How to keep your teeth white.

Following good oral hygiene practices and staying away from stain causing food products can easily help decrease your risk for darkened teeth. In order to help the longevity of your pearly whites, touch up treatments with dental whitening products can help. If you are considering this approach, it is essential that you avoid stain causing foods while you are bleaching your teeth. During the whitening process the pores of the enamel are opened from the use of bleaching agents, allowing the hydrogen peroxide or carbamide peroxide to enter the dentin layer of the tooth. It is very important that during this time you avoid foods and beverages that contain high levels of pigment, such as coffee, tea, yellow mustard, grape juice, red wine, tomato sauce… 
The coloring of your food could penetrate the tooth resulting in a darkened tinge to the teeth; not the results you were expecting while whitening your chompers.