Teeth darken naturally as we age but teeth whitening is a relatively simple and affordable procedure which, when performed by a prosthodontist, can restore whiteness and give you more confidence in your smile.
Over time, staining may be caused by exposure to coffee, tea, soda, tobacco, and certain foods. Discoloration can also occur because of certain childhood illnesses, medications, antibiotics physical trauma, etc.
Bacterial and fungal growth can result in plaque growth which can also stain the teeth. This may or may not be accompanied by tooth decay.