1. Coffee and cigarette smoking are two of the major reasons for discoloring of teeth. Any dark beverages can add to this. Even juices, red wine and soda can darken the teeth. Even beer. Swishing around some water after drinking these dark liquids can help offset the staining.
2. Thanks to family genetics some just have naturally thicker enamel and their teeth are naturally brighter. But, on the flip side some have thin enamel and there for darker teeth.
3. Too much fluoride can make your teeth chalky looking. This is more prevalent in children than in adults and it is a rare condition. And you only need about a pea sized amount of toothpaste. Some use too much and this can add to the amount of fluoride you are taking in.
4. Some over-the-counter medications and antibiotics can dull the teeth. Tetracycline can turn the teeth yellow in children. It is a good idea to talk to your dentist about the effects of any medications you may be taking.
5. As you age the enamel of your teeth wears thing and the underlying layer called the dentin may show through. This may make your teeth look brown or yellow.
6. Death in teeth due to damage or accidents can cause your teeth to become discolored. Over time trauma and painful procedures such as root canals can cause discoloration.
7. Brush your teeth as soon as you can after eating or drinking heavily pigmented foods such as cranberries or blueberries even soy sauce. This will rinse the the dark liquid off the teeth.
8. If you don’t remember consistently to floss your teeth the stain producing substances are not being removed and are being left between your teeth. Another reason for darkened and discolored teeth.