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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 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.
If the infection originates below the mylohyoid's point of attachment, then the infection will spread to the submandibular space. The submental space is located behind the mentalis muscles, and infections spread to this space when the oral infection begins at the roots of the mandibular incisors because they are so long. [1]
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.
Sometimes the buccal space is reported to be the most commonly involved fascial space by dental abscesses, [2] although other sources report it is the submandibular space. [1] Infections originating in either maxillary or mandibular teeth can spread into the buccal space, usually maxillary molars (most commonly) and premolars or mandibular ...
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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 ...