
The mentalis muscle is a central muscle of the lower lip, situated at the tip of the chin. It is sometimes called the pouting muscle because it raises the lower lip and causes chin wrinkles. A hyperactive mentalis muscle can lead to chin dimpling, a dimpled or wrinkled appearance on the chin that resembles an orange peel. This can be due to frequent chin movements, habitual facial expressions, or tension in the chin muscle. While Botox injections can temporarily relax the mentalis muscle and smooth the chin, they carry risks such as bruising and difficulty moving the chin or lower lip. In more severe cases, mentalis muscle resuspension surgery may be considered, but it is challenging with modest success rates.
Characteristics and Values Table for Reducing the Mentalis Muscle
| Characteristics | Values |
|---|---|
| Botox injections | Botox can be used to relax the mentalis muscle, reducing chin dimpling and creases |
| Dysport injections | Similar to Botox, Dysport can be used to relax the mentalis muscle and improve the appearance of the chin |
| Lip exercises | Lip exercises can help relax an overactive mentalis muscle |
| Surgery | Mentalis muscle resuspension surgery is possible but has low success rates and is often combined with other procedures |
| Chewing gum | Chewing gum on one side of the mouth can help bring the molars together |
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$15.3 $17.88

Lip exercises
The mentalis muscle is a central muscle of the lower lip, situated at the tip of the chin. It is sometimes referred to as the "pouting muscle" because it raises the lower lip and causes chin wrinkles. Lip incompetence, a condition where one is unable to close their lips together, can be caused by an overactive mentalis muscle. This can be due to nerve damage or muscle weakness.
- The first basic exercise involves producing a voluntary smile, bringing into action the muscles involved in the movements of retraction and elevation of the oral structure. This isotonic exercise involves taking the muscles through their entire range of movement. It can be performed while sitting or standing, with the help of a hand mirror. By practicing this exercise five times a day, complete control of the different levels of smile can be achieved within a few days.
- Tongue Mewing: Press your tongue against your palate, especially the posterior third, and breathe through your nose. Another variation of this exercise is to say the -NG sound while closing your mouth, sealing your lips, and clenching your teeth gently. Breathe through your nose and ensure your tongue isn't touching your front teeth. You can use words like "king" or "sing."
- To maintain facial harmony, it is important to focus not only on the muscles lifting the lip but also on strengthening and conditioning the muscles and skin of the mandibular area. This movement involves the mentalis muscle, among others, and will help prevent a double chin and aging grooves in the lower part of the face.
- The first exercise focuses on the angularis branch, which terminates at the wings of the nose and the anterior part of the upper lip.
- The second exercise conditions the orbitalis branch, which terminates in the upper lip, where its fibres integrate with the orbicularis. It involves the participation of the caput zygomaticum and caninus and will help maintain the lip level and tooth visibility. These two exercises should be performed following smile exercises, strengthening the infraorbital musculature. Results may become visible after 3 to 5 months of diligent daily application.
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Botox injections
The mentalis muscle is a paired muscle originating from the alveolar bone of the mandible. Its hyperactivity can lead to chin dimpling, also known as "peau d'orange" or an orange-peel appearance, due to the underlying muscle contractions. Botox injections target this muscle to reduce its activity and relax the surrounding tissues. This relaxation of the mentalis muscle helps smooth out the overlying skin, reducing the appearance of dimples, creases, and wrinkles.
The injection process typically begins with the application of a local anesthetic to ensure patient comfort. This is followed by precise injections into the mentalis muscle. The number of injections can vary depending on the areas being treated, with each injection site carefully selected to maximize the effects and minimize any potential side effects. The treatment session usually lasts between 10 to 15 minutes, and patients can resume their daily activities immediately afterward.
The results of Botox injections in the mentalis muscle are noticeable within a few days, with the full effects visible after about two weeks. The effects typically last between three to six months, and repeat treatments are recommended to maintain the desired appearance. It is important to consult with a qualified practitioner or a board-certified injector to assess suitability, expected outcomes, and ensure a natural-looking result.
While Botox injections are generally safe, there are some potential side effects to consider. These may include a weakened ability to move the chin or lower lip, affecting expressions, speech, or eating. Over-treatment can result in an unnaturally smooth chin or a lack of natural movement, giving an "overdone" appearance. Other possible side effects include a slight risk of infection, temporary numbness, or a tingling sensation in the treated area.
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Chin surgery
The mentalis muscle is a central muscle of the lower lip, situated at the tip of the chin. It is involved in chin augmentation and chin cleft reduction and narrowing procedures. During chin surgery, the mentalis muscle is preserved and not removed. However, its function and anatomy must be considered to avoid postoperative problems.
