Extrinsic Stains are on the surface of one's tooth. These come about on account of environmental publicity to things which leave discoloration on your tooth enamel. Coffee, synthetic meals colorings, and smoking cigarettes can all result in this type of staining. At-house trays: If you receive them from the dentist, https://edwinlttur.alltdesign.com/5-essential-elements-for-teeth-whitening-south-africa-46751252