Muscle, Incisor Lower (M. Incisivus Inferior)

The mandibular incisor muscle, or M. Incisiver Inferior (Imf), is located inside the dentoalveolar process of the mandible, supplied by the lingual cranial nerve in the soma of the mandibular nerve and is a horizontal muscle that is located between the lateral incisors and the alveolar process of the mandible. It plays an important role in maintaining the stability of the lower jaw and allowing tooth movement during chewing.

The function of the lower incisor muscle is to maintain the shape of the dentoalvelar segment, which is important in order to maintain the even and correct alignment of the teeth and ensure the stability and strength of the dental system. The important role of the Lower Incisive muscle is to move the lower jaw during speech, smoothing out uneven teeth when pronouncing words using the sounds “v”, “zh”. During sharp movements of the jaw, contracting, it limits the possible displacement of the incisors when grinding teeth in sleep. The lower incisor muscle ensures that the lips close when smacking. The inferior incisor muscle develops a sharp edge on the inner surface of the lower dentition. But with strong contractions of this muscle, a large nasal sound may occur when pronouncing a hard and soft sign: “th” does not come out from the incisal edge, but from the back of the dentition of the lower jaw with the formation of a gap between the canines and the first primary molars, and in this gap with the participation of the muscles of the tongue, a sound similar to a nasal one is produced. The development of the lower muscle is associated with the appearance of bared teeth.