title: Clinical comparison between the bleaching efficacy of 37% peroxide carbamide gel mixed with sodium perborate with established intracoronal bleaching agent.
abstract: OBJECTIVE
  The aim was to evaluate the bleaching efficacy of sodium perborate/37% carbamide peroxide paste and traditional sodium perborate/distilled water for intracoronal bleaching.
  
  
  METHODS
  Thirty patients with dark anterior teeth were divided into 2 groups (n = 15): group A: sodium perborate/distilled water; and group B: sodium perborate/37% carbamide peroxide paste. The bleaching treatment limited each patient to the maximum of 4 changes of the bleaching agent. Initial and final color shades were measured using the Vita Lumin shade guide.
  
  
  RESULTS
  Data was analyzed with Wilcoxon test for initial and final comparison according to the bleaching agent, demonstrating efficacy of the bleaching treatment with both agents. Mann-Whitney test was used for comparison of the efficacy of the bleaching agents, showing that there was no significant difference between them.
  
  
  CONCLUSIONS
  The sodium perborate/37% carbamide peroxide association for intracoronal bleaching has proven to be as effective as sodium perborate/distilled water.
authors.affiliation: Cruzeiro do Sul University, Universidade Cruzeiro do Sul-Odontologia, Av. Dr. Ussiel Cirilo 225, São Paulo-SP, Brazil. wansouzazaroni@gmail.com
authors.forename: Wanessa Christine
authors.initials: WC
authors.lastname: de Souza-Zaroni
authors.forename: Eduardo Biaggioni
authors.initials: EB
authors.lastname: Lopes
authors.forename: Juliane Cristina
authors.initials: JC
authors.lastname: Ciccone-Nogueira
authors.forename: Regina Célia S P
authors.initials: RC
authors.lastname: Silva
mesh_terms: D000293:Adolescent; D000328:Adult; D001881:Borates / Q000627:therapeutic use*; D000077463:Carbamide Peroxide; D004311:Double-Blind Method; D004338:Drug Combinations; D005260:Female; D005782:Gels; D006801:Humans; D008297:Male; D008875:Middle Aged; D016877:Oxidants / Q000627:therapeutic use*; D010545:Peroxides / Q000627:therapeutic use*; D018709:Statistics, Nonparametric; D014073:Tooth Bleaching / Q000379:methods*; D019553:Tooth, Nonvital; D014508:Urea / Q000031:analogs & derivatives* / Q000627:therapeutic use; D014867:Water; D055815:Young Adult
chemical_list: D001881:Borates; D004338:Drug Combinations; D005782:Gels; D016877:Oxidants; D010545:Peroxides; D014867:Water; D000077463:Carbamide Peroxide; D014508:Urea; C027707:sodium perborate