Hair Transplant 
Dental Aesthetics 
Facial Aesthetics 
Body Contouring 
TMJ Treatment 
Eye & Eyelid Surgery 
Mummy Makeover 
Obesity Treatment 
Orthopedics 
Botulinum toxin injections into the chewing muscles are used to reduce the force of severe clenching and grinding when a splint, physiotherapy and habit change have not brought enough relief. Small doses injected into the masseter — and sometimes the temporalis — muscle weaken the muscle temporarily, which for many people reduces muscle pain, morning tightness and clenching-related headaches. The effect is temporary, typically lasting a few months, and the treatment manages symptoms rather than curing the underlying habit. It is used as part of a wider TMJ plan, not on its own.
Is this treatment right for you?
Suitable for: adults with severe clenching or grinding and muscle-related jaw pain that has not responded adequately to splint therapy, physiotherapy and habit change.
Less ideal if: you are pregnant or breastfeeding, you have a neuromuscular condition affecting the muscles, you have an infection at the injection site, or your jaw pain comes from inside the joint rather than from the chewing muscles.
Suitability can only be confirmed by a qualified clinician after assessing you, which is why every plan begins with a free, personalised review rather than a fixed promise.
Benefits & risks
A balanced view matters more than a sales pitch. Weigh both sides and discuss them with a clinician before deciding.
Potential benefits
- Can substantially reduce clenching force and the muscle pain that comes with it
- Often eases morning jaw tightness and clenching-related headaches
- Quick to carry out, with no anaesthetic, incisions or downtime
- Reduces grinding load on teeth and dental work while it is active
- Reversible in the sense that the effect wears off rather than being permanent
- Can be combined with splint therapy and physiotherapy as part of a wider plan
Risks & considerations
- Bruising, swelling or tenderness at the injection sites
- Temporary weakness when chewing firm or chewy foods, usually for a few weeks
- Headache or a heavy sensation in the jaw in the first days after treatment
- Asymmetry or an altered smile if the toxin affects neighbouring muscles of expression
- Thinning of the chewing muscles and changes to facial contour with repeated long-term use
- The effect is temporary, so symptoms usually return as it wears off
Am I a candidate?
- You have severe, ongoing clenching or grinding with muscle-related pain
- You have already tried a splint, physiotherapy or habit change without enough relief
- Your pain has been assessed as muscular rather than coming from inside the joint
- You are not pregnant or breastfeeding and have no neuromuscular condition
- You understand that the effect is temporary and that repeat sessions would be needed to maintain it
Only a qualified clinician can confirm suitability after a personal assessment.
Process & recovery
Treatment is carried out in a clinic setting and takes around fifteen to thirty minutes. The chewing muscles are examined and marked while you clench, and small volumes of botulinum toxin are injected at several points into the masseter on each side, with the temporalis included where it is also involved. No anaesthetic is usually needed beyond, at most, a topical cream, and you can return to normal activity the same day, avoiding rubbing the area, strenuous exercise and lying flat for a few hours. The effect builds over roughly one to two weeks and generally wears off over three to six months, so repeat treatment is needed to maintain it. Risks include bruising, tenderness, headache, temporary weakness when chewing firm foods, an altered smile or asymmetry if the toxin spreads to neighbouring muscles, and — with repeated long-term use — visible thinning of the chewing muscles and changes to facial shape.
When injections are considered
Botulinum toxin is not a first-line treatment for a temporomandibular disorder. Most jaw pain settles with an occlusal splint, physiotherapy, habit change and time, and those measures have the advantage of being non-invasive and repeatable at no ongoing cost. Injections come into the conversation when clenching is severe, the chewing muscles are painful and enlarged, and a fair trial of conservative treatment has not given enough relief.
The distinction that matters most is where your pain comes from. Injections act on muscle, so they can help muscle pain and the consequences of heavy clenching. They do not treat a disc that catches inside the joint, arthritis in the joint surfaces or a mechanically restricted opening — problems for which other options are more appropriate. An assessment that separates muscle pain from joint pain is therefore the deciding step.
