Masseter Botox (Jaw Botox)

The masseter muscles are located on both sides of the chin region. The masseter muscle, the strongest chewing muscle, can become so enlarged for various reasons that it becomes visible and prominent even from the outside. When this muscle is overworked, it also causes pain in the jaw joint and noise from the jaw joint. In addition, aesthetically, especially in women, it can cause an undesirable masculine, masculine appearance due to the prominence in the chin. This enlargement of the masseter muscle is called masseter hypertrophy (masseter enlargement).

The most common cause of masseter hypertrophy is clenching and grinding of teeth for various reasonsIn addition to the problem of masseter enlargement, excessive clenching, known as bruxism, is a condition that can also damage the teeth and jaw.

Masseter Botox, which is applied for the treatment of this teeth clenching (bruxism) disorder, is an aesthetic procedure in which the lower part of the face where the masseter muscle is located is thinned. In this application, also known as chin botox, it is aimed to treat deformities in the lower part of the face.

With the chin botox application, the masculine and hard appearance and square shape of the face are reduced depending on the prominence of the masseter muscles.

Excessive enlargement of the masseter muscle can cause both aesthetic and physical discomfort. Therefore, this procedure, also known as clenching botox, is sometimes applied with the aim of both shape and functional treatment.

What are the Advantages and Benefits of Chin Botox (Masseter Botox)?

• Chin botox is a very safe procedure. As it is non-surgical, it has no side effects and complications. It is a non-surgical aesthetic procedure that slims the jaw shape.
• The procedure lasts 10 minutes, after the procedure, you can return to daily life immediately.
• It provides a slimmer and oval face appearance by thinning the chin structure.
• It prevents pain caused by jaw clenching and teeth grinding.
• The size of the jaw muscles shrinks. Provides a slim and defined jaw line.
• It is an effective treatment of bruxism (involuntary clenching).

How does Chin Botox Treatment (Masseter Botox) work?

Hypertrophic masseter muscles give a hard, square-like appearance to the area called the “Mandibular angle” or “Jaw angle” in the lower facial line. Botox is used to soften the appearance by relaxing these muscles.

Botox injected into the masseter muscle reduces muscle strength. Botox prevents the nerve impulse from being transmitted to the muscle. In this case, the contraction of the muscle stops and the overwork of the masseter muscle decreases and the muscle begins to return to its original size. After the procedure, since it cannot contract as strongly as before, it is not possible for it to expand and its volume decreases over time.

How is Chin Botox (Masseter Botox) Performed?

This non-surgical procedure involves injecting Botox into the masseter muscle with the help of fine-tipped needles. The procedure, which takes place in a short time, does not prevent you from continuing your daily life from where you left off. The procedure takes a maximum of 10 minutes. There are no significant side effects after treatment, and complaints such as mild pain, burning and bruising may rarely occur.

Who Can Have Chin Botox (Masseter Botox)?

Adults who are dissatisfied with the shape of the jaw, who have aesthetic concerns caused by the growth of the masseter muscle and who do not have a disease that prevents the application can have this procedure. It is also a very effective method in the treatment of bruxism (tooth clenching). However, chin botox is not recommended for pregnant or nursing mothers and individuals who are not in good general health.

What is Bruxism, How is It Treated with Jaw Botox (Masseter Botox)?

Bruxism is the act of grinding and clenching teeth involuntarily while awake or asleep. It can be caused by stress, personal characteristics, sleep pattern problems, sleep apnea and similar reasons.

Bruxism can lead to headache. It causes pain in the jaw joint region and related muscles in this area because it overstrains the masseter muscles. If untreated, it can progress to jaw joint disorder.

Bruxism can damage the teeth in its later stages and shorten the size of the teeth In this case, the distance between the chin tip and nose decreases and may cause facial aesthetic problems. As a result of long-term Bruxism, the massater muscle expands in volume due to continuous squeezing. This causes the facial structure to appear wider and square.

Chin Botox treatment helps to relax the hypertrophied muscle and position the jaw correctly.

How Long Does Chin Botox (Masseter Botox) Treatment Take?

The procedure is performed in an average of 10 minutes. The patient can return to daily life immediately after the treatment.

How Long After Chin Botox (Masseter Botox) Takes Effect?

The effect of chin botox usually starts to be seen in 12-72 hours and reaches maximum effect in two weeks.

How Long Does the Effect of Chin Botox (Masseter Botox) Last?

The effect of masseter Botox lasts on average 6-8 months in most patients. The treatment needs to be repeated to maintain the effect Repeated 3 times at 6 month intervals can greatly reduce your need.  The effect of jaw botox may depend on the individual, the severity of the clenching and the intensity of the muscles.

Is Chin Botox (Masseter Botox) a Painful Procedure?

Masseter botox treatment does not cause pain and soreness. Most patients may not even need to use anesthetic cream during Botox injection.

What Should Be Considered After Chin Botox (Masseter Botox)?

After the process, we can list the things you should keep in mind as follows:

• Botox starts to show its visible effect from the 7th day. We should be aware of this and wait for the first week and the following week.
• For the first few hours, hard food should not be chewed to avoid stretching the muscles.
• The area where Botox is applied should not be massaged.

What are the Risks of Chin Botox (Masseter Botox)?

Chin Botox (Masseter Botox) is a risk-free procedure under the right conditions. However, it is not recommended for pregnant women, nursing mothers, people with active dental and skin infections and people in poor general health. If the procedure is not performed by experienced and specialized people, it can lead to temporary smile asymmetry due to the injection affecting the wrong muscles.

What are the Differences between Chin Botox (Masseter Botox) and Chin Reduction Surgery?

Botox procedure is a non-surgical, incisionless, seamless aesthetic procedure. Chin reduction surgery is a surgical operation that involves incision or shaving of the jawbone to reshape it. Chin reduction with masseter botox can provide a natural and slim appearance without any incisions or risk of complications. Chin reduction surgery may involve some risks, as with any surgery.

Authoring Dentist: Phd. Dr. Fuad NAJAFI

The content on this page is for informational purposes only.

For diagnosis and treatment, you should consult your dentist.

This page was last updated on 29.01.2026.