It is normal to have unevenly colored teeth after bleaching, but that depends on the extent to which it occurs. With time, the color will appear more even. Yet, the reason for uneven color may be what you do. The first thing to do is avoid many common mistakes people make post-bleaching, such as consuming products known to stain teeth like wine, coffee, soy sauce, coke, and so on.
It comes down to this – anything that will stain a white garment will stain your teeth as well. If coffee is something you cannot do without, you may have it in a way that will not stain your teeth, like drinking it through a straw. The length of time, over which you will have to be careful about what you eat and drink varies. You have to talk to your dentist about the specifics of this.
The cosmetic dentistry procedure sometimes produces an uneven effect – some areas of the teeth become whiter. A number of causes have been associated with this. For example you might have been applying the whitening solution improperly. If you are buying tray-free generic materials from the drugstore, they lack the facility to stop the solution from pooling in one area and leave other parts of the tooth untouched. This is what causes uneven color. To prevent it from occurring, you may opt for a custom fitting tray. You can ask your dentist to recommend one. You may be left with splotchy teeth, and this will be an unfortunate result of your teeth whitening efforts.
Other bleaching means that leave your teeth with a splotchy color are whitening strips, which touch some parts of the teeth and escape others. In Canada, dentists prepare custom trays which are suitable for the specific structure and form of your teeth. Custom trays are fitted with a reservoir of certain thickness which controls the solution to be applied in the place where the incision is made and at the gum line. The result is a more uniform and even color. You also have to keep in mind that fillings, bridges and other artificial structures will not whiten; so, do not expect them to. You may consider asking your dentist to replace your fillings so that they match the white color of your teeth.
Another reason for uneven color may be the structure of your teeth preventing uniform color from developing. This can happen because as the gums go down on a tooth, the white part becomes visible and the enamel thins out more and more. Some teeth have yellow roots which will also show. If that is the case, you may ask your dentist to place a white filling or a veneer to cover the root. This way, the full set of teeth will be a brilliant, uniform white. Moreover, it is not as much work as it sounds!
Our teeth discoloration guide, will assist you in finding more about teeth whitening.