Oral care whitening compositions

Abstract

Described herein are whitening compositions comprising a peroxide source, and an adhesion system comprising a hydrophobic component comprising a silicone adhesive; and a dental surface adhesion enhancing agent, which are physically stable and effectively provide whitening. Methods of making and using these compositions are also described herein.

1 . A non-aqueous oral care composition comprising:
 a peroxide source in the amount effective to deliver 0.01% to 5.5% of hydrogen peroxide; and   an adhesion system comprising:
 a hydrophobic component comprising a silicone adhesive; and 
 a dental surface adhesion enhancing agent, 
   wherein the composition when applied to the teeth is sufficiently viscous to form an adherent, continuous layer on a dental surface and deliver an effective amount of said peroxide source to a tooth surface.   
     
     
         2 . The composition of  claim 1  wherein the peroxide source is selected from: hydrogen peroxide; urea peroxide, sodium percarbonate, a crosslinked polyvinylpyrrolidone-hydrogen peroxide complex; sodium perborate; and a combination of two or more thereof. 
     
     
         3 . The composition of  claim 1  wherein the peroxide source is a crosslinked polyvinylpyrrolidone-hydrogen peroxide complex. 
     
     
         4 . The composition of  claim 1 , wherein the dental surface adhesion enhancing agent comprises an additional amount of cross-linked polyvinylpyrrolidone. 
     
     
         5 . The composition of  claim 4 , wherein the additional amount of cross-linked polyvinylpyrrolidone is not complexed with a peroxide source. 
     
     
         6 . The composition of  claim 1 , wherein the peroxide source is present in an amount effective to deliver about 0.1% hydrogen peroxide. 
     
     
         7 . The composition of  claim 1 , wherein the peroxide source is present in an amount effective to deliver about 4.5% hydrogen peroxide. 
     
     
         8 . The composition of  claim 1 , wherein the silicone adhesive is a pressure sensitive silicone adhesive. 
     
     
         9 . The composition of  claim 8 , wherein the pressure sensitive silicone adhesive is a copolymer prepared by condensing a silicone resin with a dihydroxy polydiorganosiloxane. 
     
     
         10 . The composition of  claim 9 , wherein the dihydroxy polydiorganosiloxane is dihydroxy polydimethylsiloxane. 
     
     
         11 . The composition of  claim 8 , wherein the silicone resin is a silanol-containing silicone resin. 
     
     
         12 . The composition of  claim 1 , wherein the hydrophobic component further comprises a silicone fluid. 
     
     
         13 . The composition of  claim 12 , wherein the silicone fluid comprises a siloxane polymer. 
     
     
         14 . The composition of  claim 1 , wherein the adhesion system further comprises an organic material selected from: bees wax, mineral oil, a mineral oil and polyethylene blend, petrolatum, a liquid paraffin and butene/ethylene/styrene hydrogenated copolymer blend, a polyethylene wax, polyisobutene, a polyvinyl pyrrolidone/vinyl acetate copolymer; a polyacrylate; a shellac; and a combination of two or more thereof. 
     
     
         15 . The composition of  claim 14 , wherein the organic material comprises mineral oil. 
     
     
         16 . The composition of  claim 1 , wherein the dental surface adhesion enhancing agent is present in an amount of 15% to 25%, by weight, of the composition. 
     
     
         17 . The composition of  claim 1 , wherein the dental surface adhesion enhancing agent is present in the amount of 16% to 22%, by weight, of the composition. 
     
     
         18 . The composition of  claim 1 , wherein the dental surface adhesion enhancing agent is present at a concentration of 18% to 21%, by weight, of the composition. 
     
     
         19 . The composition of  claim 1 , wherein the adhesion system further comprises mineral oil; and wherein the weight percentage of mineral oil is substantially similar to, or greater than, the weight percentage of the silicone adhesive. 
     
     
         20 . The composition of  claim 1 , wherein the adhesion system further comprises mineral oil; and wherein the weight percentage of mineral oil is greater than, the weight percentage of the silicone adhesive, based on the total weight of the composition. 
     
     
         21 . The composition of  claim 1 , wherein the composition has a Hershel-Bulkley rate index of less than 0.7. 
     
     
         22 . The composition of  claim 1 , wherein the composition has a G′/G″ ratio of greater than or equal to 1 in the linear viscoelastic region. 
     
     
         23 . The composition of  claim 1 , wherein the composition has a critical strain greater than or equal to 0.02. 
     
     
         24 . A method for whitening a tooth comprising applying a composition according to any one of the foregoing claims to a tooth of a mammal. 
     
     
         25 . The method of  claim 24 , wherein the composition is applied using a pen. 
     
     
         26 . The method of  claim 24 , wherein the composition is allowed to remain on the surface of the tooth for a plurality of minutes. 
     
     
         27 . The method of  claim 24 , wherein the composition is allowed to remain on the surface of the tooth for at least 15 minutes. 
     
     
         28 . The method of  claim 24 , wherein the composition is allowed to remain on the surface of the tooth for about 30 minutes. 
     
     
         29 . The method of  claim 25 , wherein the pen is stored within an oral care implement. 
     
     
         30 . The method of  claim 29 , wherein the pen is removed from the oral care implement prior to application of the composition to the tooth. 
     
     
         31 . The method of  claim 25 , wherein the composition is applied to the tooth after brushing. 
     
     
         32 . The method of  claim 25 , wherein the composition is applied to the tooth after brushing with the oral care implement.