The mentalis muscle originates at the level of the lower anterior mandibular incisors and travels inferiorly to insert into the skin of the chin. The mentalis is a paired muscle that elevates and protrudes the central portion of the lower lip.
The levator labii superioris muscle, also known as the quadratus labii, contributes to facial expression and movement of the mouth and upper lip. It courses alongside the lateral aspect of the nose, and its primary function is elevation of the upper lip.
The mentalis muscle is involved in expressing doubt and contempt, as it elevates, everts and protrudes the lower lip, and wrinkles the skin of the chin.
The buccal branch of the facial nerve, or cranial nerve VII, provides motor innervation to the orbicularis oris and elevators of the lip and lip angle. The majority of muscles responsible for depression of the lip are supplied via the marginal mandibular branch of the facial nerve.
The depressor labii inferioris, sometimes referred to as the quadratus labii inferioris, is a facial muscle whose function is to assist in the downward motion of the lower lip. A significant amount of fat is interspersed between the fibers of this muscle.
Mentalis muscle
It is vascularized by the inferior labial branch of facial artery and mental branch of the maxillary artery (via inferior alveolar artery). The mentalis muscle acts to depress and evert the base of the lower lip, while also creating wrinkles on the skin of the chin.
An inability to move the muscles of the face on one or both sides is known as facial paralysis. Facial paralysis can result from nerve damage due to congenital (present at birth) conditions, trauma or disease, such as stroke, brain tumor or Bell's palsy.
The mental nerve supplies the sensation of the chin and lower lip (8, 9). Any pathological process affecting the mental nerve and the mandibular nerve may lead to paresthesia of the chin, lower lip, and gingival mucosa.
The vagal nerves carry signals between your brain, heart and digestive system. They're a key part of your parasympathetic nervous system. Vagus nerve damage can lead to gastroparesis, food not moving into your intestines. Some people with vasovagal syncope faint from low blood pressure.
A lower lip lift, in general, is done by excising skin with the idea that we're going to change the contours of the lip. While not as common as an upper lip lift, a lower lip lift can help patients with thin lower lips that may not be a good candidate for lip fillers.
Damage to either nerve can lead to numbness and pain of the lip, mucosa and tongue, as well as loss of taste. These deficits can result in significant functional and social difficulties.
5. Nerve damage. Neuropathy can be caused by physical damage to the skin, such as a burn. If the lips are exposed to extreme heat or cold, are sunburnt, or come into contact with a toxic substance such as bleach, it may damage the nerves and lead to tingling, numbness, and pain.
Loss of sensation in the lower lip is a common symptom. Frequently, it can be ascribed to orosurgical procedures carried out in the region of the inferior alveolar nerve or its mental branch. Additionally, trauma, haematoma or acute infections may be the cause of the problem.
Non-surgical treatment options include injections of dermal fillers and botulinum toxin type-A (BoNT-A). Whether injected into the lips or part of a larger rejuvenation of the lower face (cheeks, nasolabial folds, jaw), filler can lift and shape the area by adding volume.
Time matters when it comes to facial paralysis
Many patients – and even some doctors – believe that nerves cannot be recovered or repaired. This just isn't true. It is very possible to repair or replace damaged facial nerves or muscles to restore lost function.
Sartorius muscle is known as honeymoon muscle as it causes abduction and lateral rotation at hip ...
Kissing can involve a variety of different facial muscles, with the orbicularis oris being the main skeletal muscle involved. Simple kisses use as few as 2 muscles and burn only 2 to 3 calories, whereas passionate kissing can involve as many as 23 to 34 facial muscles and 112 postural muscles.
A ring of muscle encircling your mouth and anchored in your lips, the orbicularis oris (aka the "kissing muscle") allows you to pucker and close your lips. The orbicularis oris also helps you to release air from the mouth forcibly.
Mentalis Elevates and protrudes lower lip and pulls skin of chin up–pouting. Platysma Draws outer part of lower lip inferiorly and posteriorly as in pouting and depresses mandible.
A nonsurgical lip lift, also known as our MM Lip Lift, is a minimally invasive alternative to a surgical lip lift. Filler will add volume to the skin below the nose and above the red lip allowing more red lip to show, turning a small portion of the red lip upward.