The submental space is a midline fascial space under the chin, below the mylohyoid and between the anterior bellies of the digastric muscles. It lies deep to the investing cervical fascia and contains the submental lymph nodes.
| Location | Under the chin in the midline. |
|---|---|
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Contains lymph nodes draining the chin and front of the mouth.
Infection from the lower incisors or the chin can spread here, causing a firm swelling under the chin. It is one of the spaces involved in Ludwig angina together with the submandibular and sublingual spaces.
A collection of pus under the chin, usually from infected lower front teeth, needing drainage and antibiotics.
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