What is the characteristic of brown stains associated with poor oral hygiene?

The characteristic of brown stains associated with poor oral hygiene is closely linked to the presence of plaque and tartar buildup. Over time, inadequate oral care leads to the accumulation of bacteria and food particles on the teeth, creating plaque. When plaque is not removed through regular brushing and flossing, it can harden into tartar (or calculus), which is more difficult to remove and often contributes to discoloration of the teeth. The pigment from stains, along with the deposits from plaque and tartar, can manifest as brown discoloration in the teeth.

Brown stains specifically indicate long-term neglect of oral hygiene practices, as they often signify areas where plaque has remained undisturbed. This accumulation can lead to not only cosmetic concerns but also more serious dental health issues such as cavities and gum disease. Thus, the presence of plaque and tartar buildup directly correlates with the development of brown stains on the teeth, making this the most accurate choice.