by corvin » Mon Jul 12, 2010 4:36 pm
You must first have an idea as to what works and what doesn't for teeth whitening.
Women who are pregnant or nursing are advised against whitening, and so are people who are suffering from gum disease. Whitening is also not good for people with cracked teeth or cavities in the areas that they want to be whitened. Further most teeth whitening procedures will work with natural teeth; veneers, crowns, bondings and fillings don’t usually respond to whitening agents.
Whitening also depends on the undertone one has which range from Pale yellow to pale brown or grey.
Teeth whitening generally works for those with Pale yellow undertone as compared to those with Brown undertone.
Bleaching would be a success generally for those whose teeth are stained because of tea, coffee, wine or cola.
Also please do go through the source link for more detailed information.