Carbamide peroxide is also suitable as a disinfectant, e . g . for germ reduction on contact lens surfaces or as an antiseptic for mouthwashes, ear drops or for superficial wounds and ulcers.
22.
How it works : Clear plastic trays are made from molds of your teeth and filled, using a syringe, with various concentrations and combinations of hydrogen peroxide and carbamide peroxide in a whitening gel.
23.
Other studies indicated that the caries preventive effect of chewing sugar-free gum is related to the chewing process itself rather than being an effect of gum sweeteners or additives, such as polyols and carbamide.
24.
Urea or carbamide is an organic compound with the chemical formula ( NH 2 ) 2 CO . The molecule has two amine groups ( NH 2 ) joined by a carbonyl functional group ( C = O ).
25.
The paste, a combination of hydrogen peroxide and urea called carbamide peroxide, is placed in an individually formed mold, or tray, and that fits over the teeth and reduces exposure of the gum tissue to the irritating paste.
26.
More costly over-the-counter bleaching systems _ mouth-guard strips or trays placed on the teeth overnight _ use such chemicals as carbamide peroxide to remove tougher stains, but they can sometimes cause gum irritation or chemical burns.
27.
Home kits, which cost $ 20 or so, contain a 10 percent solution of carbamide peroxide gel ( equivalent to a 3 percent solution of hydrogen peroxide . ) The bleaching kits used in dental offices are 30 percent hydrogen peroxide or stronger.
28.
An alternative to the walking bleach procedure is the inside-out bleach where the bleaching cavity is left open and the patient issued with a custom-formed tray to place and retain the agent, typically a carbamide peroxide gel inside the cavity.
29.
NOTE : A list of ADA-accepted whitening dentrifices and 10 percent carbamide peroxide, tray-applied tooth-whitening products is available on the ADA Seal of Acceptance database ( www . ada . org / prof / prac / seal / index . html ).
30.
Weighing the risks and the advantages, the experts feel that the procedure is : a safe and effective technique if a carbamide peroxide material of up to 10 per cent made by a recognised and reputable manufacturer is used under a dentist's supervision in a relatively short-term treatment duration.
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