Masseter Botox
Jawline Slimming – Bruxism Relief – TMJ / Jaw Pain Treatment
Are you seeking a slimmer, more refined jawline — or relief from jaw tension, teeth grinding or TMJ discomfort? At Fethiye Medical Aesthetics Clinic, under the experienced care of Dr. Tuncay Dagel, we offer Masseter Botox, a minimally invasive, non-surgical treatment designed to reshape the lower face, relieve jaw muscle tension, and improve overall comfort. Whether you’re concerned about a square or bulky lower face, chronic teeth clenching, or jaw pain from overactive masseter muscles — Masseter Botox may offer an effective solution tailored to your needs.
Masseter Botox aims to relax and reduce the size of the masseter muscles (the primary chewing muscles on the sides of the jaw). By doing so, it can create a more contoured V-shaped jawline, reduce muscle bulk, and alleviate symptoms such as grinding, jaw pain, headaches or TMJ discomfort. Because the treatment is temporary and adjustable, it provides a flexible option for people who want to test cosmetic or therapeutic benefits before committing to a permanent solution.
What is Masseter Botox?
The masseter is one of the main muscles responsible for chewing and jaw movement — located along the sides of the lower jaw.
In a Masseter Botox procedure, a small amount of botulinum toxin (commonly known by brand names such as Botox, though other neuromodulators may also be used) is injected directly into the masseter muscles on one or both sides of the face.
The toxin works by partially blocking nerve signals to the muscle, reducing its ability to contract fully. Over time, because the muscle is used less, it may shrink (atrophy), leading to a narrower jawline or reduced bulk.
This procedure is often referred to as “jaw slimming,” “masseter reduction,” or “jawline contouring.”
Beyond aesthetics, Masseter Botox can also serve therapeutic purposes — easing discomfort from excessive muscle activity.
Who Could Benefit?
Masseter Botox may be appropriate for individuals who:
Have a wide, square or “bulky” lower face due to prominent masseter muscles and desire a slimmer, more contoured jawline.
Grind or clench their teeth regularly (bruxism), especially at night.
Suffer from jaw pain, tension, or symptoms of Temporomandibular Joint Disorder (TMJ / TMD), such as jaw or ear pain, headaches, or jaw locking.
Want a non-surgical, low-downtime alternative to invasive jaw or facial surgery.
That said — results vary depending on muscle anatomy, skin, bone structure, and how the body responds to Botox; the treatment is not a one-size-fits-all solution.
Benefits of Masseter Botox
✦ Cosmetic / Aesthetic Benefits
Slimmer, more defined jawline — Relaxing and reducing the bulk of masseter muscles can help transform a wide or square lower face into a softer, more contoured V-line or heart-shaped lower face.
Facial balance and harmony — A reduction in lower-face width can bring better proportion relative to cheekbones, chin, and overall facial features.
✦ Therapeutic / Functional Benefits
Relief of jaw tension, clenching, and bruxism — By reducing muscle overactivity, Botox can calm excessive clenching or grinding of teeth, lowering associated discomfort, sensitivity, or tooth wear.
Alleviation of TMJ-related pain — Relaxing the masseter may ease pressure on the jaw joint, reduce headaches, ear or facial pain, and improve jaw mobility in some cases.
Non-surgical and low-downtime — Treatments usually take only 15–30 minutes and require minimal recovery; many patients resume normal activities shortly after.
The Procedure: What to Expect
Before the Treatment
- During your consultation, Dr. Tuncay Dagel will assess your facial anatomy, muscle activity and cosmetic or functional goals.
- You may be asked to stop certain medications or avoid substances (e.g., blood thinners, NSAIDs) to reduce risk of bruising — drinking plenty of water is encouraged.
- The treatment area will be marked. A topical numbing cream may be applied to minimize discomfort.
During the Treatment
- Using a fine needle, small amounts of Botox are injected into specific points in the masseter muscles on one or both sides of the face.
- The procedure typically takes 15–30 minutes and is well tolerated by most patients.
After the Treatment
- Some mild swelling, redness, or bruising at injection sites is possible, but usually subsides within a few hours to days.
- Most people resume normal daily activities right away.
- Results gradually appear over time — reduced jaw muscle bulk may become noticeable in a few days, with full cosmetic and functional effects often visible within 2–4 weeks.
How Long Do Results Last? Maintenance
- The effects of Masseter Botox are temporary. For many individuals, results last about 3–6 months before the masseter muscles gradually regain strength and volume.
- Because of this, maintenance treatments are usually necessary to sustain the desired jawline shape or symptomatic relief.
- If you decide to stop treatments, in most cases the masseter muscles will gradually return to their original size over time.
Possible Risks & Side Effects
While Masseter Botox is generally considered safe when administered by a qualified and experienced provider, it does carry potential risks and drawbacks:
- Temporary discomfort: mild swelling, redness, bruising, tenderness at injection sites.
- Temporary difficulty chewing / weaker bite: especially for hard or chewy foods, while muscle weakness lasts.
- Asymmetry or uneven muscle reduction — if injections are not evenly placed, or if muscle response differs from side to side.
- Unintended diffusion to nearby muscles — risk of affecting muscles involved in smiling or facial expression (e.g. smile asymmetry).
