Do you wake up with jaw pain, headaches, or sensitive teeth? These could be signs of teeth grinding, a condition that often goes unnoticed but can have serious effects on your oral health and sleep.
One of the most effective ways to protect your teeth and ease discomfort is with a mouth splint. Also known as a dental splint, this custom-made device is designed to reduce pressure on your teeth and jaw while you sleep. It’s a non-invasive, dentist-prescribed solution that helps prevent damage caused by clenching or grinding. In this article, we will clarify what a mouth splint is, its functionality, the various types of dental splints, and the circumstances under which you might need one.
What Does a Mouth Splint Do?
A mouth splint is a simple yet powerful tool designed to protect your teeth and support your jaw. Its main purpose is to prevent the effects of teeth grinding (also known as bruxism), which often happens during sleep without you even realising it. Over time, grinding can wear down tooth enamel, chip teeth, and put strain on your jaw joints and muscles.
By creating a barrier between your upper and lower teeth, a mouth splint helps absorb and redistribute pressure from clenching. This reduces the risk of tooth damage and helps your jaw muscles relax overnight. For people who suffer from TMJ disorders (temporomandibular joint issues), a dental splint can also reduce pain, stiffness, and inflammation in the jaw.
Many patients notice fewer morning headaches, less jaw tension, and better quality sleep after wearing a splint consistently. Because it’s custom-made to fit your mouth, it feels comfortable and secure. Whether you’re dealing with grinding, jaw pain, or both, a mouth splint offers a non-invasive way to protect your oral health and improve daily comfort.
How a Mouth Splint Works
A custom mouth splint works by gently guiding your jaw into a more relaxed position while you sleep. It fits snugly over your upper or lower teeth, creating a protective layer that cushions your bite and absorbs the forces caused by clenching and grinding. This helps minimise wear on your enamel and reduces the strain placed on your jaw joints and surrounding muscles.
Because it’s custom-made by your dentist, your splint is shaped specifically to suit your bite and dental structure. This precise fit ensures it stays in place overnight without feeling bulky or uncomfortable. As it holds your jaw in a more neutral position, it also reduces the pressure on the temporomandibular joint (TMJ) — a common source of jaw pain and tension headaches.
Some splints also work to realign your bite or stabilise the jaw, depending on your specific symptoms. Over time, wearing a dental splint can ease muscle tension, support healing in overworked joints, and prevent future dental damage. It’s a practical, low-maintenance solution that supports both comfort and long-term oral health.
Dental Splint Types
Not all dental splints are the same. Depending on your symptoms, your dentist may recommend a specific type of splint designed to target your needs. Here are the most common dental splint types and what they’re used for:
Occlusal Splints
These are the most common types, often used to treat bruxism (teeth grinding) and TMJ disorders. Occlusal splints are typically worn at night and work by creating a protective barrier between your teeth while also helping the jaw muscles relax. They can ease tension, reduce tooth wear, and relieve jaw pain.
Mandibular Advancement Splints
These splints are used to manage mild to moderate obstructive sleep apnoea and chronic snoring. They work by gently repositioning the lower jaw forward to keep the airway open during sleep. This type of splint is often used as an alternative to CPAP machines for certain patients.
Stabilisation Splints
Stabilisation splints are designed to hold the jaw in a precise position to improve alignment and reduce strain on the TMJ. They are often used when there is a significant bite imbalance or joint dysfunction.
Post-Trauma or Surgical Splints
Used after injury or surgery, these splints help support healing and stabilise the jaw. They are custom-fitted to ensure comfort and proper alignment during recovery.
Mouth Splint vs Mouth Guard: What’s the Difference?
It’s easy to confuse a mouth splint with a mouth guard, but they serve very different purposes. A mouth guard is typically used for protection during contact sports like football or boxing. These are often store-bought, made from soft plastic, and designed to shield the teeth from impact during physical activity.
A mouth splint, on the other hand, is a custom dental appliance prescribed by your dentist. It’s made from durable, high-quality materials and designed to treat medical issues such as bruxism (teeth grinding), TMJ disorders, or sleep apnoea. Unlike generic mouth guards, splints are made to fit your mouth precisely, providing targeted relief and long-term support.
