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Wisdom Teeth: Why They Cause Problems and When to Remove Them

Impaction, pericoronitis, and caries near the last molars: when removal is justified and when observation at routine check-ups is sufficient.

Panoramic dental X-ray of both jaws showing the position of the wisdom teeth and why they may need removal
Published: October 31, 2026 · Updated: October 31, 2026 · 3 min read

Wisdom teeth are the last large molars to erupt, later than the others: usually in adolescence or early 20s, but they can cause problems at any age. They are not removed "just in case," but when the tooth truly causes issues. Below is a comparison of observation and removal with pros, cons, and timelines.

What These Teeth Are and Why They Lack Space

Wisdom teeth develop later than the rest and erupt last. If a tooth cannot fully emerge, it remains partially covered by gums or presses against an adjacent tooth—a condition described as impaction.

Consequences vary: pain and swelling, accumulation of food debris, caries on the tooth itself or the adjacent one, gum disease, fluid accumulation around the tooth as a cyst, dental abscess.

Pericoronitis

Pericoronitis is inflammation of the gums around a partially erupted tooth. It is one of the infections a problematic wisdom tooth can cause.

When Removal Is Justified

Removal is considered when the tooth lacks sufficient space for full eruption and already causes the listed problems. The downsides are a procedure with its own recovery and possible complications (described below).

When the Tooth Can Be Left Under Observation

If the tooth causes no symptoms, it is usually left in place and monitored during routine dental check-ups. This applies to both partially erupted and impacted teeth that cause no trouble.

The advantage of observation is no intervention and no recovery period. The disadvantage is that the question about the tooth remains open until the next check-ups. The decision is a team effort: the doctor shows the X-ray and explains the risks, and the patient weighs them together with the dentist.

Diagnosis: Why X-rays Are Taken

The dentist may take X-rays to check the position of the wisdom teeth. Based on this assessment, further steps are discussed.

Removal and Recovery: Timelines and Risks

Removal can be performed by a dentist or a specialist in a hospital or clinic. The procedure is usually done under local anesthesia; sedation or general anesthesia is used if the tooth is complex or the patient is very anxious. Main steps: incision of the gum if it covers the tooth; widening of the socket; the tooth is removed whole or split into 2–3 parts; if needed, resorbable sutures are placed. The procedure often takes a few minutes and no longer than 40 minutes; patients usually go home the same day, and after general anesthesia they may sometimes stay overnight.

Typical recovery timelines:

  • return to usual activities — the next day; after complex removal or general anesthesia, 1–3 days off may be needed;
  • pain and swelling — up to two weeks, but usually begin to subside after 1–2 days;
  • jaw stiffness, bruising on the cheek, discomfort when chewing and swallowing — within the same limits, up to two weeks;
  • sutures dissolve on their own, and the clot over the socket aids healing.

Complications can occur even after simple cases: dry socket when the clot does not form or is dislodged, infection, nerve damage with numbness or tingling of the tongue, lips, and chin—usually resolves but may last weeks or months. The doctor explains these risks in advance. Oral care in the first days requires caution; the dentist provides instructions for the socket.

Seek urgent dental care if bleeding does not stop; if pain and swelling are severe or worsening and painkillers do not help; if pain is accompanied by an unpleasant taste in the mouth, high fever, or general malaise.

Call 103 or 112 for life-threatening emergencies: signs of stroke or heart attack, severe trauma, or if swelling interferes with breathing, swallowing, or speaking.

Routine questions about wisdom teeth are discussed with the dentist at a check-up; this material is for reference and does not replace a doctor's consultation.

Sources

  1. Wisdom tooth removal — NHS
  2. When to call 999 — NHS
  3. When to visit A&E — NHS

Update history

First publication.
Tags X-ray

This content is for reference and does not replace a doctor's consultation. Medical disclaimer