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The Scientific World Journal
Volume 2015, Article ID 581731, 5 pages
Research Article

Efficacy of Nonthermal Atmospheric Pressure Plasma for Tooth Bleaching

1Department of Oral Anatomy, School of Dentistry, Pusan National University, Yangsan 626-870, Republic of Korea
2Department of Electrical Engineering, Pusan National University, Busan 609-735, Republic of Korea
3Department of Internal Medicine, School of Korean Medicine, Pusan National University, Yangsan 626-870, Republic of Korea

Received 15 October 2014; Revised 2 December 2014; Accepted 2 December 2014

Academic Editor: Serdar Üşümez

Copyright © 2015 Seoul Hee Nam et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The conventional light source used for tooth bleaching has the potential to cause thermal damage, and the actual role of the light source is doubtful. In this study, we evaluated bleaching efficacy, temperature, and morphological safety after tooth bleaching with nonthermal atmospheric pressure plasma. Tooth bleaching combined with plasma had improved efficacy in providing a higher level of brightness. The temperature of the pulp chamber was maintained around 37°C, indicating that the plasma does not cause any thermal damage. The morphological results of tooth bleaching with plasma did not affect mineral composition under scanning electron microscopy (SEM) observations. On the basis of these results, the application of plasma and low concentration of 15% carbamide peroxide (CP) has a high capability for effective tooth bleaching. It can be documented that plasma is a safe energe source, which has no deleterious effects on the tooth surface.