Having discolored teeth could make you look older, and the condition is suggestive of underlying oral problems. Among adults who don’t maintain their teeth and gums, stained teeth would be the first indication of negligence, with the enamel, the white outer layer of the tooth, coated by plaque and tartar stain, caused by the build-up of bacteria. Teeth naturally darken with age due to gradual degeneration and grime buildup. Removing stains through regular cleaning to keep teeth whiter is more manageable in the teen years, but the yellowish hue re-occurs in the twenties. As a person ages, the dentition becomes tougher to maintain its whiteness.
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