搪瓷漆
光动力疗法
牙齿美白
材料科学
余辉
牙变色
纳米技术
系统间交叉
牙釉质
牙科
光化学
化学
复合材料
有机化学
医学
物理
伽马射线暴
天文
核物理学
单重态
激发态
作者
Hao Liu,Yikai Chen,Luoqi Mo,F. A. Long,Yixiao Wang,Zhouyi Guo,Haolin Chen,Chaofan Hu,Zhiming Liu
出处
期刊:ACS Nano
[American Chemical Society]
日期:2023-10-20
卷期号:17 (21): 21195-21205
被引量:15
标识
DOI:10.1021/acsnano.3c05116
摘要
Teeth staining is a common dental health challenge in many parts of the world. Traditional teeth whitening techniques often lead to enamel damage and soft tissue toxicity due to the use of bioincompatible whitening reagents and continuous strong light irradiation. Herein, an "afterglow" photodynamic therapy (aPDT) for teeth whitening is proposed, which is realized by energy transition pathways of intersystem crossing. The covalent and hydrogen bonds formed by carbon dots embedded in silica nanoparticles (CDs@SiO2) facilitate the passage of energy through intersystem crossing (ISC), thereby extending the half-life of reactive oxygen species (ROS). The degradation efficiency of aPDT on dyes was higher than 95% in all cases. It can thoroughly whiten teeth by eliminating stains deep in the enamel without damaging the enamel structure and causing any tissue toxicity. This study illustrates the superiority of aPDT for dental whitening and the approach to exploring carbon-dots-based nanostructures in the treatment of oral diseases.
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