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边缘蚀刻:作为树脂透预处理,在重复和活跃的HCl应用下损失了面

Maria Paula Novaes Camargo Manna¹, Talita Portela Pereira², Bruna de Oliveira Iatarola¹

¹Universidade de São Paulo, Faculdade de Odontologia, Departamento de Dentística, São Paulo, Brasil.

Journal of applied oral science : revista FOB

|September 3, 2025

概括

与被动方法相比,重复的活性盐酸 (HCl) 应用显著增加了质损失. 这一发现挑战了最小干预牙科的原则,

科学领域:

牙科材料科学
保守的牙科
生物材料

背景情况:

盐酸 (HCl) 用于白斑病变 (WSL) 的树脂透预处理.
单次被动化物应用可以去除20-45μm的面膜,并且在WSL外长2mm.
重复或活跃的 HCl 应用可能会导致更大程度的牙去除.

研究的目的:

评估15%HCl蚀刻后的面膜损失和微形状.
研究被动 (P) 与主动 (A) 应用方法的效应.
评估不同应用频率 (1x,2x,3x) 和安慰剂对照的结果.

主要方法:

牛切口经过WSL模拟,并随机分为八组 (n=12).
使用15%的HCl进行了蚀刻,使用被动或主动方法和1-3次应用.
通过光学分析测量面损失;通过扫描电子显微镜 (SEM) 分析微形状.

主要成果:

活性HCl的应用导致了比被动应用显著更大的质表面损失.
随着HCl应用的数量增加,乳的损失也会增加.
SEM显示了II型和III型蚀刻模式,其中II型更为普遍;没有发现处理与蚀刻模式的关联.

结论:

多次和活跃的盐酸 (HCl) 应用可能会导致大量的牙去除.
这些发现引发了对剩余牙结构的保护的担忧.
这项研究质疑激进的HCl协议与最小干预牙科原则的兼容性.

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