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Muscle Relaxing Injections for Masseter Muscles

The masseter muscle is a large facial muscle that runs from the cheekbone to the lower part of the jaw and is attached to the TMJ (Temporomandibular joint or jaw joint).

It is the key muscle that moves the lower jaw upwards. Individuals that clench or grind their teeth will overwork this muscle, which will make the muscle larger and potentially cause symptoms such as aching or pain.

Muscle relaxing injections put directly into the masseter muscles are an option to help reduce the size of this muscle and any related symptoms. They are extremely effective for those patients who suffer from pain from this muscle. The injections are generally pain-free, and the appointment is completed within 30 minutes. It takes up to six weeks for the injections to work and to see and feel a significant difference, and it will wear off in 3 to 4 months.

This treatment is often combined with splint therapy. 

What is an SCi splint?

An SCi splint is a hard, sectional occlusal splint that is placed over the lower or upper front teeth to reduce overloading of the muscles involved in clenching or grinding habits, by eliminating the contact of the posterior (back) teeth and allowing the muscles to relax.

SCi splints are an effective solution for sufferers of TMD (temporomandibular disorder) and studies have found that these splints significantly reduce muscle activity in 80% of patients, helping to reduce grinding and clenching habits.

This treatment is not a cure for TMD but significantly reduces symptoms. It can be used in combination with muscle relaxing injections in the masseter muscles if these muscles are painful.

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