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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Seoul Hee Nam Jin Woo Hong Gyoo Cheon Kim |
| Copyright Year | 2015 |
| Description | Author affiliation: Dept. of Internal Med., Pusan Nat. Univ., Yangsan, South Korea (Jin Woo Hong) || Dept. of Oral Anatomy, Pusan Nat. Univ., Yangsan, South Korea (Seoul Hee Nam; Gyoo Cheon Kim) |
| Abstract | 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. |
| Starting Page | 1535 |
| Ending Page | 1539 |
| File Size | 297902 |
| Page Count | 5 |
| File Format | |
| ISSN | 20937121 |
| e-ISBN | 9788993215083 |
| DOI | 10.1109/ICCAS.2015.7364599 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2015-10-13 |
| Publisher Place | South Korea |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Control, Robotics and Systems - ICROS |
| Subject Keyword | plasma treatment tooth bleaching Bleaching Hydrogen Teeth hydrogen peroxide Plasma measurements carbamide peroxide Plasmas Dentistry Sun non-thermal plasma |
| Content Type | Text |
| Resource Type | Article |
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