Premium
Enhanced Long‐Term Color Stability of Teeth Treated with Hydrogen Peroxide and Non‐Thermal Atmospheric Pressure Plasma Jets
Author(s) -
Nam Seoul Hee,
Lee Hyun Wook,
Hong Jin Woo,
Lee Hae June,
Kim Gyoo Cheon
Publication year - 2014
Publication title -
plasma processes and polymers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 74
eISSN - 1612-8869
pISSN - 1612-8850
DOI - 10.1002/ppap.201400058
Subject(s) - hydrogen peroxide , carbamide peroxide , atmospheric pressure plasma , nonthermal plasma , chemistry , thermal stability , methylene blue , plasma , atmospheric pressure , nuclear chemistry , dentistry , analytical chemistry (journal) , chromatography , catalysis , biochemistry , medicine , organic chemistry , physics , oceanography , quantum mechanics , photocatalysis , geology
To evaluate the color stability of teeth bleached by non‐thermal atmospheric pressure plasma with 15% hydrogen peroxide (HP) or carbamide peroxide (CP), extracted human teeth were assigned to four groups ( n = 10) and treated with (1) plasma with 15% HP; (2) 15% HP alone; (3) plasma with 15% CP gel; or (4) 15% CP alone. Tooth color was assessed using the CIELAB system over 6 months. Hydroxyl radical concentration ( • OH) was determined using methylene blue dye. Statistical analyses were performed with Student's t ‐test, one‐way ANOVA, and post‐hoc Duncan tests ( p = 0.05). Groups 1 and 3 showed higher color stability than Groups 2 and 4 throughout 6 months. The • OH activity in plasma with HP/CP was greater than that in HP/CP alone. Thus, we recommend plasma application for bleaching as it provides better color stability.