Tray-like dental bleaching devices having a barrier layer and a substantially solid bleaching composition
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A61C-015/00
A61K-009/20
출원번호
US-0446235
(2003-05-27)
발명자
/ 주소
Allred,Peter M.
Jessop,Neil T.
출원인 / 주소
Ultradent Products, Inc.
대리인 / 주소
Workman Nydegger
인용정보
피인용 횟수 :
11인용 특허 :
89
초록▼
Dental bleaching devices in the shape of a dental tray or tray-like form include an outer barrier layer and an inner bleaching layer. The bleaching layer comprises a substantially solid dental bleaching composition that has increased adhesiveness to teeth when moistened with saliva or water. The sh
Dental bleaching devices in the shape of a dental tray or tray-like form include an outer barrier layer and an inner bleaching layer. The bleaching layer comprises a substantially solid dental bleaching composition that has increased adhesiveness to teeth when moistened with saliva or water. The shape of the dental bleaching device facilitates placement of the device over a person's teeth with substantially less manipulation compared to the use of initially flat bleaching strips. The substantially solid dental bleaching composition becomes more adhesive when moistened with saliva or water, yet remains intact and coherent after the dental bleaching device is placed over a person's teeth during bleaching. The result is that the moistened dental bleaching composition is able to reliably adhere the dental bleaching device against a user's teeth during a bleaching procedure. However, because a substantial portion of the dental bleaching composition remains solid or semi-solid during bleaching, the bleaching composition maintains a substantial portion of its adhesive properties and internal cohesive strength.
대표청구항▼
What is claimed is: 1. A dental bleaching device in the shape of a dental tray suitable for placement over a person's teeth in order to carry out dental bleaching, comprising: a barrier layer comprising a moisture-resistant material in the shape of a dental tray comprising a front side wall, a rear
What is claimed is: 1. A dental bleaching device in the shape of a dental tray suitable for placement over a person's teeth in order to carry out dental bleaching, comprising: a barrier layer comprising a moisture-resistant material in the shape of a dental tray comprising a front side wall, a rear side wall, and a trough between said front and rear side walls; and a bleaching layer within said trough comprising a substantially solid dental bleaching composition having a first surface adjacent to said barrier layer and a second surface that has increased adhesiveness to teeth when moistened by saliva or water, said bleaching layer being in the shape of a dental tray and having a rigidity so as to at least partially contribute to maintaining said dental bleaching device in the shape of a dental tray piror to placing said bleaching device over a person's teeth, said dental bleaching composition comprising: at least one dental bleaching agent; and at least one tooth adhesion agent that at least partially contributes to said increased adhesiveness to teeth when said dental bleaching composition is moistened by saliva or water. 2. A dental bleaching device as defined in claim 1, said bleaching layer comprising a single coherent mass in the shape of a dental tray comprising a front side wall, a rear side wall, and a trough between said front and rear side walls. 3. A dental bleaching device as defined in claim 1, said bleaching layer contributing more to maintaining said dental bleaching device in the shape of a dental tray than said barrier layer prior to use. 4. A dental bleaching device as defined in claim 1, said barrier layer being flexible so that it will readily conform to the shape of a person's teeth when said dental bleaching device is in use. 5. A dental bleaching device as defined in claim 1, said bleaching layer comprising a plurality of spaced-apart coherent masses. 6. A dental bleaching device as defined in claim 1, said barrier layer having a rigidity so as to at least partially contribute to maintaining said dental bleaching device in the shape of a dental tray prior to placing said bleaching device over a person's teeth. 7. A dental bleaching device as defined in claim 6, said barrier layer contributing more to maintaining said dental bleaching device in the shape of a dental tray than said bleaching layer prior to and during use. 8. A dental bleaching device as defined in claim 1, said barrier layer being inilially horseshoe shaped prior to use so that said dental bleaching device at least approximately conforms to a person's dental arch with minimal longitudinal shaping. 9. A dental bleaching device as defined in claim 1, said barrier layer initially having a longitudinal curvature that is less than the curvature of a person's dental arch prior to use so that additional longitudinal curving of said dental bleaching device is required what said dental bleaching device is placed over a person's teeth. 10. A dental bleaching device as defined in claim 1, said barrier layer initially having a substantially straight/longitudinal profile prior to use so that longitudinal curving of said dental bleaching duvice is required when said dental bleaching device is placed over a person's teeth. 