Wisdom Teeth Explained: When Removal May Be Needed

What Are Wisdom Teeth?

Wisdom teeth, also known as third molars, are the last teeth to develop and typically emerge between the ages of 17 and 25. Most adults have four wisdom teeth — one in each corner of the mouth — though some people may have fewer or none at all. Because wisdom teeth are the last to arrive, there is often limited space in the jaw for them to emerge properly.

In some cases, wisdom teeth come through without any issues and function just like other molars. However, for many people, wisdom teeth can become a source of discomfort or dental complications, particularly when there is insufficient room for them to fully emerge or when they grow at an angle.

Signs That Your Wisdom Teeth May Need Attention

Not all wisdom teeth require removal. Your dentist will assess their position and development through clinical examination and X-rays. However, there are several signs that may indicate your wisdom teeth are causing problems:

Pain or tenderness: Discomfort at the back of the mouth, particularly when chewing or opening your jaw wide.
Swelling or redness: Inflammation of the gum tissue around the emerging tooth, sometimes accompanied by difficulty opening the mouth fully.
Recurring infections: Partially emerged wisdom teeth can create a flap of gum tissue that traps food and bacteria, potentially leading to repeated infections known as pericoronitis.
Crowding or pressure: A sensation of pressure against adjacent teeth, which may indicate the wisdom tooth is pushing against its neighbours.
Cysts or damage: In some cases, impacted wisdom teeth may be associated with cyst formation or damage to nearby teeth, though this is less common.

Understanding Impacted Wisdom Teeth

A wisdom tooth is considered impacted when it is unable to fully emerge through the gum line. This can happen when the tooth is angled towards the adjacent tooth, angled away from it, positioned horizontally, or trapped within the jawbone. Impacted wisdom teeth may not always cause immediate symptoms, but they can sometimes lead to complications over time, which is why regular dental monitoring is important.

Your dentist may recommend removal of an impacted wisdom tooth if there is evidence of infection, decay, damage to adjacent teeth, or cyst development. In some cases, removal may be recommended as a preventive measure if the tooth's position suggests future problems are likely.

What to Expect During and After the Procedure

Wisdom tooth removal is a common dental procedure. Depending on the complexity and position of the tooth, it may be performed by your general dentist or you may be referred to an oral surgeon. The procedure is typically carried out under local anaesthesia, though sedation options may be available for patients who are anxious or for more complex extractions.

After the procedure, some swelling, discomfort, and minor bleeding are normal. Your dentist will provide specific aftercare instructions, but general recovery tips include:

Applying a cold pack to the outside of your cheek in intervals to help manage swelling during the first 24 to 48 hours.
Eating soft foods and avoiding hot drinks, alcohol, and hard or crunchy foods for the first few days.
Avoiding vigorous rinsing, spitting, or using a straw for the first 24 hours, as this may dislodge the blood clot forming in the extraction site.
Gently rinsing with warm salt water after the first day to help keep the area clean.
Taking any prescribed or recommended pain relief as directed by your dentist.
Resting and avoiding strenuous physical activity for a day or two to support healing.

Most patients find that recovery takes around one to two weeks, with the initial few days being the most uncomfortable. If you experience prolonged pain, excessive bleeding, or signs of infection such as fever, it is important to contact your dentist promptly.

Talk to Your Dentist About Your Wisdom Teeth