Open AccessEffect of sodium fluoride pretreatment on the efficacy of an in‐office bleaching agent: An in vitro study
Author(s) -
Kyaw Khin Yupar,
Otsuki Masayuki,
Segarra Michelle Sunico,
Tagami Junji
Publication year - 2018
Publication title -
clinical and experimental dental research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.464
H-Index - 9
ISSN - 2057-4347
DOI - 10.1002/cre2.113
Subject(s) - distilled water , sodium fluoride , colorimeter , chemistry , nuclear chemistry , fluoride , colorimetry , significant difference , dentistry , carbamide peroxide , chromatography , medicine , hydrogen peroxide , biochemistry , inorganic chemistry , physics , quantum mechanics
This in vitro study evaluated the effect of sodium fluoride (NaF) on the bleaching efficacy using an artificial discolored bovine tooth model. Twenty specimens were prepared from bovine teeth by staining with black tea extract and were divided into two groups ( n = 10). In control group, specimens were immersed in distilled water for 30 min. In NaF group, specimens were applied with 0.2% NaF for 30 min. Then, the specimens in each group were bleached by an in‐office bleaching material (Shofu Hi‐Lite, Shofu, Kyoto, Japan). The CIE L*a*b* values were measured by a dental colorimeter before and after 10 consecutive bleaching treatments, and the color difference (ΔE) was calculated. Brightness and color difference (ΔE) increased in both groups per bleaching cycle. There were no statistical differences in ΔE values between both groups ( p > 0.05). It was concluded that the application of NaF before bleaching did not interfere with the bleaching effect.