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US 11,026,868 B2Granted
Patch for tooth attachment able to be removed by tooth brushing
AssigneeLG Household & Health Care Ltd.
InventorsJong-Hoon Kim, Jae-Hyun Ahn, Kwang-Ho Oh, In-Ho Lee, Woo-Sun Shim
Life of this patent
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Abstract
The present invention provides a patch for attaching to teeth or a surrounding part of teeth, and the patch can be easily removed by tooth brushing alone.
Claims17
A method for using a patch for attaching to teeth or a surrounding part of teeth,
- comprising:
- attaching a patch to teeth or a surrounding part of teeth, and
- removing the patch after moisture absorption by tooth brushing,
- wherein the patch comprises:
- a drug layer including a drug component;
- and
- a backing layer which is positioned on one side of the drug layer,
- wherein the backing layer includes a water-soluble polymer and water-insoluble polymer,
- wherein the water-insoluble polymer is at least one selected from the group consisting of cellulose acetate phthalate, shellac, polyvinyl acetate, ethyl cellulose, polymethyl methacrylate, methacryloyl ethyl betaine/methacrylate copolymer, methacrylic acid copolymer and aminoalkyl methacrylate copolymer, and
- the water-soluble polymer is at least one selected from the group consisting of polyalkyl vinyl ether-maleic acid copolymer (PVM/MA copolymer), polyvinyl alcohol, polyacrylic acid, Poloxamer 407, polyethyleneoxide (Polyox), polyvinyl pyrrolidone-vinyl acetate copolymer (PVP/VA copolymer), polyvinyl pyrrolidone (PVP), polyquaternium-11, polyquaternium-39, carboxypolymethylene (Carbomer), hydroxypropyl methyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, gelatin and sodium alginate, and
- wherein the patch backing layer is capable of being degraded, dispersed into particles and detached by tooth brushing.
8 more elements
A method for using a patch for attaching to teeth or a surrounding part of teeth, comprising:
- attaching a patch to teeth or a surrounding part of teeth, and
- removing the patch after moisture absorption by tooth brushing,
- wherein the patch comprises:
- a drug layer attached to teeth or a surrounding part of teeth;
- and
- a backing layer which is positioned on one side of the drug layer,
- wherein the patch backing layer is capable of being degraded, dispersed into particles and detached by tooth brushing,
- wherein the backing layer has a static contact angle which varies over time.
5 more elements
A method for using a patch for attaching to teeth or a surrounding part of teeth, comprising:
- attaching a patch to teeth or a surrounding part of teeth, and
- removing the patch after moisture absorption by tooth brushing,
- wherein the patch comprises
- a drug layer in contact with teeth or a surrounding part of teeth;
- and
- a backing layer positioned on one side of the drug layer,
- wherein the backing layer is capable of being degraded, and detached by tooth brushing,
- wherein the backing layer includes a polymer having solubility parameter (δ1) of 5 (MPa)1/2 to 22 (MPa)1/2;
- and a polymer having solubility parameter (δ2) of 23.5 (MPa)1/2 to 40 (MPa)1/2.
6 more elements
Dependencies are inferred from the claim text.