Carbamide Peroxide Whitening Gel

Time robs teeth enamel of its milky white color and appearance. Teeth change color from white to yellow to brown. This happens due to a substantial change of the mineral structure of teeth over a period of time. The restoration of that glowing bright white smile is possible today with teeth bleaching agents. Carbamide peroxide whitening gel is one such agent, which is widely used. This Buzzle article discusses many factors connected with this product, its effectiveness and the precautions that need to be taken while using it.

What is Carbamide Peroxide?
Also known as urea hydrogen peroxide, urea peroxide or percarbamide, this is a strong oxidizing agent. It forms from a reaction between hydrogen peroxide (H₂O₂) and Urea ((NH₂)₂CO). The chemical formula of crystalline white compound is CH₆N₂O₃. This chemical has the property that it releases oxygen when it comes is contact with water. Exposure to high concentrations of this chemical can cause corrosion and burns. It is a respiratory, eye and skin irritant. However, at low concentrations, it can be safely used as a teeth whitening agent when it is combined with hydrogen peroxide. It has been effectively used in cosmetic dentistry as for many years. Carbamide peroxide teeth whitening gels contain a varied concentration ranging from 10% to 35%. This chemical is widely used to loosen and remove earwax, as well as treat ulcers.

How does it Work?
An application of this type of teeth whitening can achieve good and long-lasting results. How does it work? The enamel has a rod like crystal structure which has porosities inside. These porosities are penetrated by the oxidizing agent like carbamide peroxide whitening gel and the oxidization of interprismatic stain deposits is effectively achieved. Enamel is semi-translucent and therefore, the underlying dentin layer under the enamel affects the coloring of the tooth. The oxidizing agent penetrates and bleaches this underlying dentin layer too, leading to overall whitening of the teeth. The whitening can last for several months but it all depends on the lifestyle of the person. Frequent consumption of dark liquids like tea and coffee can also decrease the effect of this whitening gel.

How is it Applied?
This gel easily available at medical stores now or can be even purchased online. It can achieve a high quality bleaching of teeth at home. Of all the teeth whitening methods, this one is the simplest. Using thin plastic trays, this gel is applied to teeth in short time periods. Custom-made whitening trays can increase the effectiveness of the bleaching. The trays can prevent the exposure of the gel with the gums. The application trays of this whitening gel need to be fitted properly, so that the teeth undergo an even and substantial exposure. The trays filled with the whitening gel are applied for short bursts of 15 - 20 minutes for two or three times. The gel gets converted into hydrogen peroxide on application in the mouth and achieves the bleaching effect. The recommended concentration level of the gel is 15%.

This bleaching treatment can have side effects. It may cause tooth sensitivity and irritation of soft tissues in the gums. However, these effects last only for two to three days. Personally, I recommend that it will be better if you consult a dentist before using any whitening gel product at home, for safety reasons.