Pyro-catalysis for tooth whitening via oral temperature fluctuation

• DOI: 10.1038/s41467-022-32132-3
• Publication Date: 2022-07-29T19:04:06Z
• Authors: Yang Wang; Shuhao Wang; Yanze Meng; Zhen Liu; Dijie Li; Yunyang Bai; Guoliang Yuan; Yaojin Wang; Xuehui Zhang; Xiaoguang Li; Xuliang Deng
• Keywords: Tooth Whitening; Degradation

Abstract Tooth whitening has recently become one of the most popular aesthetic dentistry procedures. Beyond classic hydrogen peroxide-based agents, photo-catalysts and piezo-catalysts have been demonstrated for non-destructive on-demand tooth whitening. However, their usage challenged due to relatively limited physical stimuli light irradiation ultrasonic mechanical vibration. To address this challenge, we report here a convenient strategy based on pyro-catalysis effect, realized via ubiquitous oral motion-induced temperature fluctuations. Degradation organic dyes is performed under cooling/heating cycling simulate natural fluctuations associated with intake speech. Teeth stained by habitual beverages flavorings can be whitened pyroelectric particles-embedded hydrogel small surrounding fluctuation. Furthermore, pyro-catalysis-based procedure exhibits therapeutic biosafety sustainability. In view exemplary demonstration, prevalent fluctuation will enable tremendous potential practical applications.