Pyro-catalysis for Tooth Whitening Via Oral Temperature Fluctuation

Overview

Journal Nat Commun

Specialty Biology

Date 2022 Jul 29

PMID 35906221

Authors

Yang Wang

Shuhao Wang

Yanze Meng

Zhen Liu

Dijie Li

Yunyang Bai

Guoliang Yuan

Yaojin Wang

Xuehui Zhang

Xiaoguang Li

Xuliang Deng

Affiliations

Soon will be listed here.

Abstract

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

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