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논문 기본 정보

자료유형
학술대회자료
저자정보
Seoul Hee Nam (Pusan National University) Jin Woo Hong (Pusan National University) Gyoo Cheon Kim (Pusan National University)
저널정보
제어로봇시스템학회 제어로봇시스템학회 국제학술대회 논문집 ICCAS 2015
발행연도
2015.10
수록면
1,535 - 1,539 (5page)

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초록· 키워드

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The problem associated with bleached teeth is to return to the original tooth color over time. Because the long-term color stability after tooth bleaching is very important, novel technique is requested. This study is to evaluate the long-term color stability of tooth bleached by nonthermal atmospheric pressure plasma with 15% hydrogen peroxide (HP) or 15% carbamide peroxide (CP). Extracted human teeth were assigned to 4 groups (n = 10): Group 1 was treated with plasma activated 15% HP; Group 2 with 15% HP alone; Group 3 with plasma-activated 15% CP gel; and Group 4 with 15% CP alone. A low-frequency driven helium plasma jet was used. After a 30-min application, teeth were immersed in artificial saliva, and color was assessed using the CIELAB system over 6 months, with the overall color changes (ΔE) calculated relative to baseline. Hydroxyl radical concentration (·OH) was detected using methylene blue (MD) dye. Statistical analyzes were performed with Student’s t-test, one-way analysis of variance, and post-hoc Duncan tests. Results: Combination treatment of plasma and 15% HP/CP resulted in higher color stability than 15% HP/CP alone throughout the whole observation period (p < 0.05). The activity of ·OH in combined plasma and low concentration 15% HP/CP was enhanced, relative to bleaching agents alone (p < 0.05). Long-term color stability of tooth bleaching using plasma with 15% HP/CP was retained for 6 months. Tooth bleaching with plasma is an important factor for ·OH production, which is key to the bleaching effect.

목차

Abstract
1. INTRODUCTION
2. MATERIALS AND METHODS
3. Results
4. DISCUSSION
5. CONCLUSIONS
REFERENCES

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