title: Modified internal bleaching of severe tetracycline discoloration: a 6-year clinical evaluation.
abstract: Since 1985, 534 severely discolored teeth have been treated with intentional endodontics and internal bleaching; of these, 258 were treated with the conventional technique and 276 were treated with the modified technique. Six years of clinical and radiographic evaluation revealed that the results obtained with the first group (conventional technique) remain stable and that a very noticeable improvement has been achieved with the second group of teeth, treated with the modified technique.
authors.forename: E A
authors.initials: EA
authors.lastname: Aldecoa
authors.forename: F G
authors.initials: FG
authors.lastname: Mayordomo
mesh_terms: D000293:Adolescent; D000328:Adult; D001881:Borates / Q000627:therapeutic use; D000077463:Carbamide Peroxide; D004338:Drug Combinations; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D006861:Hydrogen Peroxide / Q000627:therapeutic use; D010545:Peroxides / Q000627:therapeutic use; D012389:Root Canal Obturation; D012390:Root Canal Therapy; D013754:Tetracyclines / Q000009:adverse effects; D014073:Tooth Bleaching / Q000379:methods*; D014075:Tooth Discoloration / Q000139:chemically induced / Q000628:therapy*; D014508:Urea / Q000031:analogs & derivatives / Q000627:therapeutic use
chemical_list: D001881:Borates; D004338:Drug Combinations; D010545:Peroxides; D013754:Tetracyclines; D000077463:Carbamide Peroxide; D014508:Urea; D006861:Hydrogen Peroxide; C027707:sodium perborate