- Over-slimming / “sunken cheeks” or jowling — if the masseter shrinks too much or rapidly, the lower face may lose support, potentially exaggerating hollow cheeks or loose skin over time.
- Need for ongoing maintenance — results are not permanent; discontinuation will gradually reverse the effect.
Because of these possibilities, the skill and experience of the practitioner are crucial. At our clinic, Dr. Tuncay Dagel performs a comprehensive facial assessment and plans a personalized injection strategy to minimize risk and optimize outcomes.
Why Choose Fethiye Medical Aesthetics Clinic / Dr. Tuncay Dagel?
- Expert assessment of facial anatomy, masseter muscle strength, and individual aesthetic goals to create a tailored treatment plan.
- Commitment to safe, precise injections — using proper technique, appropriate dosage, and careful targeting to avoid diffusion into unintended muscles.
- Emphasis on natural-looking results, balancing slimming and contouring with facial harmony and avoiding over-volume loss.
- Careful consultation and aftercare guidance to maximize benefits and minimize side effects.
- Option to combine Masseter Botox with complementary treatments (if needed) — while always prioritizing patient safety and realistic expectations.
Possible Risks & Side Effects
While Masseter Botox is generally considered safe when administered by a qualified and experienced provider, it does carry potential risks and drawbacks:
- Temporary discomfort: mild swelling, redness, bruising, tenderness at injection sites.
- Temporary difficulty chewing / weaker bite: especially for hard or chewy foods, while muscle weakness lasts.
- Asymmetry or uneven muscle reduction — if injections are not evenly placed, or if muscle response differs from side to side.
- Unintended diffusion to nearby muscles — risk of affecting muscles involved in smiling or facial expression (e.g. smile asymmetry).
- Over-slimming / “sunken cheeks” or jowling — if the masseter shrinks too much or rapidly, the lower face may lose support, potentially exaggerating hollow cheeks or loose skin over time.
- Need for ongoing maintenance — results are not permanent; discontinuation will gradually reverse the effect.
Because of these possibilities, the skill and experience of the practitioner are crucial. At our clinic, Dr. Tuncay Dagel performs a comprehensive facial assessment and plans a personalized injection strategy to minimize risk and optimize outcomes.
Next Steps — Consultation & Booking
If you are interested in Masseter Botox — whether for cosmetic contouring, teeth grinding relief, or TMJ-related pain — contact Fethiye Medical Aesthetics Clinic to schedule a personalized consultation with Dr. Tuncay Dagel.
Contact Information
QNB Finansbank Üstü, (Salı Pazarı Yanı) Kesikkapı Mah. Pürşahbey Cad, No:15 A Blok D:5, Fethiye/Muğla
Send a Message
Write to us for personalized medical aesthetic solutions with Dr. Tuncay Dagel.
Frequently Asked Questions (FAQ) About Masseter Botox)
Explore clear and concise answers to the most common questions about Masseter Botox, including how the treatment works, who it’s suitable for, benefits, expected results, and safety information. This FAQ section helps you understand jaw-slimming and bruxism relief treatments so you can feel confident before your consultation.
What is Masseter Botox?
Masseter Botox is a non-surgical treatment where Botox is injected into the masseter muscles (jaw muscles) to slim the lower face, reduce clenching or grinding (bruxism), and relieve jaw tension or TMJ discomfort.
What does Masseter Botox help with?
Masseter Botox can:
Slim and contour a square or wide jaw
Reduce teeth grinding and jaw clenching
Relieve TMJ pain and tension
Soften facial expressions
Improve facial symmetry
How does the treatment work?
Botox relaxes the masseter muscles, reducing their size over time. This creates a slimmer jawline and decreases the pressure caused by grinding and clenching.
Is Masseter Botox painful?
Discomfort is minimal. Most patients feel only a slight pinch during injection. Numbing cream can be applied for additional comfort.
How long does the procedure take?
The treatment is quick—usually 10–15 minutes. You can return to normal activities immediately after.
When will I see results?
You may begin noticing results in 1–2 weeks, but full jawline slimming usually appears after 4–6 weeks as the masseter muscles gradually relax and shrink.
How long do the results last?
Results typically last 4–6 months. With repeated treatments, the muscle may weaken over time, allowing results to last even longer.
Is Masseter Botox safe?
Yes. When performed by an experienced medical professional, Masseter Botox is considered a safe and effective treatment with minimal downtime.
Are there side effects?
Common temporary side effects include mild tenderness, swelling, or small injection marks. Rarely, patients may experience chewing fatigue for a few days.
Will Masseter Botox affect my ability to chew?
Chewing may feel slightly weaker for a short period, especially with hard foods. This usually resolves quickly as your body adapts.
How many units of Botox are needed?
The amount varies depending on muscle strength and aesthetic goals, but most people need 20–50 units per side. Your provider will determine the right dose.
Who is a good candidate for Masseter Botox?
You’re a good candidate if you have:
A wide or square jawline
Teeth grinding or clenching
TMJ discomfort
Hypertrophic (enlarged) masseter muscles
Desire for a slimmer, more V-shaped facial contour without surgery
Can Masseter Botox be combined with other treatments?
Yes. It is often paired with chin fillers, jawline contouring, or cheek fillers for enhanced facial shaping and harmonization.






