Dentist warns smokers: tar causes irreversible colour change in teeth
Maintaining a beautiful smile requires effort. We have heard countless times about the things that damage the colour of our teeth: coffee, tea, smoking. Experts reveal what exactly causes teeth to darken. Tobacco smoke contains two substances that make teeth change colour. Although nicotine is actually colourless, it turns yellow when it bonds with oxygen molecules. Tar, as a residue of smoked tobacco, is naturally dark and settles on the surface of the teeth, explains Sandra Skuodaitė, Dentist and Endodontist at the Prosthetics and Implantology Clinic in Vilnius.