My teeth keep getting more yellow even though I brush twice a day. Why won’t they stay white?

When Brushing Isn’t Enough
Plaque and tartar build-up can make teeth appear yellow. While brushing helps remove plaque, tartar is hardened plaque that requires professional cleaning to remove.
Regular dental check-ups and cleanings every six months are crucial for maintaining oral health and preventing tartar accumulation, which can lead to more pronounced discoloration.

Age, Genetics, and Hormones: Discoloration You Can’t Fully Control
As we age, teeth naturally become more yellow due to enamel wear and changes in dentin. Genetics also play a role in determining the natural color and translucency