How Do Night Guards Protect Against Teeth Grinding?

When it comes to protecting against teeth grinding, night guards are an effective and reliable solution. These dental devices not only act as a cushion between your upper and lower teeth but also provide a barrier to prevent the excessive grinding and clenching that can damage your teeth over time. By wearing a night guard while you sleep, you can wake up with a rested jaw, minimal tooth wear, and a comfortable smile. Find out more about how night guards work their magic and why they are a game-changer for those struggling with teeth grinding.

What is teeth grinding?


Teeth grinding, scientifically known as bruxism, is the act of clenching or grinding your teeth unconsciously, usually during sleep. This condition affects both children and adults and can be caused by various factors.


There isn’t a single cause for teeth grinding, as it can be influenced by a combination of factors. Stress and anxiety are common triggers for teeth grinding, as they often manifest themselves in sleep-related disorders. Other possible causes include misaligned teeth, jaw abnormalities, or a side effect of certain medications.


Teeth grinding can have detrimental effects on your oral health if left untreated. The constant clenching and grinding puts excessive pressure on your teeth, leading to accelerated wear and tear. Over time, this can result in enamel damage, tooth fractures, and even tooth loss. Additionally, teeth grinding can cause temporomandibular joint disorder (TMJ), resulting in headaches, jaw pain, and difficulty opening or closing your mouth.

What are night guards?


Night guards, also known as occlusal splints or dental splints, are dental appliances designed to protect your teeth from the harmful effects of teeth grinding. They are typically made of durable and comfortable materials that fit over your teeth, creating a protective barrier between your upper and lower jaws.


There are several types of night guards available, each catering to different needs and preferences. Soft night guards are made from a flexible rubber-like material, providing cushioning for your teeth and gums. Dual laminate night guards combine a soft inner layer with a harder outer layer, offering enhanced durability. Hard night guards, on the other hand, are made from rigid acrylic and are ideal for severe teeth grinding cases.


Night guards serve multiple purposes when it comes to managing teeth grinding. Primarily, they act as a physical barrier, preventing your teeth from coming into direct contact with each other. This helps to minimize the damage caused by grinding and clenching. Additionally, night guards can help align and reposition your jaws, promoting a more comfortable and relaxed bite.

How do night guards work?

Cushioning and absorbing forces

Soft and dual laminate night guards work by providing cushioning and absorbing the forces created when you grind your teeth. They act as a shock absorber, preventing direct tooth-to-tooth contact and reducing the impact on your jaw joints.

Preventing contact between teeth

Night guards effectively create a protective barrier between your upper and lower teeth, preventing them from grinding against each other. This helps to reduce the wear and tear on your tooth surfaces and preserves the integrity of your enamel.

Alignment and repositioning of jaws

In some cases, night guards can help align and reposition your jaws, reducing stress and tension in the temporomandibular joints. This alignment can result in a more stable and comfortable bite, alleviating symptoms associated with teeth grinding such as headaches, jaw pain, and muscle fatigue.

Types of night guards

Soft night guards

Soft night guards are made from a pliable, rubber-like material that molds to the shape of your teeth. They offer a higher level of comfort and flexibility compared to other types of night guards. Soft night guards are a popular choice for individuals with mild to moderate teeth grinding and those who prefer a more cushioned feel.

Dual laminate night guards

Dual laminate night guards are constructed with a combination of soft inner layers and hard outer layers. This design provides the best of both worlds, offering both cushioning and durability. Dual laminate night guards are often recommended for individuals with moderate to severe teeth grinding.

Hard night guards

Hard night guards, also known as acrylic splints, are made from rigid and durable acrylic material. They are the most durable option and are typically prescribed for individuals with severe teeth grinding or those who possess heavy biting forces. Hard night guards are less flexible than soft and dual laminate options, but they offer maximum protection for your teeth.

Getting a night guard

Professional fitting

For optimal protection and comfort, it is advisable to seek professional help when getting a night guard. A dentist or an orthodontist can assess your specific conditions and requirements, ensuring that the night guard is customized to fit your mouth perfectly. A professional fitting also allows for adjustments and fine-tuning to address any alignment issues.

Custom-made night guards

The most effective and personalized solution to teeth grinding is a custom-made night guard. Custom-made night guards are created based on precise impressions of your teeth, ensuring a perfect fit and maximum effectiveness. These appliances are fabricated in dental laboratories using high-quality materials and are designed specifically for your unique needs.

Over-the-counter night guards

Alternatively, there are over-the-counter night guards available without the need for professional fitting. These night guards come in a variety of sizes and designs, aiming to cater to a wider consumer base. While they may provide temporary relief, over-the-counter night guards may not offer the same level of comfort, fit, and protection as custom-made options.

Benefits of night guards

Protection against enamel damage

One of the primary benefits of night guards is their ability to protect your tooth enamel from the abrasive forces of teeth grinding. By creating a barrier between your teeth, night guards minimize the direct contact that can wear down and damage your enamel over time. This protection can significantly reduce the risk of tooth decay, sensitivity, and other dental complications.

