Swelling After Wisdom Tooth Extraction: When It Peaks and When It Goes Down

Swelling after wisdom tooth extraction is a normal reaction to surgery. In Korea, the Korea Disease Control and Prevention Agency (KDCA, 질병관리청) explains that it usually peaks 48 hours (2 days) after extraction and then gradually recedes. For the first two days, apply a cold pack to the cheek for 10 to 20 minutes and rest for 5 to 10 minutes, repeating, and sleeping with your pillow slightly raised helps. If swelling grows instead of shrinking after 3 days, or the mouth does not open well, infection is suspected and you should return to the dentist.

Published 2026-11-08 · Updated 2026-11-08 · DentalStatics editorial team

Key facts

Time of worst swelling	48 hours (2 days) after extraction, then gradually decreasing (source: KDCA National Health Information Portal)
Cold pack method	10 to 20 minutes on the cheek, then rest 5 to 10 minutes, repeated for 2 days (source: KDCA National Health Information Portal)
How long swelling lasts	Can persist for about 1 week (source: KDCA National Health Information Portal)
Preventive measure	A steroid can be given before extraction if needed (source: KDCA National Health Information Portal)
Suspected infection	When swelling or pain increases, or difficulty opening the mouth continues, after 3 days (source: KDCA National Health Information Portal)

Why does the face swell after a wisdom tooth is pulled?

The KDCA describes swelling, pain and difficulty opening the mouth after extraction as normal reactions after surgery. The more an extraction involves cutting the gum and removing bone, as with impacted wisdom teeth, the more the surrounding tissue is irritated and the greater the swelling tends to be.

Swelling is usually worst around 48 hours after extraction and then gradually recedes. The KDCA extraction guidance explains that swelling is worst on days 2 to 3 and can last about 1 week, so it is a natural course for it to go down little by little during the first week.

How do you apply a cold pack?

The KDCA advises applying cold packs because swelling is heavy for 1 to 2 days after extraction. Wrap an ice pack in a towel and hold it to the cheek on the extraction side, taking breaks so the skin does not get too cold. The key is to concentrate cold packs on the first two days, when swelling builds, and the dentist can confirm the method for after that at your follow-up visit.

Apply a cold pack to the cheek for 10 to 20 minutes
Rest for 5 to 10 minutes
Repeat this for 2 days after extraction
When sleeping, raise your pillow slightly higher than usual

Which behaviors make swelling worse?

During the first 1 to 2 days after extraction, hot baths, saunas or strenuous exercise suddenly raise circulation and can worsen swelling and bleeding. The KDCA advises resting well during this time.

Smoking and drinking also slow recovery, so avoid them. Repeatedly touching the extraction site with the tongue or chewing hard food can also irritate the wound and make swelling last longer. Take prescribed medicine to the end as directed, even after swelling goes down.

During the first few days as swelling settles, it is better to chew soft food on the side that was not operated on and to let hot soup cool before eating. The KDCA extraction guidance recommends soft, cold food for the first 12 hours.

Is a mouth that does not open well also due to swelling?

It can be. The KDCA explains that trismus, difficulty opening the mouth after extraction, usually appears temporarily along with early facial swelling and resolves on its own. Muscle spasm caused by inflammation is cited as the main cause.

If difficulty opening the mouth continues or gets worse even as swelling goes down, it may be an infection at the surgical site or a jaw joint problem, so it should be checked by the dentist.

Which swelling needs a dentist right away?

The KDCA explains that infection should be suspected if pain or swelling increases, or if difficulty opening the mouth continues, after 3 days. Normal swelling peaks around day 2 and then shrinks, so swelling that grows after that should be viewed differently.

If your face is badly swollen and your mouth barely opens, if it is hard to swallow food, or if you have chills and fever along with pain deep in the throat, go to the dentist immediately regardless of your appointment date. Bruise-like discoloration around the extraction site often fades over several days, but if swelling and fever increase together, get examined.

Common myths and facts

Myth: Swelling should start going down right from the day after extraction.

The KDCA explains that swelling is usually worst 48 hours after extraction. Looking more swollen on day 2 is a common course.

Myth: The longer you apply a cold pack, the better it works.

The KDCA advises applying for 10 to 20 minutes, then resting 5 to 10 minutes, repeated for 2 days. Applying it continuously without breaks can strain the skin.

Myth: Big swelling after extraction is always an infection.

Swelling is a normal reaction after surgery. However, if swelling and pain increase or fever appears after 3 days, infection should be suspected.

Frequently asked questions

How many days does swelling last after wisdom tooth extraction?

It is usually worst around 48 hours after extraction and then recedes. The KDCA extraction guidance explains that swelling can last about 1 week.

Until when should I use a cold pack?

The KDCA advises applying it to the cheek for 10 to 20 minutes and resting 5 to 10 minutes, repeated for 2 days after extraction. After that, follow the dentist's guidance according to the condition of the wound.

Is there medicine to reduce swelling?

The KDCA explains that a steroid can be given before extraction if needed. Whether to use it is decided by the dentist, who looks at the degree of impaction and your health. After extraction, the basics are to take the prescribed painkiller and anti-inflammatory as directed and use cold packs as well.

One side of my face is very swollen and I am worried about going to work.

Swelling is greatest around day 2, so when having an impacted wisdom tooth pulled, it is better to plan for 1 to 2 days off afterward. The KDCA also advises that rest of 1 to 2 days may be needed depending on the extent of surgery.

What should I do if I have a fever along with swelling?

If you have chills or fever with pain deep in the throat, or have trouble swallowing, see the dentist immediately. It can be a sign of spreading infection, so do not wait for your appointment date.

References

Korean version →