Botox® For TMJ

Jaw pain is one of the few things people carry for years without mentioning to anyone. It gets attributed to stress, to sleeping badly, to a headache that will pass, and by the time most patients raise it they have been clenching or grinding for a long time and have the worn teeth to show for it.

The muscles doing that work are treatable, and for a substantial number of patients that is the whole answer. For others it is part of the answer. Which of those you are depends on where your pain is actually coming from, and that is what a proper assessment establishes before anything is injected.

Sam Assassa, MD is board certified in Internal Medicine, which matters when it comes to a functional complaint rather than a cosmetic one. He received his medical degree with honors from Damascus University, completed his internship at Loyola University affiliated hospitals in Chicago and his residency at Case Western Reserve University affiliated hospitals in Cleveland, and has practiced in Los Angeles since founding Beverly Hills Aesthetics in 1995.

He founded the American Association of Aesthetic Medicine and Surgery and has served as its President since 2006, developed SweatZap™ for excessive underarm sweating, and has performed more than 25,000 procedures across both the cosmetic and functional applications of botulinum toxin. He is a contributor to PRIME Journal: Plastic and Reconstructive Aesthetic Medicine and has directed hands-on training courses for physicians in more than 15 countries.

“Patients come in about their jaw and leave surprised that their headaches stopped. Most of them have been grinding for years before anybody looked at the muscle actually doing it.” — Sam Assassa, MD

What the TMJ Is and Why It Hurts

The temporomandibular joint is the hinge connecting your jaw to your skull, sitting just in front of each ear. It lets you chew, speak, and yawn, and it is in near constant use from the moment you wake.

It is also unusually sensitive to stress, physical and emotional alike. Under stress many people clench during the day and grind at night without any awareness of it, which keeps the surrounding muscles contracted for hours at a stretch. Those muscles become overworked, enlarged, and painful in exactly the way any muscle would if it were never allowed to rest.

The resulting pain is rarely confined to the joint itself. It commonly presents as aching along the jaw, tension headaches beginning at the temples, pain radiating into the neck or shoulder, clicking or locking when opening the mouth, difficulty chewing, and teeth that are visibly worn, chipped, or sensitive.

Muscle Problem or Joint Problem

This is the distinction that determines whether this treatment will help you, and most pages on this subject skip it entirely.

Muscular TMD is pain originating in the muscles that move the jaw, driven by overuse from clenching and grinding. The jaw joint itself is structurally fine. The pain is typically a deep ache along the sides of the face, worse in the morning or after a stressful period, often with tenderness when the muscle is pressed. This is what responds to Botox®, because the treatment reduces the overactivity causing the pain.

Joint-related TMD is a problem within the joint itself. The disc that cushions it may have displaced, the joint surfaces may be arthritic, or there may be structural damage. This more often produces clicking, popping, locking, or a jaw that catches when opening, and pain localised to the joint rather than spread across the muscle.

Relaxing the muscle in a patient whose problem is inside the joint reduces symptoms without addressing the cause. It can still be worth doing, since the muscle is usually overworking to compensate, but it will not be sufficient on its own and you should know that before starting rather than after three rounds.

Most patients have some of both, and the proportion determines the plan.

How Botox® Relieves Jaw Tension

The masseter is the primary chewing muscle, running along the outer jaw from the cheekbone to the angle of the mandible. It is proportionally one of the strongest muscles in the body, and in patients who clench or grind it is doing far more work than it was built to do.

Injecting a neuromodulator into the masseter reduces how forcefully it can contract. It does not paralyse the muscle, and normal chewing continues. What it removes is the capacity for the sustained, high-force clenching that produces the pain and the dental wear.

Relief typically begins within several days and is fullest at around two weeks. Most patients notice the jaw ache easing first, then realise a week or two later that their morning headaches have become less frequent or stopped.

Please note: treatment of TMJ disorder and bruxism with botulinum toxin is an off-label application. These products carry FDA approval for a number of indications, including chronic migraine and severe underarm hyperhidrosis, and TMJ is not among them. Off-label use of an approved medication is legal and common throughout medicine, and it is discussed in full at your consultation so you understand what is being recommended and why.

Botox® for Teeth Grinding and Bruxism

Bruxism is grinding or clenching, usually during sleep, and it can occur with or without a TMJ disorder. The two frequently travel together.

The consequences accumulate quietly. Enamel wears away, teeth chip or crack, existing crowns and fillings fail earlier than they should, and patients wake with a sore jaw and a headache they attribute to sleep quality. Reducing the force the masseter can generate protects the teeth from the damage the grinding causes, which is why this treatment interests dentists as much as it interests aesthetic physicians.

A night guard protects the teeth from the grinding. Treating the muscle reduces the grinding itself. They address the same problem from opposite directions and work well together.

The Jawline Change That Comes With It

Patients who clench and grind for years often develop enlarged masseter muscles, which widens and squares the lower face. Many assume this is bone structure or weight, and in these patients it is muscle.

As the masseter reduces in size with repeated treatment, the lower face gradually narrows into a more tapered shape. This develops over weeks to months rather than appearing immediately, and it is the reason a significant number of patients who begin treatment for pain continue for the appearance.

