Tooth Bleaching for Young Patients Using a Hydrogen Peroxide-based Gel
Condition: Tooth Discoloration
MeSH terms: Tooth Discoloration
Study type: Interventional

Summary: 
      The aim of the present study was to evaluate colorimetric changes and tooth sensitivity in
      young patients submitted to tooth bleaching with 20% and 35% hydrogen peroxide.
    

Detailed description: 
      A randomized, controlled, clinical trial was conducted with 53 patients aged 11 to 24 years
      who were allocated to groups based on the use of the following commercial products: Whiteness
      HP - FGM® (35% hydrogen peroxide); Whiteness HP Blue Calcium - FGM® (35% hydrogen peroxide);
      and Whiteness HP Blue Calcium - FGM® (20% hydrogen peroxide).

      After the bleaching procedure, the visual analog scale was used to measure tooth sensitivity
      and the classic Vita® scale was used to determine changes in tooth color.

      Statistical analysis involved the Friedman, Kruskal-Wallis and Student-Newman-Keuls tests,
      with p-value ≤ 0.05 or ≤ 0.0001 considered indicative of statistical significance.
    

Intervention name(s): 35% hydrogen peroxide; 35% hydrogen peroxide; 20% hydrogen peroxide
Intervention type(s): Other; Other; Other
Intervention description(s): Prophylaxis was performed with a jet of sodium bicarbonate to remove extrinsic pigments and plaque.
Each patient underwent two bleaching sessions. A lip retractor (Arc Flex, FGM®) was placed. Cotton roles or gauze compresses were used to achieve relative isolation. A dental dam (Top Dam, FGM®) was placed over the free marginal gingival tissue and the inter-tooth papillae of teeth 14 to 24 in each session. The Whiteness HP 35% gel was applied to the vestibular faces of these teeth.
In the present study, the Whiteness HP 35% gel was applied without an external auxiliary source. As this is not a self-catalyzed system, the gel was removed after each 15-minute application and reapplied two more times, totaling 45 minutes of contact with the teeth.; Prophylaxis was performed with a jet of sodium bicarbonate to remove extrinsic pigments and plaque.
Each patient underwent two bleaching sessions. A lip retractor (Arc Flex, FGM®) was placed. Cotton roles or gauze compresses were used to achieve relative isolation. A dental dam (Top Dam, FGM®) was placed over the free marginal gingival tissue and the inter-tooth papillae of teeth 14 to 24 in each session. The Whiteness HP Blue Calcium 35% gel was applied to the vestibular faces of these teeth for 40 minutes in each session.; Prophylaxis was performed with a jet of sodium bicarbonate to remove extrinsic pigments and plaque.
Each patient underwent two bleaching sessions. A lip retractor (Arc Flex, FGM®) was placed. Cotton roles or gauze compresses were used to achieve relative isolation. A dental dam (Top Dam, FGM®) was placed over the free marginal gingival tissue and the inter-tooth papillae of teeth 14 to 24 in each session. The Whiteness HP Blue Calcium 20% gel was applied to the vestibular faces of these teeth 50 minutes in each session.
Other intervention name(s): Whiteness HP 35%; Whiteness HP Blue Calcium 35%; Whiteness HP Blue Calcium 20%
Intervention MeSH terms: Calcium, Dietary; Hydrogen Peroxide; Calcium
Allocation: Randomized
Intervention model: Parallel Assignment
Masking: None (Open Label)
Primary purpose: Treatment
Keywords: tooth bleaching; adolescent; clinical trial