少原体的降解.
- 这种方法有效地抑制了内源蛋白酶激活和细菌保留.
- PEG-P的应用显著提高了树脂-丁键的耐用性.
- 使用PEG-P选择性外纤维脱矿化是一种有前途的牙粘合剂进步.
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