11. A dental bleaching device as defined in claim 1, at least a portion of said trough having an approximate U-shaped cross section. 12. A dental bleaching device as defined in claim 1, at least a portion of said trough having an approximate V-shaped cross section. 13. A dental bleaching device as defined in claim 1, at least a portion of said trough having an approximate L-shaped cross section. 14. A dental bleaching device as defined in claim 1, at least a portion of said trough having approximately a rectangular or trapezoidal cross section. 15. A dental bleaching device as defined in claim 1, said barrier layer comprising at least one polyolefin. 16. A dental bleaching device as defined in claim 15, said polyolefin comprising at least one of polyethylene, high density polyethylene, low density polyethylene, ultra-low density polyethylene, polypropylene, or polytetrafluoroethylene. 17. A dental bleaching device as defined in claim 1, said barrier layer comprising at least one of wax, metal foil, paraffin, ethylene-vinyl acetate copolymer, ethylene-vinyl alcohol copolymer, polycaprolactone, polyester, polycarbonate, polyurethane, polyamide, or polyesteramide. 18. A dental bleaching device as defined in claim 1, said dental bleaching agent comprising at least one of carbamide peroxide, metal peroxide, percarbonate, perborate, peroxy acid, peroxy acid salt, chlorite, or hypochlorite. 19. A dental bleaching device as defined in claim 1, said dental bleaching agent having a concentration in a range of about 5% to about 80% by weight of said dental bleaching composition. 20. A dental bleaching device as defined in claim 1, said dental bleaching agent having a concentration in a range of about 10% to about 60% by weight of said dental bleaching composition. 21. A dental bleaching device as defined in claim 1, said dental bleaching agent having a concentration in a range of about 20% to about 50% by weight of said dental bleaching composition. 22. A dental bleaching device as defined in claim 1, said tooth adhesion agent comprising polyvinyl pyrrolidone. 23. A dental bleaching device as defined in claim 1, said tooth adhesion agent comprising at least one or carboxypolymethylene, polyethylene oxide, polyacrylic acid, copolymer of polyacrylic acid, polyacrylate, polyacrylamide, copolymer of polyacrylic acid and polyacrylamide, PVP-vinyl acetate copolymer, carboxymethylcellulose, carboxypropylcellulose, polysaccharide gum, or protein. 24. A dental bleaching device as defined in claim 1, said tooth adhesion agent having a concentration in a range of about 10% to about 90% by weight of said dental bleaching composition. 25. A dental bleaching device as defined in claim 1, said tooth adhesion agent having a concentration in a range of about 20% to about 80% by weight of said dental bleaching composition. 26. A dental bleaching device as defined in claim 1, said tooth adhesion agent having a concentration in a range of about 40% to about 75% by weight of said dental bleaching composition. 27. A dental bleaching device as defined in claim 1, said dental bleaching composition further comprising at least one non-volatile solvent. 28. A dental bleaching device as defined in claim 1, wherein said dental bleaching device is sized and configured so as to fit over at least a portion of a person's upper dental arch. 29. A dental bleaching device as defined in claim 1, wherein said dental bleaching device as sized and configtued so as to fit over at least a porlion of a person's lower dental arch. 30. A dental bleaching device as defined in claim 1, wherein said barrier layer has a cross-sectional thickness in a range of about 0. 025 mm to about 1.5 mm. 31. A dental bleaching device as defined in claim 1, wherein said bleaching layer has a cross-seclional thickness in a range of about 0.1 mm to about 3 mm. 32. A dental bleaching device as defined in claim 31, wherein said bleaching layer has a cross-sectional thickness in a range of about 0.1 mm to about 0.5 mm. 33. A dental bleaching device as defined in claim 31, wherein said bleaching layer has a cross-sectional thickness in a range of about 0.5 mm to about 2 mm. 34. A dental bleaching device as defined in claim 31, wherein said bleaching layer has a cross-sectional thickness in a range of about 2 mm to about 3 mm. 35. A dental bleaching device as defined in claim 1, wherein said barrier layer is sized and configured so as to approximately terminate at or near a person's gingival margin when said dental bleaching device is in use. 36. A dental bleaching device as defined in claim 1, wherein said dental bleaching device is contained within a scaled package prior to use. 37. A kit for use in bleaching a person's teeth comprising a plurality of dental bleaching devices according to claim 1. 38. A kit as defined in claim 37, wherein at least some of said dental bleaching devices are stacked and internested together. 39. A kit as defined in claim 37, wherein said kit includes from 3 to 10 dental bleaching devices. 40. A method for bleaching a person's teeth comprising obtaining a dental bleaching device according to claim 1 and then placing said dental bleaching device over at least a poition of the person's teeth for a desired time period. 