Green stains on teeth are often linked to which of the following?

Green stains on teeth are characteristically associated with poor oral hygiene and the presence of chromogenic bacteria. These bacteria can produce pigments that result in discoloration, particularly in areas where plaque accumulates due to inadequate brushing and flossing. The green stain is primarily a result of greenish chromogenic bacteria, along with iron compounds that may be present in the diet and oral environment.

In contrast, stains linked to a high sugar diet or gingivitis and calculus buildup typically involve different types of discoloration or deposits, such as brown or yellow stains from tartar buildup. Chlorophyll supplements can also cause green staining, but this is less common compared to the significant influence of poor oral hygiene and chromogenic bacteria. Therefore, the association of green stains on teeth is predominantly linked to the effects of bacteria that thrive in an unclean oral environment, making the choice that addresses poor oral hygiene and chromogenic bacteria the most accurate.