期刊
IEEE TRANSACTIONS ON PLASMA SCIENCE
卷 38, 期 11, 页码 3143-3151出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPS.2010.2066291
关键词
Electron spin resonance (ESR); optical emission spectra; plasma microjet (PMJ); tooth whitening
资金
- China International Science and Technology Cooperation [2009DFB30370]
- Bioelectrics Inc.
- U.S., and by National Basic Research Program [2007CB935602]
- U.S. Air Force Office of Scientific Research [FA9550-08-1-0332]
We reported in this paper the tooth-whitening effect by a direct-current cold atmospheric-pressure air plasma microjet (PMJ) and saline solution (0.9%). All teeth were randomly divided into three groups, treated for 20 min with an air blow and saline solution, a PMJ and saline solution, and 35% hydrogen peroxide gel, respectively. Compared with the other groups, the teeth treated with the PMJ and saline solution showed the best tooth-whitening effect. The microhardness of the tooth enamel measurement showed no apparent differences among the three groups. A minor enamel surface morphological change was observed via SEM but was considered acceptable. Singlet oxygen (O-1(2)) and hydroxyl ((OH)-O-center dot) radicals were detected by electron spin resonance spectroscopy. Atomic oxygen (O) was observed in the optical emission spectra of the PMJ. O-1(2), (OH)-O-center dot, and O were considered to be the key agents during the tooth-whitening process. This novel method of tooth whitening has the potential to revolutionize the clinical tooth-whitening procedure.
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