Unfortunately, bleaching gel will not whiten veneers because it is effective only on natural teeth. Veneers are inorganic material and made of porcelain unlike tooth enamel. So the color in that material is very stable and cannot be changed.
However, bleaching gel can clean effectively any stains acquired over a period of time and restore the original color of the veneer. It must also be mentioned that veneers tend not to pick up stains easily due to their color stability which is permanent once it is bonded to your teeth. Alternatively, any whitening that is done around a previous veneer, may result in the now darker veneer being replaced to match the newly whitened teeth which will add time, cost, and effort to make it match the new level of white on the surrounding teeth.
A professional expert in cosmetic dentistry is the person who effectively cares to bring out your best smile and would have definitely avoided this problem by advising you to whiten your teeth before placing porcelain veneers. Unlike general dentists, expert knowledge and training helps to perfectly match the porcelain veneers to your new grade of whiteness in the natural teeth.
If for some reason you desire to have lighter teeth and also consider having veneers done, it is in your best interest to first whiten the natural teeth before veneers are bonded. This way it is possible to achieve the ultimate cosmetic result to make all the difference in creating the winning smile.
Teeth bleaching will definitely not whiten the porcelain veneers but the good news is that the latest research has proven that bleaching gel will go through teeth from behind to show a whiter appearance from the front. So if you have porcelain veneers on the front of the teeth, you can whiten the section of the tooth under the veneer. Taking into account the transparency of the veneers, the whitened teeth will possibly show through to some extent. This will result in lightening the tooth structure positioned just under the veneer. However, it is always best to consult your dentist to understand the most effective treatment for your condition.
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