What happens on the day
The treating doctor examines and marks the chewing muscles while you clench, so the injection points sit within the bulk of the muscle and away from the muscles of facial expression. Several small injections are given into the masseter on each side, and into the temporalis where it is also involved. The needle is fine and most people describe brief stinging rather than pain; a topical numbing cream can be used.
Afterwards you sit up for a short period and can return to ordinary activity the same day. You are usually asked not to rub or massage the area, to avoid strenuous exercise and saunas for the rest of the day, and to avoid lying flat for a few hours.
The timeline
| Stage | What is typical |
|---|---|
| Days 0–3 | Small marks or bruising may be visible; the muscles still feel normal, as the effect has not yet developed |
| Week 1 | Clenching begins to feel less powerful; some people notice a mild headache or heavy sensation |
| Week 2 | Full effect; muscle pain and morning tightness often reduced, firm foods feel harder to chew |
| Months 3–6 | The effect wears off gradually and muscle activity returns; symptoms commonly return with it |
An honest view of the trade-offs
Botulinum toxin used for jaw clenching is a symptom-management treatment. Its strengths are that it works quickly, needs no downtime and can break a cycle of pain that has not responded to anything else. Its limitations are equally clear: the effect is temporary, maintaining it means repeating treatment indefinitely, and repeated treatment over years can thin the chewing muscles and alter facial contour. It also does nothing to protect the teeth directly, which is why a splint usually continues alongside it.
Because of those trade-offs, the treating doctor will normally plan injections as one part of a broader approach — alongside a splint, physiotherapy and habit change — and will reassess rather than simply repeating them if they are not delivering meaningful benefit.
Having treatment in Türkiye
As a medical travel facilitator, we coordinate this treatment at accredited, Ministry of Health–authorised partner clinics in Türkiye. Before you travel, your symptoms, previous treatment and any imaging are reviewed so the treating doctor can advise whether injections are appropriate for your type of pain — and say so plainly if they are not.
Packages are all-inclusive and transparent, typically covering treatment, hotel accommodation, airport and clinic transfers, and an English-speaking coordinator at every appointment. Because the full effect takes one to two weeks to develop, the review is usually carried out remotely after you return home — see your patient journey for how a typical visit is organised.
This page is for general information and is not a substitute for personalised medical advice; suitability can only be confirmed after an individual assessment.
Frequently asked questions
How does botulinum toxin help jaw clenching? +
Botulinum toxin temporarily reduces the signal from nerve to muscle, so the injected chewing muscle contracts less forcefully. That lowers the load placed on the jaw joints, muscles and teeth during clenching and grinding, which for many people reduces muscle pain and morning tightness. It does not stop the habit itself, and it does not treat problems arising inside the joint.
How long does the effect last? +
Typically three to six months, varying between individuals and with the dose used. The effect builds over about one to two weeks, plateaus, and then wears off gradually as normal muscle function returns. Maintaining the benefit means repeating treatment, which is one of the trade-offs to weigh before starting.
Will it change the shape of my face? +
It can. The masseter is a facial muscle, and reducing its activity over repeated treatments can make it thinner, which some people notice as a narrower lower face. Whether that is welcome, unwelcome or irrelevant depends on you, and it should be discussed before treatment rather than discovered afterwards.
Is chewing affected? +
Usually only mildly. Most people chew normally on soft and everyday foods but notice that firm, chewy foods such as steak, crusty bread or tough nuts feel harder work for a few weeks. Marked difficulty chewing is uncommon and should be reported.
Is this treatment instead of a splint? +
No. Injections are generally used alongside a splint and physiotherapy rather than replacing them, and are considered when those measures have not given enough relief. A splint continues to protect the teeth, which injections do not do directly.
How long do I need to stay in Türkiye? +
The injections themselves take under half an hour and need no recovery time, so they are usually scheduled within a short stay of around two to four days alongside your assessment and any splint work. Because the full effect takes one to two weeks, the review is normally carried out remotely. Your personalised plan confirms the schedule.
When will I notice a difference? +
Most people notice the muscles feeling less powerful within about a week, with the full effect at roughly two weeks. Pain relief often follows a little behind the change in muscle activity. If there is no useful change after a full two weeks, that is worth reporting, as it suggests the pain may not be coming mainly from the chewing muscles.