酸颗粒:在混合层中的生物和机械作用
M Damasceno E Souza Chiari1,2, F Maron Vichi3, E Iraê Almeida Hummel Pimenta Santos3
1Department of Biomaterials and Oral Biology, Faculty of Dentistry, Sao Paulo University, São Paulo, Brazil.
Journal of dental research
|June 26, 2025
概括
酸颗粒 (CaSi) 通过促进矿物沉和抑制酶,改善了牙结合的寿命,尽管最初的机械性质减少了. 这提高了混合层和牙长期耐用性.
科学领域:
- 生物材料科学 生物材料科学
- 牙科材料 牙科材料
- 粘合式牙科 粘合式牙科
背景情况:
- 在牙科修复中,提高粘合接口的寿命至关重要.
- 离子释放颗粒被探索以提高粘合剂的耐用性.
- 酸颗粒 (CaSi) 显示出重矿化和生物活性的潜力.
研究的目的:
- 评估酸颗粒 (CaSi) 作为粘合树脂中的预处理和/或添加剂对粘合接口的寿命的影响.
- 评估CaSi对机械性能,矿物沉和结合界面上的酶活性的影响.
主要方法:
- 酸盐颗粒 (CaSi) 作为酸蚀刻牙的预处理,并/或添加到商用三步粘合系统中.
- 机械性质是通过纳米痕测量.
- 在模拟体液 (SBF) 中储存后,评估了矿物沉量,和含量,酶活性和微拉伸键强度.
主要成果:
- 加入CaSi降低了粘合层最初的机械性能.
- 长期储存后观察到CaSi的混合层和牙机械特性显著增加,表明无沉.
- CaSi抑制了金属蛋白酶的活性,并减少了氧的释放.
- 在SBF储存12个月后,所有组的微拉力键强度都下降了.
结论:
- 酸颗粒 (CaSi),无论是作为预处理或纳入结合树脂,促进矿物沉,并抑制结合界面上的酶活性.
- CaSi可以提高混合层和底层牙的耐用性.
- 虽然CaSi显示了改善结合接口寿命的希望,但需要进一步的研究来优化结合强度保留.
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