实验性牙蚀刻对牙键强度,金属蛋白酶抑制和抗菌膜活性的影响
Beatriz Ometto Sahadi1, Maicon Sebold1, Carolina Bosso André2
1Department of Restorative Dentistry, Operative Dentistry Division, University of Campinas, Piracicaba Dental School, Avenida Limeira 901, Areião, 13414-903 Piracicaba, SP, Brazil.
概括
新的牙蚀刻剂显示出作为腔腔消毒剂的潜力,抑制金属蛋白酶 (MMP) 活性并随着时间的推移保持键强度. 这些发现为牙科修复手术提供了有希望的替代方案.
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:
- 丹丁粘合需要有效的蚀刻剂来确保持久的修复.
- 金属蛋白酶 (MMP) 活性可以降解混合层,损害键的寿命.
- 研究具有抗菌和MMP抑制特性的新型涂料对于改善临床结果至关重要.
研究的目的:
- 与酸 (PA) 相比,评估三种实验性牙蚀刻的微拉伸键强度 (μTBS),故障模式和接口特性.
- 评估这些蚀刻剂对*S. Mutans*生物膜的in situ金属蛋白酶 (MMP) 活性和抗菌作用.
主要方法:
- 四种蚀刻剂 (PA,酸+酸,氧酸铁+酸,酸) 用于人类牙上的通用粘合剂.
- 微拉力键强度和故障模式在24小时和一年后进行了测试.
- 扫描电子显微镜,激光扫描共聚焦显微镜和可活细胞计数用于形态,MMP活性和抗菌评估.
主要成果:
- 酸 (PA) 产生了最高的结合强度,PA,酸和酸在一年后显示稳定性.
- 实验蚀刻器形成了带有短树脂标签的薄混合层.
- 基于酸的蚀刻剂抑制了MMP活性,所有测试的蚀刻剂都对*S. Mutans*表现出抗菌作用.
结论:
- 实验性牙蚀刻剂显示出抑制MMP活性和作为腔腔消毒剂的潜力.
- 这些新型蚀刻剂在牙科修复手术中提供了有前途的辅助益处,有可能提高结合耐用性并减少细菌污染.
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