It’s been said that math is the universal language. But math can never communicate as much as a smile does — and a smile means the same thing in every nation. Unfortunately, however, the smiles in some countries aren’t as healthy as those in others. The most acceptable measure of a large population’s oral health is the DMFT index. DMFT stands for decayed, missing, filled teeth. The DMFT index is widely used when assigning a numerical value to a population’s oral health and hygiene condition, and is determined by dentists examining a sample group from the population. Here is a list of countries that have fared very well on DMFT index and are rated the best in the world for oral health.

  1. Denmark
  2. Germany
  3. Finland
  4. United Kingdom
  5. Sweden
  6. Switzerland
  7. Canada

The countries below fare poorly on the DMFT index and have among the worst oral health in the world.

  1. Cambodia
  2. Ecuador
  3. Gabon
  4. Mauritius
  5. Bolivia
  6. Guatemala
  7. Dominican Republic

Note: Data in unavailable from some Asian and African countries