Teeth whitening regimens are extremely effective at removing stains caused by coffee, tea, and tobacco. The American Dental Health Association reports that 96% of patients with coffee, tea, or tobacco stains end up with brighter, whiter teeth. Other stains, like those from too much fluoride or the use of the antibiotic tetracycline don’t respond as well to bleaching, but teeth whitening can at least get rid of the tiny particles that get into cracks in enamel, leaving the teeth cleaner and perhaps brighter. If you have caps, crowns, or tooth colored fillings, these will not whiten with teeth whitening kits.