초록 ▼

The present invention relates to improved dental compositions and methods for bleaching teeth. More specifically, this invention is directed towards hydrogen peroxide-containing compounds that are maintained at a substantially constant pH range of 6.0-10.0 during the tooth-bleaching procedure in the

The present invention relates to improved dental compositions and methods for bleaching teeth. More specifically, this invention is directed towards hydrogen peroxide-containing compounds that are maintained at a substantially constant pH range of 6.0-10.0 during the tooth-bleaching procedure in the presence of a calcium chelating agent.

대표청구항 ▼

[ I claim:] [1.]1. A single exit dual compartment squeeze tube with a static mixer, whose compartments are adapted to keep apart two formulations and whose two compartments respectively include:a first formulation comprising a hydrogen peroxide precursor compound selected from the group consisting o

[ I claim:] [1.]1. A single exit dual compartment squeeze tube with a static mixer, whose compartments are adapted to keep apart two formulations and whose two compartments respectively include:a first formulation comprising a hydrogen peroxide precursor compound selected from the group consisting of an alkali metal percarbonate, carbamide peroxide, calcium peroxide, and an alkali metal perborate, a thickener, a carrier and a calcium chelating agent wherein the first formulation is substantially free of an alkaline pH adjusting agent and is substantially free of water; anda second formulation comprising an alkaline pH-adjusting agent selected from the group consisting of alkali metal hydroxides, ammonium hydroxide, alkali metal carbonates, TRIS, and triethanolamine, a carrier and a thickener wherein the second formulation is substantially tree of the hydrogen peroxide precursor compound; whereby squeezing the tube forces material from each compartment through the static mixer to form a thickened, aqueous, substantially bicarbonate free, and substantially abrasive free hydrogen peroxide containing mixture before emerging from the single exit in the tube, wherein the mixture has a range of pH between approximately 6 and approximately 10.