US scientists have investigated the makeup of the perfect smile, saying the findings could be useful for clinicians working to restore facial movement

If you want your smile to appear pleasant, you might want to avoid a dazzling beam, research suggests. A study by scientists in the US has found that wide smiles with a high angle and showing a lot of teeth are not the best at creating a positive impression.

“A lot of people don’t understand how important their smiles are and how important this aspect of communication we do with each other every day is,” said Stephen Guy, a co-author of the research from the University of Minnesota. The authors say the findings could prove valuable for clinicians working to restore facial movement and expression to those who have experienced facial paralysis.

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