If facial shape rather than pain is your primary concern, that is covered on the jaw slimming page.

Where Botox® Fits Among TMJ Treatments

Worth being straightforward about, because TMJ disorder has several causes and muscle overactivity is only one of them.

Botox® is most often used alongside other TMJ care rather than instead of it, with a night guard, physical therapy, stress management, or dental treatment where the bite is contributing. In patients whose problem is genuinely muscular, treating the muscle is frequently sufficient on its own.

Where the joint itself is damaged, where the disc has displaced, or where the bite is structurally misaligned, dental or specialist evaluation is appropriate alongside treatment. That assessment happens at consultation rather than after treatment has underperformed.

What to Expect From Treatment

Treatment takes roughly fifteen minutes. Injections are placed into the masseter on each side, with dosing set by how large and how strong the muscle is, which is assessed by having you clench while the muscle is palpated. Men and patients with substantial masseter enlargement typically require more.

Relief develops over several days and is fullest at around two weeks. Results generally last three to four months, and patients treated repeatedly often find the interval lengthens, since a muscle regularly kept from full contraction gradually reduces in bulk and strength.

There is no downtime. Most patients return to normal activity immediately.

Botox® for TMJ Risks and Safety

Common effects include temporary bruising, swelling, and tenderness at the injection sites, and occasionally headache in the first day or two.

Specific to this area, some patients notice reduced bite strength or fatigue when chewing tough foods during the first weeks, which resolves as the effect settles. Excessive dosing or imprecise placement can affect neighbouring muscles, producing temporary changes in smile or facial expression.

Over time, substantial masseter reduction changes the appearance of the midface in ways not every patient wants, particularly in patients who are already thin through the cheeks. That is part of why dosing here is built up gradually rather than started high.

Patients with neuromuscular conditions, patients who are pregnant or breastfeeding, and patients with an infection at the injection site should discuss this before treatment. Individual results vary and no outcome can be guaranteed.

Frequently Asked Questions About Botox® for TMJ

How long does Botox® for TMJ last?

Generally three to four months, with relief beginning within several days and reaching its fullest at about two weeks. Many patients find the interval lengthens after several rounds, because a masseter that is repeatedly relaxed gradually loses bulk and strength and requires less frequent maintenance. Patients who began at three-month intervals frequently move to twice a year over time.

Will Botox® for TMJ affect my ability to chew?

Normal chewing continues, since the treatment reduces the force the muscle can generate rather than paralysing it. Some patients notice their jaw tires more easily with tough or chewy foods during the first few weeks, which settles as the effect balances. If you eat something requiring sustained heavy chewing you may notice it. Eating normally, you generally will not.

Is Botox® FDA approved for TMJ?

No. Botox® carries FDA approval for several indications including chronic migraine and severe underarm sweating, and TMJ is not among them, which makes this an off-label use. Off-label prescribing of an approved medication is legal, common across medicine, and well established in this particular application. It is raised at your consultation rather than left for you to discover.

How do I know if my jaw pain is muscular or coming from the joint?

The pattern usually points one way or the other. Muscular pain tends to be a deep ache along the sides of the face, worse in the morning or during stressful periods, with tenderness when the muscle is pressed. Joint pain is more often localised in front of the ear and comes with clicking, popping, or a jaw that catches or locks when opening. Examination establishes which predominates, and it matters because Botox® addresses the first directly and the second only indirectly.

Will treating my TMJ change the shape of my face?

Frequently yes, and most patients regard it as a benefit. Years of clenching enlarge the masseter, which widens and squares the lower face, and as the muscle reduces with treatment the jawline gradually narrows. This develops over weeks to months rather than immediately. In patients already very thin through the midface, substantial reduction is not always desirable, which is one reason dosing is built up gradually rather than started at a maximum.

Can I have Botox® for TMJ if I already wear a night guard?

Yes, and the two work well together because they solve different halves of the problem. A night guard protects your teeth from the grinding. Treating the masseter reduces how hard you grind in the first place. Patients whose night guard is wearing through quickly are often the ones who benefit most from treating the muscle.

Why Patients Choose Beverly Hills Aesthetics for TMJ Treatment

• Cause Assessed First: Muscular and joint-related TMD distinguished before treatment is recommended.
• Physician Performed: Dr. Assassa evaluates the muscle and injects it himself.
• Dosing By Examination: Set by palpating the masseter while you clench, not by a standard protocol.
• Functional And Cosmetic Experience: Three decades across both therapeutic and aesthetic applications of botulinum toxin.
• Honest Positioning: Presented as part of TMJ care where that is appropriate, not as a replacement for it.

Schedule a TMJ Consultation in Beverly Hills

If you wake with a sore jaw, get headaches that begin at your temples, or have been told your teeth are wearing, the muscle doing that work can be treated. Dr. Assassa will examine your masseter, establish how much of your pain is muscular, and tell you honestly whether this treatment is likely to be enough on its own. Beverly Hills Aesthetics serves patients from Beverly Hills, Los Angeles, West Hollywood, and Century City. Request a consultation or schedule your appointment online.

Botox® and Botox® Cosmetic are registered trademarks of Allergan, an AbbVie company. Beverly Hills Aesthetics is not affiliated with, endorsed by, or sponsored by AbbVie.