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The Science Behind Mouthguards: How They Protect Your Teeth and Jaw

Updated: Sep 19, 2023


Mouthguards are a common sight in sports and recreational activities. They serve as a crucial line of defence, protecting our teeth and jaws from potential injuries. But have you ever wondered about the science behind mouthguards and how they provide that much-needed protection? In this blog, we will delve into the scientific principles that underpin mouthguards and explore how they safeguard our dental health.

Shock Absorption: Reducing the Force

One of the primary functions of a mouthguard is to absorb and distribute the force of an impact. During sports or physical activities, our mouths are susceptible to blows or collisions that can lead to dental trauma. Mouthguards act as a cushion, spreading the force over a larger area and reducing its concentration on any specific tooth or jaw joint. This shock absorption mechanism helps prevent fractures, dislocations, and other injuries to the teeth and jaw.

Material Properties: Finding the Right Balance

The effectiveness of a mouthguard lies in the choice of materials used in its construction. Mouthguards are typically made from thermoplastic materials that exhibit both strength and flexibility. These materials possess the ability to deform upon impact, absorbing and dispersing the force before returning to their original shape. The balance between strength and flexibility ensures that the mouthguard can withstand significant forces without compromising its protective capabilities.

Customized Fit: Tailored Protection

The fit of a mouthguard plays a crucial role in its ability to protect teeth and jaws effectively. Custom-fitted mouthguards, made from dental impressions, offer the best fit and provide optimal protection. The customization process ensures that the mouthguard adapts precisely to an individual's dental anatomy, covering each tooth and fitting snugly over the contours of the jaw. This personalized fit enhances the shock absorption properties and prevents the mouthguard from dislodging during physical activity.

Jaw Stability: Preventing Injuries

Mouthguards not only shield the teeth but also contribute to the stability of the jaw joint. During an impact, the lower jaw can experience excessive movement, potentially leading to dislocations or damage to the temporomandibular joint (TMJ). Mouthguards provide support and act as a stabilizing element, reducing the risk of jaw-related injuries. By minimizing excessive jaw movement, mouthguards help protect the delicate joint structures and maintain proper alignment.

Preventing Soft Tissue Injuries: Beyond Teeth and Jaws

In addition to shielding teeth and jaws, mouthguards also help prevent soft tissue injuries. The lips, cheeks, and tongue are vulnerable to accidental bites during physical activities. Mouthguards create a barrier between the teeth and the soft tissues, reducing the risk of lacerations or other oral injuries caused by sudden impacts or accidental biting. By providing a cushioning effect, mouthguards minimize the likelihood of these injuries and promote overall oral safety.


Mouthguards are a vital tool in protecting our teeth and jaws during sports and physical activities. The science behind mouthguards revolves around their ability to absorb and distribute the force of impacts, the choice of materials that provide the right balance between strength and flexibility, and the importance of a customized fit tailored to an individual's dental anatomy. Mouthguards not only shield teeth but also contribute to jaw stability and prevent soft tissue injuries. Understanding the scientific principles behind mouthguards reinforces their significance and encourages their use in promoting oral safety in sports and other physical pursuits.

Here at Team Game Guard we offer a wide range of UKCA/CE approved self-fit, custom, boil & bite gumshields suitable for all contact sports. Our High Quality, British-made gumshields make a great choice or very reliable spare. Check out our range here.

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