Certain foods can stain the enamel, the outermost layer of the teeth, and plaque buildup can cause them to look yellow. Discoloration caused by medications, chemotherapy treatments, and age-related enamel dilution can also lead to yellow teeth. To prevent this, it is important to avoid eating foods and drinks that stain, rinse your mouth with water after consuming them, and talk to your dentist about whitening treatments. Dead teeth have a different physical appearance than healthy teeth due to the lack of blood supply.
Coconut oil extraction may help whiten teeth, but more research is needed. Genes can also influence the color of teeth due to the thickness of the enamel. To treat yellow teeth, take-home trays with a whitening gel and blue light can be used to brighten them up to ten shades in less than an hour. Hydrogen peroxide is the only material that has the ability to whiten teeth by removing intrinsic stains.