Teeth whitening Sheffield - Laser Teeth Whitening Sheffield - Tooth Whitening Dentist Sheffield South Yorkshire - Home Whitening Kits
Teeth whitening Sheffield - Laser Teeth Whitening Sheffield - Tooth Whitening Dentist Sheffield South Yorkshire - Home Whitening Kits
Research has shown that one of the first things people notice
when they meet someone new is their smile.
Hydrogen peroxide and carbamide peroxide (also known as urea peroxide) are the most common bleaching agents used for teeth whitening by dentists. The main and active ingredient in carbamide peroxide is hydrogen peroxide. This ingredient has the effect of oxidizing stains, which leaves teeth looking whiter. There are many products and procedures which make use of carbamide peroxide. Hydrogen peroxide deteriorates rapidly in the store/dentist shelves and is active for 30 - 60 minutes on release. Carbamide peroxide is more stable, and breaks down to about one third hydrogen peroxide, so an 18% carbamide peroxide solution has a similar effect to a 6% hydrogen peroxide solution.
The actual formula conversion is;
1% hydrogen peroxide is equivalent to 2.765% carbamide peroxide:
1% H2O2 = 2.765% carbamide peroxide
or
% carbamide peroxide = % H2O2 x 2.765
and the reverse:
1% carbamide peroxide = 0.361% H2O2
or
% H2O2 = % carbamide peroxide /2.765
Most tooth whiteners use one of two chemical agents: carbamide peroxide or hydrogen peroxide. When used in the mouth, carbamide peroxide breaks down into hydrogen peroxide and urea, with hydrogen peroxide being the active whitening ingredient. After adding urea, it becomes more stable and releases about 50% of its active ingredient in the first two hours. The rest is released over the next few hours. Hydrogen peroxide bleaching gel is mainly used by dentists for short one hour in-office chair-side treatments. Carbamide peroxide is generally used in at home whitening kits over longer periods.
Chlorine Dioxide (ClO2) Gel will oxidize difficult tooth stains. This formula may be best used with a continuous UV whitening light. All precautions that are standard with hydrogen peroxide treatments are relevant to Chlorine Dioxide, although the gums are less affected by ClO2. Chlorine dioxide used for teeth whitening is the UK is gaining popularity, it is generally less harsh than the mentioned peroxide treatments.
