49+ Dark Brown Stain On Tooth. First, identify what the main triggers are for causing brown stains on teeth. Brown spots on your teeth can be noticeable or subtle.
Brown stains can occur anywhere on teeth.
Causes of brown staining on teeth. My presumption is that you have damage to the enamel on that tooth, a scratch, and that plaque or other materials have settled into it. Once a cavity begins to eat through a tooth's structure, the internal structure of a tooth is more porous than enamel and thus. Teeth are porous and therefore, are susceptible to staining.