title: Development of surface coating material for discolored tooth equipped with bleaching effect.
abstract: It is attempted to augment a coating resin with a bleaching effect to provide both short- and long-term whitening effects. Base resin containing sodium percarbonate (SPC) effectively bleached bovine teeth discolored by the Maillard reaction. SPC did not reduce Vickers hardness, but hardness in the hybrid material increased. The shear bonding strength of SPC-containing resin was low. No inflammation was apparent in hamster cheek pouch mucosa when exposed to SPC resin covered with a layer of base resin. H(2)O(2) was released into buffer from this resin, but when placed onto tooth tissue with a protective layer of base resin, penetration of H(2)O(2) into the pulp chamber was undetectable. It is concluded that SPC resin equipped with a bleaching aid can be safely used as a coating material for discolored teeth.
authors.affiliation: Department of Restorative Dentistry and Endodontology, Graduate School of Medical and Dental Sciences, Kagoshima University, 8-35-1 Sakuragaoka, Kagoshima, Japan.
authors.forename: Makiko
authors.initials: M
authors.lastname: Emoto
authors.forename: Koichi
authors.initials: K
authors.lastname: Tomita
authors.forename: Norikazu
authors.initials: N
authors.lastname: Kanemaru
authors.forename: Masayuki
authors.initials: M
authors.lastname: Tokuda
authors.forename: Mitsuo
authors.initials: M
authors.lastname: Torii
mesh_terms: D000818:Animals; D001585:Benzoyl Peroxide / Q000627:therapeutic use; D017438:Bisphenol A-Glycidyl Methacrylate / Q000737:chemistry; D001881:Borates / Q000627:therapeutic use; D000077463:Carbamide Peroxide; D002254:Carbonates / Q000737:chemistry; D002417:Cattle; D020099:Coated Materials, Biocompatible / Q000737:chemistry*; D003116:Color; D003124:Colorimetry; D006224:Cricetinae; D001840:Dental Bonding; D003743:Dental Enamel / Q000187:drug effects; D003782:Dental Pulp / Q000187:drug effects; D004337:Drug Carriers; D006244:Hardness; D006861:Hydrogen Peroxide / Q000737:chemistry; D055115:Light-Curing of Dental Adhesives; D008297:Male; D008647:Mesocricetus; D009061:Mouth Mucosa / Q000187:drug effects; D010545:Peroxides / Q000627:therapeutic use; D011109:Polymethacrylic Acids / Q000737:chemistry; D033081:Shear Strength; D013314:Stress, Mechanical; D013447:Sulfites / Q000627:therapeutic use; D014073:Tooth Bleaching / Q000379:methods; D058205:Tooth Bleaching Agents / Q000737:chemistry / Q000627:therapeutic use*; D014075:Tooth Discoloration / Q000188:drug therapy*; D014508:Urea / Q000031:analogs & derivatives / Q000627:therapeutic use
chemical_list: D001881:Borates; D002254:Carbonates; D020099:Coated Materials, Biocompatible; D004337:Drug Carriers; C472989:Megabond self-etching primer; D010545:Peroxides; D011109:Polymethacrylic Acids; D013447:Sulfites; D058205:Tooth Bleaching Agents; D000077463:Carbamide Peroxide; D017438:Bisphenol A-Glycidyl Methacrylate; C005200:sodium metabisulfite; D014508:Urea; D006861:Hydrogen Peroxide; D001585:Benzoyl Peroxide; C027707:sodium perborate; C034738:sodium percarbonate