← All explanationsGum swelling

What can cause swollen gums?

Swollen gums are an observation, not yet a diagnosis: the tissue may look enlarged, tender or red. Inflammation is a common reason, but appearance alone cannot identify the cause. The location, course and accompanying symptoms help guide an examination.

For training & practice ↓

Fictional educational image showing a locally red and swollen gum papilla between natural upper incisors. — Illustrative swelling · its cause cannot be determined from this image

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Describe the area

Is one small spot affected or a larger part of the gums? Is there bleeding, tooth pain or an unpleasant taste? These details are useful without establishing a diagnosis on their own.

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Check both tooth and gum

Plaque can irritate the gums. A localised swelling may also be linked to an infection deeper down. Depending on the findings, the tooth, gums and neighbouring tissues need assessment.

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Recognise warning signs

Increasing swelling, severe pain, pus or fever needs prompt dental assessment. Breathing or swallowing difficulty and rapidly spreading swelling require immediate medical help.

Watch the short explanation ↓

At a glance

Who should take notice?

Anyone with new, recurring or persistent gum swelling.

How does assessment begin?

With questions about the course and an examination of the tooth and gums.

When should I not wait?

Promptly for clear worsening, severe pain or fever; immediately for breathing or swallowing difficulty.

Knowledge in motion

Explained in 36 seconds.

Three steps. No audio.
Each scene can also be selected manually.

Silent educational film with German on-screen text and simplified teaching images. Not a patient case or a promised treatment outcome. The full English explanation is available below.

Read the film text in English

Describe the area
Is one small spot affected or a larger part of the gums? Is there bleeding, tooth pain or an unpleasant taste? These details are useful without establishing a diagnosis on their own.
Check both tooth and gum
Plaque can irritate the gums. A localised swelling may also be linked to an infection deeper down. Depending on the findings, the tooth, gums and neighbouring tissues need assessment.
Recognise warning signs
Increasing swelling, severe pain, pus or fever needs prompt dental assessment. Breathing or swallowing difficulty and rapidly spreading swelling require immediate medical help.

Often confused

Swelling or abscess?

Swelling is a visible or palpable finding. An abscess is a localised collection of pus. Not every swelling is an abscess, and a photograph cannot reliably identify its cause.

Quick answers

Does swelling always mean periodontitis?

No. Periodontitis affects the tissues supporting teeth. Swollen gums alone do not show whether those tissues have been damaged; appropriate findings are needed.

Can I pierce the swelling myself?

No. Squeezing or piercing can cause injury and delay care. Even if fluid drains or pressure eases, a cause requiring treatment may remain.

Is mouthwash enough?

A rinse does not establish the cause or replace a necessary examination or treatment. Continue gentle cleaning while arranging care; suitable tools can be discussed at the practice.

At the practice

For a personal discussion

An editorially suggested question for a discussion with Dr med dent Niusha Barahmand Pour:

Is the source more likely to be the gum or the tooth, and what examination would clarify it?

Swelling needs professional assessment. For acute symptoms, call directly instead of waiting for a routine online appointment.

Call the practice · 0221 669 401 80Telephone contact

Meet Dr. Niusha Barahmand Pour ↗

Learning layer for training & practiceUnderstand terminology and deepen knowledge

Gingiva: The gum tissue around the teeth.
Signs of inflammation: Examples include redness, swelling, pain or bleeding; these alone do not identify the cause.
Abscess: A localised collection of pus requiring timely professional treatment.

Make the distinction

Swelling is a visible or palpable finding. An abscess is a localised collection of pus. Not every swelling is an abscess, and a photograph cannot reliably identify its cause.

Knowledge questionWhat does swelling alone establish?

For learning, not for assessing personal symptoms. Your answer is not stored or sent.

That periodontitis is always present.
That mouthwash will be enough.
That a finding needs its cause assessed.

View answer

That a finding needs its cause assessed.

A sign is not the same as its cause. Its course and other findings guide interpretation.

Sources and context

Editorial research: 2026-11-02. General information, not an individual diagnosis or treatment recommendation. Teaching illustrations are simplified and do not depict a patient case.