leaving behind intrinsic stains. This means the stains can’t be removed just by removing what’s on the surface.” How long ...

“they actually get absorbed into the teeth and become more of those intrinsic stains,” warns Dr. Kahng. And that’s where the actual color of the teeth starts to dull or yellow. Like most ...

There are three primary categories of teeth discoloration: extrinsic, intrinsic, and age-related stains. Extrinsic stains affect the outer enamel layer of the tooth and are typically caused by ...

Teeth whitening can become genuinely addictive ... Understanding the cause of your tooth discoloration also matters. Intrinsic stains from medications, trauma, or developmental issues respond ...