Effect of a New Bleaching Gel on Tooth Whitening
Uniformed Services University of the Health Sciences Lackland AFB Texas United States
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The purpose of this study was to test the efficacy of a novel bleaching agent containing a unique tri-barrel hydremide peroxide gel KR. Bovine incisors were mounted into a custom resin arch-shaped mounting device. Four groups of 10 teeth were created using mounting devices containing 5 teeth each n10. Teeth were immersed in a solution of black tea for six days and allowed to stabilize for seven days. Baseline color readings of L, a and b were obtained using a spectrophotometer. Groups 1 KR 13 hydremide peroxide, KR 16 carbamide peroxide, KR 34 hydremide peroxide and 2 Opalescence Boost 40 hydrogen peroxide HP and Opalescence Potassium Fluoride PF 15 carbamide peroxide CP, Ultradent had bleaching gel applied to the teeth alone and in trays to simulate a combination of in office and home bleaching Combined. Groups 3 KR 16 CP and 4 Opalescence PF 15 CP,Ultradent had bleaching gel applied in trays to simulate home bleaching only Home. Spectrophotometer readings of L a b were performed again at the end of active bleaching immediate and at 3 and 6 months post-bleaching. The mounted teeth specimens were stored in artificial saliva at 37C between active bleaching treatments. Immediately post-bleaching, the use of Opalescence gel resulted in greater changein delta E and delta b less yellow for Combined and Home bleaching techniques compared to KR. After six months, Opalescence had significantly greater delta E and delta b compared to KR for Home bleaching only. There was no significant difference in delta L between Opalescence and KR at any time period with either technique. The use of the novel tri-barrel hydremide peroxide bleaching system KR did not offer any advantages in the lightening of bovine teeth compared to a traditional bleaching system Opalescence of hydrogen or carbamide peroxide.
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