What are wisdom teeth, and why do they cause problems?
Wisdom teeth are the third molars, the last teeth to develop at the very back of the mouth. They commonly appear in the late teens or twenties, though some people never develop them and others have fewer than four. Problems tend to arise because there is often not enough room for them to come in straight. A wisdom tooth may emerge only partly, grow in at an angle, or stay trapped in the bone. These are known as impacted wisdom teeth.
Do all wisdom teeth need to come out?
No. Dental organisations generally do not recommend removing healthy wisdom teeth simply because they are there. A wisdom tooth that has erupted fully, sits in a good position, bites against an opposing tooth and can be brushed and flossed may be kept and monitored. The decision should be based on the specific situation, not a fixed rule.
What are the signs that a wisdom tooth should be removed?
- Repeated gum infection (pericoronitis). A partly erupted tooth leaves a flap of gum where food and bacteria collect, causing swelling, pain, bad taste and sometimes difficulty opening the mouth.
- Decay in the wisdom tooth. Because they are hard to reach, wisdom teeth decay easily and are often difficult to restore.
- Damage to the second molar. A tilted wisdom tooth can trap plaque against the tooth in front of it, leading to decay or bone loss on a tooth you want to keep.
- Cysts or other changes around the tooth. These are less common but are usually an indication for removal.
- Gum disease at the back of the mouth. Deep pockets around wisdom teeth can be hard to treat.
- Planned dental work. Sometimes removal is recommended as part of orthodontic, implant or full-mouth reconstruction planning.
Is there an ideal age for wisdom tooth removal?
There is no single correct age, but it is widely observed that younger adults tend to heal more quickly and with fewer complications, because the roots are not yet fully formed and the bone is more flexible. For this reason, if a wisdom tooth is clearly going to cause problems, dentists often suggest addressing it earlier rather than waiting until it becomes painful.
That said, adults of any age can have wisdom teeth removed safely with proper assessment. For older patients or those with chronic conditions, Seoul E&D Dental Clinic reviews medical history carefully and can monitor vital signs during the procedure.
How is a wisdom tooth assessed before removal?
A standard X-ray shows the tooth, but it does not always show how close the roots are to the nerve that supplies feeling to the lower lip and chin. At E&D Dental we use low-dose 3D CBCT imaging when needed to see the tooth, the nerve canal and, in the upper jaw, the sinus in three dimensions. This helps the dentist plan the safest approach and explain the specific risks for your case.
What happens during removal?
For a straightforward, fully erupted tooth, wisdom tooth extraction can be similar to removing any other tooth. For teeth trapped in bone, impacted wisdom teeth removal may involve a small incision, removal of some bone and sectioning the tooth into pieces so it can be taken out with less force.
The area is numbed using our 3-step painless anesthesia system, which combines topical anesthetic, cold numbing at the injection point and a computer-controlled delivery device. Our team explains each step and checks on you throughout.
What is recovery like?
Swelling and discomfort typically peak in the first two to three days and then improve. Many people need a day or two of rest after a surgical removal. General aftercare advice includes:
- Bite on gauze as instructed to help a blood clot form.
- Use cold compresses on the cheek during the first day.
- Avoid smoking, drinking through a straw and vigorous rinsing for the first few days, as these can disturb the clot.
- Eat soft, lukewarm food and chew on the other side.
- Take any prescribed medication exactly as directed.
Our clinic also has a physical therapy device, used for TMJ care, that can be applied after extraction to help reduce discomfort and inflammation. Ask whether it is suitable for you.
What are the risks?
Most wisdom tooth removals heal without problems. Possible complications include dry socket, where the blood clot is lost and the socket becomes painful; infection; and, for lower teeth close to the nerve, temporary or rarely longer-lasting numbness of the lip or chin. Upper wisdom teeth near the sinus can occasionally create a small opening into it. Your dentist should explain which of these are relevant to you after reviewing the scan.
Can a painful wisdom tooth be treated without removal?
For a mild flare-up of gum infection around a partly erupted tooth, the dentist may clean the area, rinse under the gum flap and advise on home care, sometimes with medication. This can settle the immediate episode. However, if the tooth's position means the flap will keep trapping food, infections tend to recur, and removal is often discussed once the acute swelling has calmed down.
What if I choose to keep my wisdom teeth?
If removal is not needed now, regular dental check-ups with periodic X-rays help catch decay, gum problems or changes early. Pay particular attention to cleaning behind your second molars, and seek advice if you notice swelling or pain at the back of the mouth.
Getting your wisdom teeth checked in Sanbon
E&D Dental is in Sanbon-dong, Gunpo, about a five-minute walk from Sanbon Station on Line 4. We will tell you clearly whether your wisdom teeth need to come out, whether it can wait, and why. To arrange an assessment, please contact the clinic or read about what happens at a first visit.