TMJ & Jaw
Botox for Jaw Pain & Bruxism
Botulinum toxin injections into the jaw muscles are used therapeutically to reduce muscle overactivity associated with clenching and grinding. This is a management tool, considered on an individual basis when other conservative measures have not provided adequate relief.
What is botulinum toxin?
Botulinum toxin is a prescription medication that, when injected in small amounts into a specific muscle, temporarily reduces the activity of that muscle. It works by blocking the nerve signals that cause the muscle to contract. The effect is not permanent, it wears off over several months, and the muscle gradually returns to its normal function.
In dentistry, botulinum toxin is used therapeutically, specifically to address overactivity in the muscles involved in jaw clenching and grinding.
How it may help with jaw muscle concerns
The masseter muscle, located at the side of the jaw, is one of the primary muscles involved in chewing and is also a major contributor to the force generated during clenching and grinding. In patients with bruxism or chronic jaw muscle pain, the masseter can become hypertrophied (enlarged) and chronically tense from sustained overuse.
Injecting botulinum toxin into the masseter on each side can reduce its contractile force. This may:
- Reduce jaw muscle pain and soreness associated with clenching
- Decrease the intensity of headaches that are related to jaw muscle tension
- Reduce the load placed on the teeth and jaw joint from grinding
In some patients treated over time, the masseter muscle may also reduce somewhat in bulk, this is a secondary effect of reduced use, not the goal of treatment in this context.
What botulinum toxin does not address
Botulinum toxin reduces muscle activity but does not address the underlying causes of bruxism. Bruxism may be related to stress, sleep disorders, bite discrepancies, or other factors, and these are not altered by the injection itself.
As such, this treatment is considered a management tool rather than a long-term resolution. It is typically used alongside other approaches, such as a night guard, physiotherapy, or stress management, rather than as a standalone solution.
What the treatment involves
The procedure involves a small number of injections into the masseter muscles on both sides of the jaw. The appointment is brief and does not require anesthetic, though the injections may cause a mild, temporary discomfort at the injection site.
The effect takes time to develop, most patients notice a change in muscle activity within one to two weeks of treatment. The effect then gradually wears off over several months. For patients who benefit from the treatment, repeat injections may be recommended to maintain the effect over time.
Is this treatment right for everyone?
Botulinum toxin for jaw muscle pain is considered on a case-by-case basis. It may be appropriate for patients who:
- Have documented jaw muscle pain or bruxism that has not responded adequately to other conservative measures
- Have been assessed and have a clinical finding consistent with masseter muscle hyperactivity
- Understand the temporary nature of the effect and are prepared to consider ongoing treatment if beneficial
It is not suitable for all patients, and contraindications exist, including certain neuromuscular conditions and pregnancy. A thorough discussion and review of your medical history takes place before this treatment is offered.
A note on the therapeutic context
When botulinum toxin is used at Wildwood Dental Clinic, it is used exclusively in a therapeutic context, to address jaw muscle pain and the effects of bruxism. It is not offered or administered for cosmetic purposes.
This treatment is performed by clinicians who have completed relevant training in its therapeutic use in the dental context.
Have questions about this treatment?
Call 306.374.7272 or book an appointment.