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The mentalis muscle causes a weak upward-inward movement of the soft tissue complex of the chin. [2] This raises the central portion of the lower lip. [2] In the setting of lip incompetence (the upper and lower lips not touching each other at rest), the contraction of the mentalis muscle can bring temporary but strained oral competence.
Raising upper lip: Upper lip: Elevation: Levator labii superioris: Maxilla: Underneath skin at corners of the mouth; orbicularis oris Lowering lower lip: Lower lip: Depression: Depressor labii inferioris: Mandible: Underneath skin of lower lip Opening mouth and sliding lower jaw left and right: Lower jaw: Depression, lateral: Depressor angulus ...
The depressor labii inferioris muscle helps to depress and everts the lower lip. [1] It is the most important of the muscles of the lower lip for this function. [1] It is an antagonist of the orbicularis oris muscle. [1] It is needed to expose the mandibular (lower) teeth during smiling. [1]
Hemifacial spasm (HFS) is a rare neuromuscular disease characterized by irregular, involuntary muscle contractions on one side (hemi-) of the face (-facial). [1] The facial muscles are controlled by the facial nerve (seventh cranial nerve), which originates at the brainstem and exits the skull below the ear where it separates into five main branches.
Retrain oral, lingual, and facial muscles to facilitate correct resting posture of tongue, lips, and jaw; Establish mature swallowing patterns; Prevent relapses after orthodontic treatment; Improve the relationship between dental arches; reduce open bite and overjet; Maintain overall facial muscle tone needed for chewing, swallowing, and speech
The lip may become scaly and indurated as AC progresses. When palpated, the lip may have a texture similar to rubbing the gloved finger along sandpaper. [7] AC may occur with skin lesions of actinic keratosis or skin cancer elsewhere, particularly on the head and neck [6] since these are the most sun exposed
Potential risks: Some negative side effects like muscle cramps, facial swelling, and bloating have been reported in relation to medication interactions, as well as for some people with existing ...
Buccal space abscesses typically cause a facial swelling over the cheek that may extend from the zygomatic arch above to the inferior border of the mandible below, and from the anterior border the masseter muscle posteriorly to the angle of the mouth anteriorly. [1] Unless another space is also involved, the tissues around the eye are not swollen.