Waking with a tight jaw, a dull temple headache or teeth that feel unusually sensitive can be more than an uncomfortable start to the day. For many people, these signs point to clenching or grinding during sleep. Occlusal splints are custom-made dental appliances designed to create a protective barrier between the upper and lower teeth, helping manage the effects of excessive bite forces while your dentist investigates the cause.
They are often called night guards, but a properly planned splint is not simply a cushion for your teeth. Its design, fit and purpose should reflect your bite, jaw function, dental history and any existing restorations. This matters especially if you have veneers, crowns, bridges or implants that need protection from damaging pressure.
What are occlusal splints used for?
An occlusal splint is a removable appliance, commonly made from durable clear acrylic or nylon, that sits over either the upper or lower teeth. It is made from an accurate impression or digital scan so it fits securely and allows your dentist to carefully control how your teeth meet.
Occlusal splints may be recommended for people who clench or grind their teeth, a condition known as bruxism. Some people are aware of the habit, while others only learn about it after a partner hears grinding at night or a dental examination reveals tell-tale wear. Flattened tooth edges, small chips, cracked fillings, muscle tenderness and fractured restorations can all be associated with heavy bite forces.
The appliance may also form part of a broader approach to jaw discomfort or temporomandibular joint concerns. However, jaw pain has many possible causes. A splint is not a universal cure for clicking, headaches or facial pain, and it should not replace a proper examination. Your dentist may recommend monitoring, physiotherapy, stress-management strategies, bite assessment or referral where appropriate.
Why a custom splint can make a difference
A pharmacy night guard may seem like a quick solution, particularly when you are worried about worn teeth. The trade-off is that boil-and-bite guards are generic. They can feel bulky, fit poorly and may not provide even contact across your bite. In some cases, an ill-fitting appliance may not be addressing the stress points properly.
A professionally made splint is designed around your individual teeth and bite. At SmileOnPerth, digital intraoral scanning can be used to capture detailed impressions without conventional putty moulds. The resulting appliance is planned for retention, comfort and controlled contact, then checked and adjusted at delivery.
That level of accuracy is valuable for patients with cosmetic or restorative dentistry. Porcelain veneers and crowns are strong, but they are not indestructible. Repeated clenching can place significant force on ceramic restorations and natural teeth alike. A splint cannot guarantee that a tooth or restoration will never chip or fracture, but it can be a sensible protective measure when bruxism is present.
Signs you may benefit from an assessment
Grinding is not always noisy, and clenching often happens silently. You may benefit from a dental assessment if you notice persistent jaw fatigue on waking, tension around the temples, tooth sensitivity without an obvious cavity, or teeth that appear shorter or more worn than before.
Other clues include chipped teeth, recurring fractures in fillings, cracks in enamel, a partner noticing grinding sounds, or a splint you used years ago that no longer fits. Changes to teeth, gums, restorations or orthodontic treatment can alter how an old appliance sits. A splint should be reviewed rather than forced into place.
It is also worth raising the topic before beginning elective cosmetic treatment. If a person is planning veneers, crowns or a smile makeover and has evidence of grinding, protecting the planned result should be part of the conversation from the outset. Treatment planning is stronger when appearance and function are considered together.
The process of making an occlusal splint
Your appointment begins with a conversation about your symptoms, dental history and goals. Your dentist will examine tooth wear, existing restorations, gum health and the way your teeth come together. They may ask about sleep quality, stress, medications and changes in your bite, as these can be relevant to clenching or grinding.
If a splint is suitable, a digital scan of your teeth is taken and used to fabricate the appliance. At the fit appointment, your dentist checks that the splint seats fully and that the contact points are balanced. Small adjustments can make a meaningful difference to comfort and function.
Most patients are advised to wear their splint at night, although daytime use may be considered in specific circumstances. Follow the instructions provided for your appliance. Wearing a splint more often than prescribed, adjusting it yourself or using it to treat unexplained pain without review can create avoidable problems.
Getting used to a splint: comfort, care and follow-up
There can be a short adjustment period. A new splint may feel noticeable at first, and some people experience increased saliva or mild awareness of their bite. This generally settles as you become accustomed to it. If it causes pain, feels loose, changes the way your teeth meet after removal, or cannot be worn comfortably, contact your dental clinic for review.
Cleaning is straightforward but should be consistent. Rinse the splint with cool water after use, brush it gently with a soft toothbrush and store it in its protective case when dry. Hot water can distort acrylic, so avoid leaving it in a hot car, soaking it in boiling water or putting it through a dishwasher. Your dentist can advise on suitable cleaning products, particularly if there is stubborn build-up.
Bring the appliance to your regular check-up. Teeth move over time, restorations may be added or replaced, and bite patterns can change. Regular reviews allow your dentist to assess both the splint and any ongoing signs of wear or damage.
What a splint can and cannot do
A well-made splint can help separate the teeth and distribute biting forces across the appliance. It may reduce the direct contact that contributes to tooth wear, chipped edges and stress on restorations. For many patients, that protection offers reassurance, particularly after investing in cosmetic or restorative dental care.
It cannot remove every underlying driver of bruxism, permanently stop clenching, or guarantee relief from jaw pain and headaches. Sleep-related grinding can be influenced by stress, sleep disturbance, medication, alcohol, smoking, airway concerns and other health factors. Your dentist may identify reasons to work alongside your GP, a physiotherapist or another health practitioner.
The honest answer is that the right appliance depends on the diagnosis. Some people need a protective night splint; others may need treatment for a cracked tooth, gum disease, bite changes or a jaw condition instead. This is why an individual assessment matters more than choosing an appliance based on symptoms alone.
If your teeth are showing signs of grinding, or you want to protect veneers, crowns or other dental work, raise it at your next consultation. A carefully fitted splint can be a practical part of looking after the smile you are working towards – and the natural teeth supporting it.