The tell tale sign of bleaching or the presence of a number of porcelain veneers is that the anterior teeth are usually all the same shade. The canine teeth and the bicuspids are normally are normally a shade or two yellower than the rest of the anterior teeth.
After tooth whitening the canine teeth lighten even more than the naturally lighter anterior teeth and appear to be more or less the same shade as the anterior teeth. Although this look is not common in unbleached smiles, it is visually appealing and tends to create a broader 10 tooth smile since the canines and bicuspids are now lighter and visually appear to stand out more.
The answer is not clear to me. I am little bit confused about this question and answer.
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It is not only the over all brightness of a bleached smile, but the homogeneous color that is the tip off of a history of bleaching.Non bleached smiles have cuspids that are noticeably yellower than the adjacent lateral incisors. After bleaching the cuspids become noticeably whiter and tend to match the shade of the adjacent lateral incisors.
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