Oral health and stress: what's the link?
Wellness

Oral health and stress: what's the link?

Published on March 12, 2025

Stress has become a daily companion for many of us, impacting not only our mental wellbeing but also our oral health.

Let's explore together how stress can affect your smile — and how to address it through the right lifestyle choices and tailored care.

Stress: a silent enemy of your smile

When we are stressed, our body releases hormones that can disrupt its natural balance. In the mouth, this disruption can manifest as:

  • Teeth grinding (bruxism) : An unconscious reflex that wears down enamel and can cause pain.
  • A reduction in saliva production : Essential for neutralising acids and protecting against cavities, a lack of saliva increases the risk of dental problems.
  • Neglecting your oral care routine : Stress can lead us to abandon our self-care habits, allowing plaque and bacteria to build up.

It is therefore essential for our health to learn to manage stress more effectively — for our mental wellbeing, but also for our overall health!

Focus: the link between stress and the oral microbiome

Beyond these visible effects, stress also acts on the oral microbiome — that is, the entire community of micro-organisms living in our mouth. Recent studies have shown that both physical and psychological stress can alter the diversity and composition of this microbiome:

  • Changes in richness and diversity : In an environment of intense stress, the bacterial diversity of the mouth can decrease, leading to an imbalance that is conducive to infections (Stoy et al., 2023).
  • Changes in saliva composition : Another study showed that in healthy women, prolonged stress can generate significant changes in saliva composition, suggesting a direct impact on the oral microbiome (Cauwenberghs et al., 2023).

A healthy oral microbiome is essential for combating pathogenic bacteria and maintaining fresh breath. When stress disrupts it, our mouth becomes more vulnerable to cavities, gingivitis, and other issues.

Hence the importance of looking after yourself and your mental equilibrium in order to support a balanced oral microbiome !

Solutions for managing stress more effectively

Incorporating stress management techniques into your daily life can have beneficial effects on your overall health, including your oral health. Here are some practical tips:

  • Maintain a regular care routine
    Even during stressful periods, try to keep up your oral hygiene routine to protect your smile! We recommend the gum-regenerating toothpaste from The Smilist, specially formulated to calm the effects of stress on your gums!
  • Use targeted products
    In addition to your routine, consider using a tongue scraper to remove residue and promote a balanced oral flora. We particularly recommend The Smilist model for its gentleness and efficacy!
  • Practise relaxation techniques
    Meditation, yoga, or simply a walk in the fresh air can reduce stress and improve your quality of life — with a positive impact on your smile!

Adopt a holistic approach for a serene smile

Stress, though common, should not compromise your oral health. By adopting a holistic approach that combines daily care, quality products, and relaxation techniques, you are investing in your smile — and in your overall wellbeing!

Christiane, Dentist & Co-founder of The Smilist