What are extrinsic stains?

Extrinsic stains refer to discoloration that occurs on the surface of a tooth due to various external factors, such as food, drinks, tobacco, or poor oral hygiene. These stains are typically not embedded in the tooth structure itself, which makes them removable through professional dental cleaning procedures, such as coronal polishing, or through good at-home dental hygiene practices.

Understanding this concept is essential for dental professionals who perform coronal polishing, as they aim to enhance the aesthetics and health of teeth by effectively removing these surface stains, ultimately providing a more polished and cleaner appearance for patients. This approach directly contributes to better oral health and can boost a patient's confidence in their smile.

The other options refer to different classifications or characteristics of dental stains, which do not accurately describe extrinsic stains. For example, intrinsic stains originate from internal factors such as trauma or aging, while stains that cannot be removed usually pertain to intrinsic stains or discolorations caused by medications or systemic conditions. Stains related to genetic factors typically indicate hereditary conditions affecting tooth color, further separating them from the reversible nature of extrinsic stains.