Teeth can become stained from daily habits such as coffee, tea, colored foods, smoking, and plaque buildup. They can also appear darker because of aging, enamel wear, old restorations, trauma, medication history, or developmental discoloration.
The cause matters because not every discoloration responds the same way. Some teeth whiten well, while others may need bonding, veneers, internal whitening, or replacement of old restorations. A consultation helps identify the right option.