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The submandibular space is a fascial space of the head and neck (sometimes also termed fascial spaces or tissue spaces). It is a potential space, and is paired on either side, located on the superficial surface of the mylohyoid muscle between the anterior and posterior bellies of the digastric muscle. [1]
The submaxillary space is a historical term for the combination of the submandibular, submental and sublingual spaces, which in modern practice are referred to separately or collectively termed the perimandibular spaces. [7]
The posterior part of this triangle contains the external carotid artery, ascending deeply in the substance of the parotid gland. This vessel lies here in front of, and superficial to, the external carotid, being crossed by the facial nerve, and gives off in its course the posterior auricular, superficial temporal, and internal maxillary branches: more deeply are the internal carotid, the ...
The sublingual space communicates posteriorly around the posterior free border of the mylohyoid muscle with the submandibular space. [2] Infections of the sublingual space may also erode through the mylohyoid, or spread via the lymphatics to the submandibular and submental spaces.
The mylohyoid muscle may also be split into an anterior portion and a posterior portion, with the sublingual gland occupying the space between these portions. [ 7 ] An area of herniation of the sublingual gland , blood vessels, or fat, may be present, with studies reporting this in 10-50% of people.
The submasseteric space is sometimes involved by the spread of odontogenic infections, such as a pericoronal abscess associated with an impacted mandibular third molar (lower wisdom tooth) when the apices of the tooth lie very close to or within the space.
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The submental space is a fascial space of the head and neck (sometimes also termed fascial spaces or tissue spaces). It is a potential space located between the mylohyoid muscle superiorly , the platysma muscle inferiorly , [ 1 ] under the chin in the midline.