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Updated: Jan 27, 2026

Detection and Removal of Tooth-Colored Composite Resin Using the Fluorescence-Aided Identification Technique
Published on: July 27, 2022
Effect of nonthermal atmospheric discharge on stain removal of tooth
Mari Okada1, Masayuki Otsuki1, Junji Tagami1
1Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University.
Abstract:
The purpose of this study was to evaluate the effect of the repeated nonthermal atmospheric discharge (NADC) exposure without peroxide or water on bleaching effect of cycling stained tooth and to evaluate surface roughness and microhardness of the enamel surface exposed by NADC. Specimens with 5×5mm were prepared from extracted bovine teeth. Staining with tea and exposure by NADC were repeated for five times and color was measured at each step. Other specimens were prepared and surface roughness (Ra) and microhardness (Vickers hardness) were measured after exposure by NADC. The repeated NADC exposure without peroxide or water showed bleaching effect for stained bovine teeth. The surface roughness was not changed by NADC exposure. The less microhadness was shown by NADC exposere.
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