There are two types of tooth stains:
- Extrinsic. External stains can be caused by darker foods and beverages, tobacco use, and inadequate brushing
- Intrinsic. Internal stains may result from trauma, tooth infection and gum disease, excess fluoride, certain medications, and the process of aging
To whiten teeth, stains must either be removed or covered. Which option will be the most useful for your smile is dependent on the cause, location, and extent of your tooth discoloration.