Yellow Teeth Stain

Diet: Certain foods that are high in tannins, such as red wine, are potential causes of yellow teeth. Some of the most common causes of tooth discoloration include drinking beverages such as coffee, soda, and wine. These substances get into the enamel of your teeth and can cause long-term discoloration.
· Smoking: Smoking is one of the top causes of yellow teeth, and stains from smoking can be stubborn. But smokers can improve their yellow teeth by quitting smoking, following a complete oral care routine of twice-daily toothbrushing and daily flossing, and using the right teeth-whitening products.
· Illness: Certain medical conditions or medications are also causes of yellow teeth. Patients who are undergoing chemotherapy for head or neck cancers may develop yellow or stained teeth. Also, certain types of prescription medications including medications for asthma and high blood pressure are causes of yellow teeth.
· Poor Oral Hygiene: Poor oral hygiene is one of the causes of yellow teeth, but even the most diligent brushers and flossers can develop the discolored teeth that occur simply with age.
· Fluoride: Excessive fluoride exposure is also among the causes of yellow teeth, especially in children.

Medications: It has long been known that certain drugs discolor teeth in developing children. The antibiotics tetracycline and doxycycline can affect enamel formation in children under the age of 8.

Aging: As you age, the outer layer of enamel on your teeth gets worn away exposing the yellow dentin. Your tooth dentin also grows as you age, which decreases the size of the pulp. The translucency of the tooth reduces, making it look darker.

Genetics: Thicker and whiter enamel runs in some families.