What characterizes endogenous stains?

Endogenous stains are intrinsic in nature, meaning they originate from within the tooth structure rather than from external sources. These stains are often caused by factors such as genetics, certain medications, or systemic conditions that affect the formation of the teeth. Since they form part of the tooth itself, these intrinsic stains cannot be simply removed by polishing or surface treatments.

Polishing is effective for extrinsic stains, which lie on the surface of the enamel and can be removed through mechanical action. Endogenous stains, however, are embedded within the tooth’s structure and require different treatment approaches, such as whitening methods or cosmetic procedures, to address them effectively. Understanding this distinction is crucial for dental professionals when diagnosing and recommending appropriate treatments for patients.