While both devices sit over your teeth, only a dental splint offers therapeutic benefits for jaw alignment, muscle tension, and tooth protection during sleep. If you’re unsure which one you need, your dentist can assess your symptoms and guide you toward the right solution for your oral health.
Benefits of Using a Mouth Splint
A mouth splint offers more than just protection for your teeth, it can make a noticeable difference in your comfort, sleep, and overall well-being. Here are some of the key benefits:
- Prevents tooth wear and fractures
By creating a barrier between your upper and lower teeth, a mouth splint protects against the damage caused by grinding or clenching. This helps prevent enamel wear, chips, and cracks, reducing the risk of future dental work. - Eases muscle and jaw pain
Grinding places constant pressure on the jaw muscles and joints, often leading to soreness or stiffness. A splint helps relax these muscles and relieves the tension that causes jaw pain, particularly in people with TMJ disorders. - Reduces headaches and tension
Jaw clenching during sleep can trigger frequent headaches, especially around the temples or behind the eyes. A mouth splint eases this pressure, often reducing the severity and frequency of tension headaches. - Improves sleep quality
By limiting grinding noises and minimising discomfort, a dental splint allows for deeper, more restful sleep — not just for you, but for anyone who shares your room.
How Much Does a Mouth Splint Cost in Australia
The cost of a custom mouth splint in Australia typically ranges from $600 to $800, depending on the type, materials used, and whether it’s for bruxism or sleep apnoea. More complex splints can exceed $1,000.
Private health insurance with dental “extras” can help reduce your out-of-pocket cost, especially if you hold a policy with funds like TUH, CBHS, HCF, or NIB, which River Dental works with as a preferred provider. If eligible, you may also receive a partial Medicare rebate if the splint is prescribed as part of TMJ treatment.
While the initial investment may seem high, a mouth splint can help you avoid future costs related to cracked teeth, worn enamel, or jaw therapy, making it a smart long-term solution. At River Dental, we also offer flexible payment options like Denticare and Zip Pay to make quality care more accessible without financial stress.
How to Care for a Mouth Splint
Caring for your mouth splint properly helps it last longer and stay hygienic. After each use, rinse it thoroughly with lukewarm (not hot) water to remove saliva and debris. Avoid using hot water, as it can warp the shape of the splint.
Use a soft toothbrush to gently clean the splint. You can use mild soap or a specialised cleaner, but skip the toothpaste, as it may be too abrasive.
Once a week, give your splint a deeper clean by soaking it in a denture or retainer cleaning solution.
Always store your splint in its protective case when not in use, and keep the case clean and dry. Avoid leaving it in direct sunlight or high heat.
When Should You See a Dentist About a Mouth Splint?
If you regularly wake up with a sore jaw, tension headaches, or sensitive teeth, it could be a sign that you’re grinding or clenching your teeth at night, even if you’re not aware of it. Other common symptoms include worn or flattened teeth, chipped enamel, or disrupted sleep due to jaw discomfort.
These issues often point to bruxism or a TMJ disorder, both of which can worsen over time if left untreated. A custom mouth splint can provide targeted relief and help prevent further damage.
If any of these signs sound familiar, it’s a good idea to book an appointment with your dentist. Early intervention can protect your teeth, ease discomfort, and support better sleep and long-term oral health.
Take the Next Step Toward Relief
A custom mouth splint is a simple, effective way to relieve jaw pain, prevent tooth damage, and improve your sleep quality. Whether you’re dealing with bruxism, TMJ symptoms, or chronic tension headaches, a dental splint offers a non-invasive solution tailored to your needs. With private health cover and flexible payment options available, it’s more affordable than you might think. If you’re noticing signs like jaw soreness or disrupted sleep, book a consultation today; your comfort and long-term oral health are worth it.
Think you might benefit from a mouth splint? Book a consultation with River Dental today and let’s find the right solution for your smile.