41. A dental bleaching device in the shape of a dental tray suitable for placement over a person's teeth in order to carry out dental bleaching, comprising: a thin, flexible barrier layer comprising a moisture-resistant material; and a bleaching layer adjacent said barrier layer and comprising a substantially solid dental bleaching composition in the shape of a dental tray comprising a front side wall, a rear side wall, and a trough between said front and rear side walls, the bleaching layer having a rigidity so that said bleaching layer contributes more to maintaining said dental bleaching device in the shape of a dental tray prior to use than said barrier layer, said bleaching composition having increased adhesiveness to teeth when moistened by saliva or water, said bleaching composition comprising: at least one dental bleaching agent; and at least one tooth adhesion agent that at least partially contributes to said increased adhesiveness to teeth when said dental bleaching composition is moistened by saliva or water. 42. A dental bleaching device as defined in claim 41, at least a portion of said trough having a cross section that is approximately U-shaped, V-shaped, L-shaped, rectangular, or trapezoidal. 43. A dental bleaching device in the shape of a dental tray suitable for placement over a person's teeth in order to carry out dental bleaching, comprising: a barrier layer comprising a moisture-resistant polymeric material in the shape of a dental tray comprising a front side wall, a rear side wall, and a trough between said front and rear side walls; and a bleaching layer within said trough comprising a substantially solid dental bleaching composition having a first surface adjacent to at least one of said front side wall or rear side wall and a second surface that has increased adhesiveness to teeth when moistened by saliva or water, said bleaching layer having a rigidity so as to at least partially contribute in maintaining said dental bleaching device in the shape of a dental tray prior to placing said bleaching device over a person's teeth said dental bleaching composition comprising: at least one dental bleaching agent; and at least one tooth adhesion agent that at least partially contributes to said increased adhesiveness to teeth when said dental bleaching composition is moistened by saliva or water. 44. A dental bleaching device as defined in claim 43, at least a potion of said trough having a cross section that is approximately U-shaped, V-shaped, L-shaped, rectangular, or trapezoidal. 45. A method for bleaching a person's teeth, comprising: (a) obtaining a dental bleaching device in the shape of a dental tray comprising a front side wall, a rear side wall, and a trough between said front and rear side walls, the dental bleaching device further comprising: an outer barrier layer comprising a moisture-resistant material; and a bleaching layer comprising a substantially solid dental bleaching composition having increased adhesiveness to teeth when moistened by saliva or water, said bleaching layer having a rigidity so as to at least partially contribute in maintaining said dental bleaching device in the shape of a dental tray prior to placing said bleaching device over a person's teeth, said dental bleaching composition comprising: at least one dental bleaching agent; and at least one tooth adhesion agent that at least partially contributes to said increased adhesiveness to teeth when said dental bleaching composition is moistened by saliva or water; (b) moistening an exposed surface of said bleaching layer so as to increase adhesiveness of said bleaching layer to teeth; and (c) placing said dental bleaching device over at least a portion of the person's teeth for a desired time period, the moistened bleaching layer adhering and retaining said dental bleaching device against the person's teeth during the desired time period. 46. A method for bleaching a person's teeth as defined in claim 45, wherein (b) is performed by applying water or an aqueous solution to said exposed surface. 47. A method for bleaching a person's teeth as defined in claim 45, wherein (b) is performed by allowing residual saliva on the person's teeth to moisten said exposed surface as the dental bleaching device is placed over the person's teeth. 48. A method for bleaching a person's teeth as defined in claim 45, further comprising removing said dental bleaching device and any remaining dental bleaching composition. 49. A method for bleaching a person's teeth as defined in claim 48, said dental bleaching device being removed about 10 to about 30 minutes after being placed over the person's teeth. 50. A method for bleaching a person's teeth as defined in claim 48, said dental bleaching device being removed about 30 minutes to about 2 hours after being placed over the person's teeth. 51. A method for bleaching a person's teeth as defined in claim 48, said dental bleaching device being removed about 2 hours to about 12 hours after being placed over the person's teeth. 52. A method for bleaching a person's teeth as defined in claim 45, at least a portion of said trough of said dental bleaching device having a cross section that is approximately U-shaped, V-shaped, L-shaped, rectangular, or trapezoidal. 53. A dental bleaching device as defined in claim 43, said barrier layer having a rigidity so that said barrier layer contributes more to maintaining said dental bleaching device in the shape of a dental tray prior to use than said bleaching layer.
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