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In human anatomy, the facial skeleton of the skull the external surface of the mandible is marked in the median line by a faint ridge, indicating the mandibular symphysis (Latin: symphysis menti) or line of junction where the two lateral halves of the mandible typically fuse in the first year of life (6–9 months after birth). [1]
The mylohyoid line is a bony ridge on the internal surface of the body of the mandible. The mylohyoid line extends posterosuperiorly. The mylohyoid line continues as the mylohyoid groove on the internal surface of the ramus. The mylohyoid muscle originates from the anterior (front) part of the mylohyoid line. [1]
On the mandible it is a ridge on the superior surface. The structures hold the teeth and are encased by gums as part of the oral cavity . [ 12 ] The alveolar process comprises cells and periosteum , also encompassing nerves , blood vessels , and lymphatic vessels . [ 7 ]
The lingula of the mandible is a prominent bony ridge on the medial side of the mandible. [1] It is next to the mandibular foramen. [1] It has a notch from which the mylohyoid groove originates. It gives attachment to the sphenomandibular ligament.
In human anatomy, the mandibular canal is a canal within the mandible that contains the inferior alveolar nerve, inferior alveolar artery, and inferior alveolar vein. It runs obliquely downward and forward in the ramus , and then horizontally forward in the body, where it is placed under the alveoli and communicates with them by small openings.
The mandibular symphysis divides below and encloses a triangular eminence, the mental protuberance, the base of which is depressed in the center but raised on either side to form the mental tubercle. The two mental tubercles along with the medial mental protuberance are collectively called the mental trigone.
The mandibular incisive canal (indicated here by coral green arrows) continuing anteriorly (to the right) from the mandibular canal (purple arrows) after the mental foramen (light green circle). The mental foramen is one of two foramina (openings) located on the anterior surface of the mandible. It is part of the mandibular canal.
A mental spine is a small projection of bone on the posterior aspect of the mandible in the midline. There are usually four mental spines: two superior and two inferior. Collectively they are also known as the genial tubercle, [1] genial apophysis and the Latin name spinae ment