title: A quantitative comparison of traditional and non-peroxide bleaching agents.
abstract: Single-rooted premolar teeth, stained with blood utilizing the technique devised by Freccia & Peters (1981), were subjected to traditional and non-peroxide bleaching agents. Colour changes were recorded over a period of 7 days using a Speedmaster R75-CP Reflection Densitometer. The most efficient removal of staining occurred after the application of 30% hydrogen peroxide, with sodium perborate being 75% as effective. All bleaching agents realized their optimum efficacy within the first 3 days. A combination of three enzymes (amylase, lipase and trypsin) with disodium edetate was not as effective as the routine bleaching agents; however, the combination did have a modifying effect on the blood stains. It is suggested that other non-peroxide agents should be investigated to determine their efficacy in removing staining from experimentally induced blood-stained teeth.
authors.affiliation: Department of Dentistry, University of Adelaide, South Australia.
authors.forename: P D
authors.initials: PD
authors.lastname: Marin
authors.forename: G S
authors.initials: GS
authors.lastname: Heithersay
authors.forename: T E
authors.initials: TE
authors.lastname: Bridges
mesh_terms: D000293:Adolescent; D001641:Bicuspid; D001881:Borates / Q000494:pharmacology; D002614:Chelating Agents / Q000494:pharmacology; D002648:Child; D003116:Color; D003720:Densitometry; D003743:Dental Enamel / Q000187:drug effects; D004798:Enzymes / Q000494:pharmacology; D006801:Humans; D006861:Hydrogen Peroxide / Q000494:pharmacology; D014073:Tooth Bleaching / Q000379:methods*; D014075:Tooth Discoloration / Q000628:therapy*
chemical_list: D001881:Borates; D002614:Chelating Agents; D004798:Enzymes; D006861:Hydrogen Peroxide; C027707:sodium perborate