What Your Smile Says: The Psychology of Smiling

Think about the last group photo you were in. Some people grin openly; others keep their lips pressed together or turn slightly away from the camera. Often the difference has nothing to do with mood and everything to do with how someone feels about their teeth.

Why smiles carry so much weight

Facial expressions are one of the main ways people read each other, and a smile is among the most recognisable. Psychologists have long distinguished between a polite smile, which mainly involves the mouth, and a spontaneous one, which also creases the skin around the eyes. That second kind, sometimes called a Duchenne smile after the nineteenth-century French physician who described it, tends to be read as warmer and more genuine.

The practical point is simple: when people hold back their smile, others can misread it as reserve or unfriendliness, even when the real reason is a chipped tooth or a gap they dislike.

When people start hiding their teeth

We hear similar stories at our practice on The Broadway in Mill Hill. Someone covers their mouth when they laugh, avoids video calls, or stopped smiling in photographs years ago. Common reasons include:

• staining or yellowing that has built up over time
• crooked or crowded front teeth
• worn, chipped or uneven edges
• gaps, including spaces left by missing teeth
• old fillings or crowns that no longer match

None of these is unusual, and none needs treating unless it bothers you. But if it is affecting how you feel day to day, it is worth knowing what the options are.

Health first, appearance second

Before any cosmetic work, a dentist should check that your teeth and gums are healthy. Bleeding gums, decay or a grinding habit can undermine cosmetic treatment, and sometimes treating those problems makes a noticeable difference to how a smile looks on its own. A professional clean with our hygiene team can also lift surface staining from tea, coffee or red wine.

Options people often ask about

• Teeth whitening, carried out or prescribed by a dental professional, to lighten natural tooth colour.
• Composite bonding to rebuild small chips or close minor gaps.
• Clear aligners such as Invisalign to straighten teeth gradually.
• Veneers or crowns where teeth are more heavily worn or discoloured.
• Implants, bridges or dentures to replace missing teeth.

Each has its own benefits, limits and upkeep, and the right choice depends on your teeth and what you want to change. A good consultation should leave you with a clear explanation of the options, including doing nothing.

A small change can be enough

Many patients don't want a dramatically different smile. They simply want to stop thinking about it. Sometimes that means a whitening course before a family occasion; sometimes it means fixing one chipped tooth that has bothered them for years.

If you live in Mill Hill, Mill Hill East, Totteridge or nearby and would like to talk it through, Dental Wellness Mill Hill is at 46 The Broadway, NW7 3LH. Call 020 3930 4900, email smile@dentalwellnessmillhill.co.uk or book online.