While you can never be too rich or too thin-at least according to Coco Chanel-your teeth can be too white.
Dentists are seeing more and more patients plagued by over-bleaching, which is especially problematic for those whose teeth have a lot of translucency. In these cases, teeth may actually get darker because the translucency of the enamel allows the inside of the tooth to show through.
Many long-term bleachers complain of reaching a brightness plateau, but this can be due more to time than oral neglect, because the dentin within the tooth naturally gets darker as we age.
When you want to go whiter but bleaching is no longer an option, your dentist may recommend porcelain veneers, which can make teeth appear whiter for a longer period of time. However, even veneers can appear darker over time.
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