Researchers from the University of Minnesota attended the 2015 Minnesota State Fair to find out what makes a perfect smile and have just released their findings.

Sofia Lyford-Pike is an assistant professor at the university and a plastic surgeon. The Denver Post reports that she works on patients with paralyzed faces and has to make  decisions about how to shape their smile.

The team had 800 fair-goers rank 27 different smiles with the width, angle and amount of teeth adjusted in each smile.

Photo Courtesy of Plos One
Photo Courtesy of Plos One
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So which is the perfect smile?

Researcher Stephen Guy told MnDaily that there is no such thing as a perfect smile but did say "the most highly rated smile was “medium” for all the characteristics — a smile that’s not too wide, not too narrow and with just the right amount of teeth shown."

Lyford-Pike said she use this data for future surgical procedures.

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