Tooth stains can be broken down into two categories. The two categories are extrinsic staining, meaning on the outside surface of the teeth, and intrinsic staining, meaning inside the teeth. Extrinsic staining is removable staining and will come off at a regular dental cleaning. In contrast, intrinsic staining is permanent and can only be removed with whitening products that enter into the underlying tooth structure.
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There are several different options for tooth whitening that you should consider before based on your needs and expected results. It is a good idea to first learn about types of teeth stains. There are two types of staining, internal staining and external staining. External staining is staining from darker pigmented foods and drinks (usually coffee, tea, red wine, blueberries, etc.). External stains also come from smoking, which causes an accumulation on the outer surface of the teeth. Fortunately, these stains can be removed during your dental hygiene cleanings. Internal staining are stains that have travelled to the inner layer of the teeth and changed the shade of the teeth. Thankfully, there are solutions for both of these types of staining.
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