TMJ Splint vs Night Guard: Key Differences Explained

Splint and night guard are often used interchangeably, but their functions are slightly different. If you are suffering from bruxism or TMJ, it is essential to comprehend the difference between a TMJ splint and a night guard to help you alleviate your condition.

In general, the purpose of both types is to stabilize and support the joints and muscles in order to prevent malocclusion, or the improper positioning of teeth when the jaws are closed. TMJ splints offer greater vertical support than night guards and guide the lower jaw into a more natural, comfortable position.

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What Is the Difference Between a TMJ Splint and a Night Guard?

TMJ disorder can affect everyone, and if you are unclear whether you need a night guard or a TMJ splint, your dentist will examine you thoroughly and explain your options. A night guard and a TMJ splint are two dental devices designed to meet the diverse needs of patients with TMJ.

Both splints and night guards are used to prevent teeth grinding, yet they have different functions. A TMJ splint is customized for each patient and helps to stabilize the jaw, whereas a night guard primarily protects the teeth from grinding. If you are experiencing symptoms of bruxism or TMJ, you should contact your dentist to establish which type of protection is appropriate.

Types of TMJ Splints

Stabilization Splint

Stabilization splints, also known as permissive splints, are designed to avoid harmful contact between teeth and provide a bite surface that is compatible with the jaw joints. This alleviates pain by allowing the jaw muscles to relax.

Repositioning Splint

True to their name, repositioning splints attempt to realign the jaw to its ideal position. Your teeth will not slide across the biting plane because of the indentations on these devices.

NTI-tss Device

A NTI-tss (Nociceptive Trigeminal Inhibition Tension Suppression System) device is worn exclusively on the top front teeth to reduce clenching and grinding. This type of appliance is notably beneficial for reducing migraines and headaches associated with facial pain. Due to the fact that it only fits on a few teeth, it places them under considerable stress, which might be damaging. Due to its small size, there is a risk of ingestion or aspiration if it falls off during the night.

Occlusal TMJ Splint

Using an occlusal bite splint, you can reposition your lower jaw into a more natural position, allowing your jaw joint and muscles to relax. This TMJ splint releases the muscles gradually and is primarily worn while sleeping.

According to the National Institutes of Health, "if a splint is needed, it should be worn for a brief amount of time and should not cause permanent changes in the bite." If a splint causes or worsens pain, you should discontinue use and consult with the practitioner who fabricated it.

Types of Night Guards

Soft Night Guard

A soft night guard is made from a rubber-like, malleable material. This type decreases symptoms of teeth grinding by creating a soft barrier between the teeth. It is typically recommended for those with mild bruxism.

Hybrid Night Guard

The interior of a hybrid night guard is made of soft rubber material, while the exterior is made of hard acrylic material. It functions as a barrier between the teeth, with a more comfortable inside and a strong bite surface. People who grind moderately or heavily are advised to wear this night guard.

Hard Night Guard

Acrylic is used for the inner and exterior of a hard night guard. Acrylic material is frequently recommended for the heaviest grinders due to its remarkable durability.

Get the Right TMJ or Bruxism Appliance in Gilbert, AZ

If you are experiencing any of the symptoms associated with bruxism or TMJ, it is important to consult with your dentist in Gilbert. Dr. John A. Garza DDS, LVIF, FIAPA, FICOI can help you understand the difference between a TMJ splint and a night guard and determine which treatment option is best for your specific case. Schedule an appointment at our Gilbert dental office today — no referral needed. Call (480) 539-7979 or book online anytime.

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About the Author

Dr. John A. Garza DDS, LVIF, FIAPA, FICOI has been practicing dentistry in Gilbert, AZ since 1994. He is highly trained in neuromuscular and physiologic dentistry, with extensive experience diagnosing and treating TMJ disorder, bruxism, and jaw dysfunction at his Gilbert dental practice. 754 S Val Vista Dr, Ste 106, Gilbert, AZ 85296 | (480) 539-7979 | Welcoming new patients.