The Science of Smiling: How It Affects Your Brain and Mood

How does smiling affect the brain and moods?

A smile is one of the most recognizable expressions of joy and happiness. Understanding the science of smiling is important for orthodontic patients because it further proves the benefits of having orthodontic treatment. We will discuss the physical act of smiling, how it affects the brain, the psychological impact of smiling, and how orthodontic treatment can improve your smile.

What is a Smile?

A smile is the upward curvature of the corners of the mouth. It is caused by the contraction of the zygomatic major muscle and the orbicularis oculi muscle according to the Cleveland Clinic. The brain’s response to smiling includes the release of neuropeptides and hormones. For example, these hormones include endorphins and dopamine. As a result, positive emotions and mood are induced.

How Does Smiling Affect The Brain?

When you smile, dopamine, endorphins, and serotonin are released in the brain. These neurotransmitters activate reward centers in the brain, which reinforce the behavior of smiling. Also, smiling reduces the levels of cortisol. This is a hormone associated with stress and anxiety. In addition, smiling boosts levels of oxytocin. This hormone associated with bonding and social connection. Finally, all of these changes combine to create a positive mood and increase happiness.

How Can Orthodontic Treatment Can Improve My Smile?

Orthodontic treatment options such as braces, clear aligners, and retainers can help correct misaligned teeth. This can improve the appearance of your smile. Additionally, a straighter smile can also lead to improved oral health and better functioning of the mouth and jaw. Finally, orthodontic treatment can improve confidence and self-esteem. This can lead to more frequent and authentic smiles.


It’s important to prioritize oral health and consider orthodontic treatment options. Remember that smiling is not only a physical act but also a psychological one. It has the potential to improve mood, relationships, and overall well-being. Orthodontic treatment can play a significant role in improving the appearance and function of your smile. As a result, your overall quality of life can be enhanced. We encourage you to schedule a consultation. We can’t wait to help you achieve the beautiful smile you’ve always wanted, and hope to see you soon!