Dental bleaching compositions with high concentrations of hydrog

Drug – bio-affecting and body treating compositions – Dentifrices – Oxygen or chlorine releasing compound containing

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433216, 25218625, 25218626, 25218629, 2521863, A61K 716, A61K 720, C01B 1501, C01B 15055

Patent

active

058583327

ABSTRACT:
Dental bleaching compositions that include a high concentration of bleaching agent and a bleaching agent stabilizer that maintains the potency of the bleaching agent over time. The dental bleaching compositions of the present invention may be one-part, pre-mixed compositions that do not require mixing at the time of treating a patient's teeth but which remain stable over time. The bleaching agent may consist of hydrogen peroxide, either in aqueous form or complexed with urea (carbamide peroxide) or sodium perborate. The bleaching agent stabilizer includes an impurity scavenger that binds or ties up impurities, such as errant or residual metal ions, that can cause decomposition of the bleaching agent. The bleaching agent stabilizer may include a carboxylic acid chelator or a tin salt. The bleaching composition may include a thickening agent to achieve a selected viscosity and a neutralizing agent to adjust the pH and a carrier to help provide selected consistency and potency. The dental bleaching compositions may be adapted to be loaded into and delivered from a syringe.

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