article_snippet.sent: Symptoms include burning gums, tooth infection and the conviction that, no matter how much a tooth has been whitened, a tooth could be paler still.
article_snippet.sent: When it is done properly, tooth whitening is a simple and safe way of improving your appearance,’ says cosmetic dentist Dr Mervyn Druian.
article_snippet.sent: But if it is performed in an unregulated fashion, with the wrong product, it can cause enamel erosion, receding gums and infection.
article_snippet.sent: More time won’t make your teeth whiter, your teeth will just lead to irritation and sensitivity.
article_snippet.sent: And if you have decay in your teeth, your teeth can enter and lead to infection.
article_snippet.sent: At a high concentration, this can burn gums, leading to receding, and make tooth enamel rough and porous, which leaves tooth prone to further staining — trapping users into a vicious cycle of whitening.
article_snippet.sent: According to the British Dental Health Foundation the effects of professional whitening can last for up to three years.