Dark stains on teeth are indicative of which dental condition?

Dark stains on teeth, particularly those caused by tetracycline exposure, are associated with a specific dental condition known as tetracycline staining. This type of staining occurs when tetracycline antibiotics are taken during the period of tooth development, particularly during childhood. The tetracycline can bind to calcium ions in developing teeth, resulting in a characteristic dark gray or brown discoloration.

Tetracycline staining is permanent, altering the internal structure and color of the teeth, making it distinguishable from other forms of staining that may be superficial or related to environmental factors. Understanding this condition is vital for dental professionals as it informs treatment options and aesthetic considerations when addressing patient concerns regarding tooth coloration.

In contrast, options like staining from plaque are typically lighter and can often be removed with proper oral hygiene, while fluorosis involves white spots or streaks due to excessive fluoride during tooth development, and cervical erosion refers to the loss of tooth structure at the gum line, which does not typically cause dark stains but rather exposes the underlying dentin, possibly leading to more yellowish shades.