That dull ache at the back of your mouth, the swelling that comes and goes, or the discomfort when chewing — it's easy to brush it off. But these could be early signs your wisdom teeth are causing problems. While not everyone needs them removed, knowing when to act can help you avoid more serious complications.

Understanding Wisdom Teeth

Wisdom teeth, or third molars, are the last adult teeth to emerge, typically appearing between the ages of 17 and 25. Most individuals have four wisdom teeth, though some may have fewer or none at all.

Since wisdom teeth erupt later than other teeth, there is often limited jaw space for them to emerge properly. As a result, they may erupt at an angle, only partially emerge, or remain completely trapped in the bone, resulting in impacted wisdom teeth.

When Is Removal Recommended?

Removal is usually recommended when problems are present or likely to develop.

Common reasons include:

• Pain or discomfort
• Recurrent gum infection (pericoronitis)
• Tooth decay
• Difficulty cleaning the area
• Damage to adjacent teeth such as root resorption
• Cyst formation
• To facilitate orthodontic (braces) treatment

In some cases, early or prophylactic removal is recommended, particularly in younger patients, as surgery is often less complex and recovery tends to be faster.

What Happens If You Leave Them Alone?

Wisdom teeth that are well-positioned, pain-free, and easy to clean may not require removal and can be monitored with regular dental reviews.

However, partially erupted or impacted teeth, even if still buried, can sometimes lead to problems.

These include:

• Infection due to trapped food and bacteria, causing pain, swelling, and difficulty opening the mouth
• Tooth decay, gum disease (periodontitis), or resorption of adjacent teeth
• In rare cases, cysts or tumours forming around an unerupted tooth

Understanding the Risks of Removal

Wisdom tooth removal is a common and generally safe procedure, but as with any surgery, it carries some risks.

Nerve Injury

Lower wisdom teeth lie close to nerves that supply sensation to the lip, chin, gums, teeth, and tongue. These may be affected during surgery, leading to temporary or, rarely, permanent numbness or altered sensation.

Oro-Antral Communication

Upper wisdom teeth lie near the maxillary sinuses and removal may occasionally create a small opening between the mouth and sinus (oro-antral communication), allowing fluids to pass into the nose.

Smaller openings often heal naturally, while larger ones may require further treatment.

Other possible risks include:

• Fractured root tips, which may sometimes be intentionally left behind to reduce the risk of complications
• Damage to adjacent teeth
• Infection of the surgical site
• Dry socket – risk factors include smoking, poor oral hygiene, difficult extractions, oral contraceptive use, and vigorous rinsing or spitting after surgery

What to Expect During Recovery

Wisdom teeth can be removed under local or general anaesthesia, depending on the complexity of the procedure and patient preference.

After surgery, some swelling, pain, mild bleeding, and temporary difficulty opening the mouth are expected. Most patients recover within one to two weeks.

Recovery is supported with pain medications, cold compresses, a soft diet, and good oral hygiene.

Stitches may dissolve on their own or be removed at follow-up.

Don't Ignore the Signs at the Back of Your Mouth

Wisdom teeth issues can start insidiously. Early assessment facilitates treatment and helps prevent more serious problems.

If you're experiencing discomfort or have concerns, a dental examination and X-rays can help determine the most appropriate next step.

For patients considering treatment, it may be helpful to know that surgical wisdom tooth removal is Medisave claimable. National Servicemen (NSFs) may also utilise their NSF medical benefits for eligible wisdom tooth procedures.

You may also refer to the Ministry of Health's Guide to Dental Treatment Costs for general information on fees and benchmarks. Speak to our dentists to find out more about what applies to your specific situation.