Here, the most common bony disturbances have been noted: Lateral surface of ramus and angle of mandibleĬlinically, there are many types of pathological conditions within the mandible. Medial surface of ramus (pterygoid tuberosity) and angle of mandible Mental tubercle and oblique line of mandibleĪpex and medial surface of coronoid process of mandible The mylohyoid sulcus: A small sulcus which contains the mylohyoid artery and nerve.īesides the sphenomandibular and stylomandibular ligaments, and the pterygomandibular raphe, there are numerous muscles that attach to the mandible.The mandibular foramen: The starting point of the mandibular canal which is traversed by the inferior alveolar nerve and its branches.The pterygoid tuberosity: A rough area for the insertion of the medial pterygoid muscle.The medial surface of the rami harbours following landmarks: On the posterolateral aspect of the ramus there is a single landmark called the masseteric tuberosity, a rough surface that serves for the insertion of the masseter muscle. The condylar process has an articular surface (the condyle), via which the mandible articulates with the articular tubercle of the temporal bone to form the temporomandibular joint. The coronoid process features the temporal crest, which serves as an attachment point for the temporalis muscle. The incisure between them is called the mandibular notch and it is crossed by the masseteric nerve and vessels. The superior part of the ramus consists of two processes: the coronoid process (anterior process) and the condylar process (posterior process). Usually, the angulation is larger in men. The angle can range from 110° to 130° and can vary depending on the age, sex and etnicity. The point at which it unites with the body is called the angle of mandible (i.e. The ramus is the vertical part of the mandible. The rami articulate with the temporal bone on each side to create the temporomandibular joint which provides mobility to the mandible and allows mastication. The rami are the two vertical processes that are connected to the body at the mandibular angle. The body is the horizontal portion of the mandible that creates the jawline and holds the teeth in place. The mandible is composed of two main parts: the body and the ramus. Mental protuberance, mental tubercle, mental foramen, oblique line of mandible, sublingual fossa, mylohyoid line, submandibular fossa, mental spines, digastric fossa, alveolar part, interalveolar septaĬoronoid process, mandibular notch, condylar process, head of mandible, neck of mandible, pterygoid fovea, pterygoid tuberosity, masseteric tuberosity, angle of mandible, mandibular foramen, lingula, mylohyoid groove This article will discuss the anatomy of the mandible.Ī horseshoe-shaped mobile bone of the viscerocranium that forms the lower jaw and houses the mandibular teeth These parts feature various anatomical landmarks participate in important functions of the mandible, for example housing the teeth and providing the passage for neurovascular structures. The mandible consists of two main parts: a body and two rami. These movements allow complex actions like chewing and speaking. This joint allows the mandible to be attached to the skull while at the same time being capable of producing various translatory and rotatory movements. Unlike other bones of the skull, the mandible doesn’t articulate with the surrounding bones via sutures, but rather via a synovial joint called the temporomandibular joint. Besides the bones of the middle ear, the mandible is the only mobile bone in the skull. The mandible is the largest bone of the fascial skeleton ( viscerocranium).
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