Chin Augmentation
The mentalis muscle is relevant in chin augmentation surgery, particularly when implants are involved. The muscle splitting approach can be used, where the muscle is split through its septum rather than cutting its bony attachment. The incisional approach can be intraoral through the mucosa or submental through the skin.
Chin Cleft Reduction and Chin Narrowing
The mentalis muscle imbrication mentoplasty technique is used to reduce the chin width and fill the central soft tissue void that creates the chin cleft. This procedure involves incising the medial edge of the mentalis muscles and separating them from the midline raphe. If the muscles are hypertrophic, debulking can be performed along their deep aspect. The bilateral medial edges of the muscles are then sutured together, and the change in chin width is assessed to adjust the suture positioning. This procedure can be paired with mandibular contouring to create a narrow, smooth, tapered chin that accentuates lower face femininity.
Botox Injections
Botox or Dysport injections can be given before and/or after chin surgery to relax the mentalis muscle and improve the appearance of the chin. This can help to smooth a dimpled chin and improve the appearance of a double chin.
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Avoid overuse
The mentalis muscle is a central muscle of the lower lip, situated at the tip of the chin. It is sometimes referred to as the "pouting muscle" because it raises the lower lip and causes chin wrinkles. In conjunction with the orbicularis oris muscle, the mentalis muscle allows the lips to "pout". The mentalis muscle is also involved in expressing doubt and contempt, as it elevates, everts and protrudes the lower lip.
To reduce the overuse of the mentalis muscle, one can avoid certain behaviours and habits that may contribute to its frequent activation. Here are some specific ways to avoid overuse:
- Be mindful of your facial expressions: Since the mentalis muscle is involved in expressing doubt, contempt, and displeasure, try to be aware of any tendencies to overuse these expressions and make a conscious effort to relax your face when possible.
- Avoid excessive pouting: As the mentalis muscle is closely associated with pouting, minimising this expression can help reduce overuse.
- Manage lip incompetence: In cases of lip incompetence, where the upper and lower lips do not touch at rest, the mentalis muscle contracts to bring temporary oral competence. If this is a concern, consider addressing the underlying causes or exploring alternative solutions to reduce the need for mentalis muscle activation.
- Address bite issues: If you have an overbite, underbite, or open bite, keeping your lips closed can force the mentalis muscle to be overused. Consult a dental professional for advice on managing bite issues effectively.
- Minimise chin wrinkling behaviours: The mentalis muscle is responsible for wrinkling and dimpling the skin on the chin. Be mindful of any habits that may contribute to this, such as excessive chin rubbing or repetitive facial movements, and try to reduce their frequency.
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Chewing with a closed mouth
The mentalis muscle, also known as the "pouting muscle," is a pair of muscles located towards the center of the chin. It controls the movement of the lower lip and allows us to pout by raising the lower lip and causing chin wrinkles. Chewing with a closed mouth can help relax the mentalis muscle and reduce strain, especially when combined with proper tongue positioning and breathing techniques.
To chew with a closed mouth, it is essential to develop healthy habits from an early age. Breastfeeding, bottle feeding with paced feeding techniques, and baby-led weaning protocols can all contribute to proper oral motor development. As children grow, it is beneficial to encourage them to eat tougher-to-chew foods, such as jerky and fruit leathers, to strengthen their jaws.
Additionally, practicing proper swallowing patterns is crucial. It is recommended to chew food at least 20 times before swallowing and to breathe through the nose while chewing, if possible. These practices promote overall health and reduce the risk of improper jaw and facial development.
By adopting these habits and techniques, individuals can improve their oral health, reduce mentalis muscle strain, and promote overall well-being. Chewing with a closed mouth is a simple yet impactful practice that can have positive effects on both facial aesthetics and digestive health.
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Frequently asked questions
The mentalis muscle is a central muscle of the lower lip, situated at the tip of the chin. It is sometimes referred to as the "pouting muscle" as it raises the lower lip and causes chin wrinkles.
An overactive mentalis muscle can be caused by habitual facial expressions, frequent chin movements, or tension in the chin muscle, leading to repeated muscle contractions. It can also be caused by a noticeable overbite, underbite, or open bite, as keeping the lips closed forces the mentalis muscle to be overused.
Lip exercises can help relax an overactive mentalis muscle. These exercises are meant to be done over a few months. Botox injections are another option to temporarily relax the muscle and smooth out the skin.
Mentalis muscle resuspension surgery is an option for severe cases, but it is challenging with modest success rates and often needs to be combined with other procedures for effectiveness.











































