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Effectiveness of carbamide peroxide and sodium perborate in non-vital discolored teeth
Valera, Marcia Carneiro; Camargo, Carlos Henrique Ribeiro; Carvalho, Cláudio Antonio Talge; Oliveira, Luciane Dias de; Camargo, Samira Esteves Afonso; Rodrigues, Cristiana Martins.
  • Valera, Marcia Carneiro; s.af
  • Camargo, Carlos Henrique Ribeiro; s.af
  • Carvalho, Cláudio Antonio Talge; s.af
  • Oliveira, Luciane Dias de; s.af
  • Camargo, Samira Esteves Afonso; s.af
  • Rodrigues, Cristiana Martins; s.af
J. appl. oral sci ; 17(3): 254-261, May-June 2009. ilus, tab
Article in English | LILACS | ID: lil-514044
Responsible library: BR1.1
ABSTRACT

Objective:

To evaluate the efficacy of 16% carbamide peroxide gel (CP16%), tetrahydrate sodium perborate (SP) and mixture (CP16% + SP), in walking bleaching of non-vital discolored teeth. Materials and

methods:

Sixty single-rooted human premolars with intact crowns were used and initial color was assessed using Vita shade guide and standardized photos. The teeth were stained using rabbit fresh blood for 18 days and photos of discolored teeth and color evaluation were performed. The teeth were divided into 4 groups (n= 15), according to bleaching agent used G1) CP16% gel; G2) CP16% gel + SP; G3) SP + distilled water; G4 control.The bleaching agents were replaced twice at 7-day intervals for 21 days. All teeth were evaluated by two endodontists at days 0, 7, 14 and 21 and the color changes were assessed using Vita shade guide and standardized photos. The results were analyzed byKruskal-Wallis and Dunn’s tests (p=0.05).

Results:

The experimental groups presented statistically similar bleaching results (p>0.05) at the end of 7, 14 and 21 days. These groups presented significantly higher bleaching efficacy than control group (G4) (p<0.05). The mixture CP16% + SP promoted return of original color in 100% of teeth at the end of 21 days.

Conclusion:

It was concluded that three bleaching agents were effective in bleaching of stained teeth with blood products, especially at the end of 21 days.
Subject(s)
Full text: Available Index: LILACS (Americas) Main subject: Peroxides / Tooth Bleaching / Tooth Discoloration / Urea / Borates / Oxidants / Tooth, Nonvital Type of study: Evaluation studies Limits: Animals / Humans Language: English Journal: J. appl. oral sci Journal subject: Dentistry Year: 2009 Type: Article

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Full text: Available Index: LILACS (Americas) Main subject: Peroxides / Tooth Bleaching / Tooth Discoloration / Urea / Borates / Oxidants / Tooth, Nonvital Type of study: Evaluation studies Limits: Animals / Humans Language: English Journal: J. appl. oral sci Journal subject: Dentistry Year: 2009 Type: Article