Dental Nation
Symptom guide

Swelling Under the Jaw

Swelling under the jaw can occur with a dental abscess, along with tooth pain, facial swelling, fever, and chewing difficulty.

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The short answer

Swelling under the jaw can occur with a dental abscess, which may also cause tooth or gum pain, a swollen face or jaws, fever, and trouble chewing.

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Swelling Under the Jaw dental educational illustration

What can swelling under the jaw feel like?

The affected area may be red inside the mouth or on the face or jaw. A bad taste, sensitivity to hot or cold food and drink, swollen neck glands, and difficulty opening the mouth can also occur.

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Symptoms that can accompany jaw swelling
SignWhat may happen
Pain and sensitivityIntense tooth or gum pain and hot or cold sensitivity can occur[1][2]
FunctionOpening the mouth and chewing can become difficult[1][2]

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What can cause swelling under the jaw?

A dental abscess is an infection where pus builds beneath a tooth or gum. It can follow tooth decay, gum disease, an impacted tooth, or injury to the teeth, gums, or mouth.

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Listed contributors to dental abscesses
ContributorHow it is listed
Tooth decay or gum diseaseBoth can lead to a dental abscess[1]
Impacted tooth or injuryA tooth that has not erupted properly or mouth injury can be involved[1]

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What relief is safe tonight?

Brush with fluoride toothpaste at least twice a day, spit after brushing without rinsing, and clean between the teeth daily with floss or interdental brushes.

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How is urgent swelling assessed?

Urgent dental assessment considers the extent of pain and swelling, loss of function, symptom duration, and the response to appropriate medication. Spreading dental infection needs timely intervention.

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How is swelling from an abscess treated?

An abscess is treated by draining the pus. A tooth cause may need root canal treatment or removal under local anaesthetic; antibiotics can be used alongside other treatment, but they do not replace the needed clinical intervention.

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How can I help prevent another dental abscess?

Daily fluoride toothpaste, cleaning between the teeth with floss or interdental brushes, and replacing a toothbrush every two to three months are listed preventive steps.

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When does swelling under the jaw need urgent attention?

A suspected dental abscess needs urgent dental assessment. Pain, swelling, loss of function, and symptoms that are spreading or not responding to appropriate medication are considered in urgent care.

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Frequently asked questions

Can a dental abscess make the area under my jaw swell?

A dental abscess can cause a swollen face or jaws, swollen neck glands, tooth or gum pain, fever, and difficulty opening the mouth or chewing.

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