← All explanationsPericoronitis

Why do the gums around a wisdom tooth become inflamed?

Pericoronitis is inflammation of the soft tissues around a partly erupted tooth, often a lower wisdom tooth. Plaque and food can collect beneath a gum flap and sustain inflammation.

For dental trainees & teams

01 / 03

A difficult-to-clean area

A soft-tissue flap may cover part of the crown. Cleaning beneath it is difficult, and pressure during chewing can add irritation.

02 / 03

Treat the local problem

The dental team assesses the area and any collection of pus. Cleaning and irrigation are often initial steps; further management depends on the findings.

03 / 03

Recognise spreading signs

Fever, increasing swelling or restricted opening needs prompt help. Breathing difficulty or swelling with swallowing problems requires 112 in Germany. Do not wait for a rinse to work.

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At a glance

Where does it occur?

Around a partly erupted tooth, often a lower wisdom tooth.

How is it treated?

By addressing the local cause and adding further measures as indicated.

When is it urgent?

With fever, spreading swelling, restricted opening or swallowing problems; breathing difficulty is an emergency.

Knowledge in motion

Explained in 36 seconds.

Three steps. Straight to the point.
Explanations are also shown on screen.

Short film (German): Why do the gums around a wisdom tooth become inflamed?

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Silent film in German · English explanations in the three views above

Often confused

Eruption discomfort or infection?

Mild pressure during eruption differs from inflammation with swelling or pus. Persistent or stronger symptoms need examination.

Quick answers

Do I always need antibiotics?

No. Local measures are often the priority. Antibiotics may be added when clinically justified, especially for spreading infection or general illness.

Must the wisdom tooth always be removed?

The term alone does not decide this. Position, space, recurrence and other findings guide the decision.

What can I do myself?

Keep the area gently clean, do not probe beneath the gum with sharp objects, and seek dental help promptly for symptoms.

At the practice

For your consultation

A question to discuss with Dr. med. dent. Niusha Barahmand Pour:

Is the inflammation localised, and what is appropriate for this tooth in the longer term?

Acute symptoms require prompt assessment; subsequent discussion depends on the findings.

Describe painful gums around a wisdom tooth directly, especially with swelling or restricted opening.

Seek advice for wisdom-tooth symptomsFor acute symptoms, call for prompt assessment

Meet Dr. med. dent. Niusha Barahmand Pour

Learning for dental trainees & teamsUnderstand clinical terms and build your knowledge

Build on the simple explanation with clinical terms, key distinctions and a knowledge question.

Pericoronal: Situated around the crown of a tooth.
Operculum: A soft-tissue flap over a partly erupted tooth.
Local measure: Treatment directly at the affected site, such as professional cleaning or irrigation.

Know the difference

Antibiotics do not replace addressing the local cause of an infection originating around a tooth.

Knowledge questionWhat is often the first priority in localised pericoronitis?

This question supports learning. It does not assess personal symptoms.

Using leftover antibiotics without advice
Local assessment and cleaning
Probing harder with a sharp object

Show answer and explanation

Local assessment and cleaning

The findings determine whether medicines or further measures are needed.

Sources for further learning

Sources and context

Editorial research: 23 October 2026. This explanation covers general principles and does not replace a personal examination. Suitable treatment is discussed following individual assessment.