Simultaneous Photodynamic Eradication of Tooth Biofilm and Tooth Whitening with an Aggregation‐Induced Emission Luminogen. Issue 20 (7th May 2022)

• Record Type: Journal Article
• Authors: Gu, Meijia; Jiang, Susu; Xu, Xiaoyu; Wu, Ming‐Yu; Chen, Chao; Yuan, Yuncong; Chen, Qingrong; Sun, Yidan; Chen, Luojia; Shen, Chao; Guo, Peng; Liu, Shujie; Zhao, Engui; Chen, Shi; Chen, Sijie
• Is Part Of: Advanced science. Volume 9:Issue 20(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-05-07
• Subjects: aggregation‐induced emission -- biofilm -- photodynamic therapy -- Streptococcus mutans -- tooth whitening; Science -- Periodicals; 505
• DOI: 10.1002/advs.202106071
• Languages: English
• ISSNs: 2198-3844

Abstract

Abstract: Dental caries is among the most prevalent dental diseases globally, which arises from the formation of microbial biofilm on teeth. Besides, tooth whitening represents one of the fastest‐growing areas of cosmetic dentistry. It will thus be great if tooth biofilm eradication can be combined with tooth whitening. Herein, a highly efficient photodynamic dental therapy strategy is reported for tooth biofilm eradication and tooth discoloration by employing a photosensitizer (DTTPB) with aggregation‐induced emission characteristics. DTTPB can efficiently inactivate S. mutans, and inhibit biofilm formation by suppressing the expression of genes associated with extracellular polymeric substance synthesis, bacterial adhesion, and superoxide reduction. Its inhibition performance can be further enhanced through combined treatment with chlorhexidine. Besides, DTTPB exhibits an excellent tooth‐discoloration effect on both colored saliva‐coated hydroxyapatite and clinical teeth, with short treatment time (less than 1 h), better tooth‐whitening performance than 30% hydrogen peroxide, and almost no damage to the teeth. DTTPB also demonstrates excellent biocompatibility with neglectable hemolysis effect on mouse red blood cells and almost no killing effect on mammalian cells, which enables its potential applications for simultaneous tooth biofilm eradication and tooth whitening in clinical dentistry. Abstract : In this work, an aggregation‐induced‐emission‐active photosensitizer, DTTPB, with high reactive oxygen species sensitizing efficiency and broad absorption band is employed for photodynamic killing of planktonic bacteria, inhibition of biofilm formation, and eradication of biofilm. Besides, DTTPB‐mediated photodynamic therapy could efficiently whiten both colored oral tooth models and clinical teeth without destroying tooth structure.