Reduced tooth sensitivity

Teeth grinding can cause increased tooth sensitivity due to enamel erosion. Night guards prevent the wearing down of the enamel, thereby reducing the exposure of sensitive dentin and alleviating tooth sensitivity. By providing a cushioned barrier, night guards help maintain the health and strength of your tooth structure, resulting in reduced sensitivity and discomfort.

Prevention of headaches and jaw pain

Teeth grinding often leads to tension headaches and jaw pain due to the strain on your jaw joints and surrounding muscles. Night guards help to alleviate these symptoms by redistributing the forces exerted during teeth grinding. The cushioning effect of the night guard cushions the impact, reducing muscle tension and providing relief from headaches and jaw pain.

Potential drawbacks of night guards

Discomfort and adjustment period

Some individuals may experience initial discomfort when wearing night guards, especially if they are not accustomed to having an oral appliance in their mouth while sleeping. Additionally, it may take some time to adjust to the sensation and fit of the night guard. However, most people adapt to wearing night guards within a few nights.

Salivation and speech issues

Night guards can sometimes cause excessive salivation, especially in the initial stages. This is a normal reaction to having a foreign object in your mouth, and the excessive saliva typically subsides as your mouth adjusts to the night guard. Additionally, some individuals may experience slight speech difficulties, which also tend to resolve as you become more accustomed to wearing the night guard.

Cleaning and maintenance

Night guards require regular cleaning and maintenance to ensure their effectiveness and longevity. Neglecting proper cleaning can lead to a buildup of bacteria, plaque, and unpleasant odors. It is essential to follow the manufacturer’s instructions or your dentist’s guidance on how to clean your specific night guard properly. Regular inspection and replacement are also crucial to prevent wear and tear.

Caring for your night guard

Daily cleaning

To ensure the hygiene and longevity of your night guard, it is important to clean it daily. Rinse the night guard with warm water to remove any loose debris. Use a mild, non-abrasive toothpaste or denture cleaner specifically designed for night guards and a soft-bristled toothbrush to gently brush the appliance. Thoroughly rinse off any cleaning agents before storing the night guard.

Proper storage

When not in use, it is crucial to store your night guard properly to prevent damage or contamination. Keep it in a clean, dry container with adequate ventilation to promote airflow and minimize the risk of bacterial growth. Avoid exposing the night guard to high temperatures, direct sunlight, or excessive moisture, as these can damage the material.

Regular replacement

Night guards are not meant to last forever, as they can become worn out or lose their effectiveness over time. Regularly inspect your night guard for signs of wear, such as cracks, thinning, or discoloration. Additionally, if you notice any changes in the fit or comfort of your night guard, consult your dentist for a replacement.

How to wear a night guard

Correct positioning

To maximize the effectiveness of your night guard, it is important to wear it correctly. Follow the instructions provided by your dentist or the manufacturer for the specific night guard you have. Typically, the night guard should fit snugly over your upper teeth, allowing your lower teeth to rest comfortably against it without exerting excessive pressure.

Consistent usage

Consistency is key when it comes to wearing night guards. For optimal results, wear your night guard every night as recommended by your dentist. Consistent usage ensures ongoing protection against teeth grinding and helps alleviate associated symptoms. If you have any concerns or notice any changes in your condition, consult your dentist for further guidance.

Following dentist’s instructions

Your dentist will provide specific instructions on how long you should wear your night guard, when to remove it, and how to care for it. It is important to follow these instructions diligently to ensure the longevity and effectiveness of your night guard. Regular dental check-ups will allow your dentist to evaluate the condition of your night guard and make any necessary adjustments.

Other methods to manage teeth grinding

Stress management techniques

As stress is one of the common triggers for teeth grinding, managing stress levels can help reduce the occurrence and intensity of grinding episodes. Engaging in stress-reducing activities such as exercise, meditation, or counseling can contribute to overall relaxation and minimize the likelihood of teeth grinding.

Orthodontic treatment

In cases where misaligned teeth or jaw abnormalities contribute to teeth grinding, orthodontic treatment may be recommended. Correcting the alignment of your teeth and jaws can often alleviate the grinding habit. Your orthodontist can assess your specific needs and design a treatment plan tailored to address the underlying causes of your teeth grinding.

Muscle relaxation exercises

Muscle relaxation exercises can help relax the jaw muscles and reduce tension associated with teeth grinding. Simple techniques such as conscious deep breathing, gentle jaw stretches, and relaxing facial massages can be incorporated into your daily routine. These exercises aim to promote jaw muscle relaxation and relieve stress, ultimately decreasing the incidence of teeth grinding.

In conclusion, night guards are effective tools in managing teeth grinding. They provide a protective barrier, align jaws, and preserve your tooth enamel, reducing the risk of complications such as enamel damage, tooth sensitivity, headaches, and jaw pain. With proper care, regular usage, and professional guidance, night guards can significantly improve your oral health and overall well-being. If you suspect that you are grinding your teeth, consult your dentist for an evaluation and to determine the best course of action to protect your teeth and maintain a healthy smile.