What’s Behind a Perfect Smile?

October 23, 2018   /   byHealthier Societies  / Categories :  Dental
Woman smiling

One of the most popular aphorisms about happiness is, “It takes 43 muscles to frown, and just 17 to smile.” While there’s no proof that it’s true, the message remains: smiling elicits a positive response to people.

Smiles convey so much without the need for words. A smile says you’re confident, friendly, and even optimistic. It makes you more attractive and approachable. But not all smiles are created equal. If you’ve ever wondered about what makes for a perfect smile, read on below.


A perfect set of teeth contributes to a perfect smile. Scott W. Grant, DMD, a cosmetic dentist in Meridian, Idaho, says that almost everyone has a primary desire: shiny, white teeth to show off when smiling. The perfect teeth for an attractive smile should be white, straight, and evenly spaced. Smaller and oval or rounded teeth also create a more feminine appearance while larger, blunt, and square-shaped teeth appear more masculine.

In an ideal smile, you should also show your central and lateral upper incisors (four middle teeth) fully along with a portion of your canines.

Gum Tissue

For an ideal smile, the gum tissue should look healthy, meaning no red or bleeding gums. You should also show less than three millimeters of gums between the top of your teeth to the bottom of your upper lip.


The lips frame the teeth and gums. The most attractive lips for people are those with 1:1 size ratio between the upper and lower lip, according to a study published in the Journal of Cranio-Maxillofacial Surgery. The curve of the lip should also be parallel to that of the teeth, creating a perfect smile arc.


The eyes are a part of a perfect, genuine smile. The Duchenne Smile, often called “smizing” or smiling with the eyes, is an indicator of true enjoyment. It involves the raising of the corner of the mouth and the raising of the cheek, which forms crow’s feet around the eyes.

Of course, the different facial features and overall mood affect anyone’s smile. No matter if you tick all the perfect smile boxes or not, as long as you do smile, it’s enough to send a positive feeling to your brain as well as the people around you.

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