Wisdom Tooth Pain: When to Extract and When to Wait | The Maxillofacial Clinic – Dr. Abhisek Chatterjee | The Maxillofacial Clinic

What Are Wisdom Teeth?

Wisdom teeth — the third molars — are the last teeth to erupt, typically between the ages of 17 and 25. Most adults have four wisdom teeth, one in each corner of the mouth. They are evolutionary remnants: our ancestors needed large jaws and many teeth to process a coarse diet. Modern diets have led to smaller jaws, with insufficient space for wisdom teeth to emerge normally.

When there is not enough room, a wisdom tooth becomes impacted — it cannot erupt into the mouth in the correct position. Impacted wisdom teeth may be partially erupted (partially out of the gum) or fully impacted (completely enclosed in bone).

When Does a Wisdom Tooth Need to Be Removed?

Not all impacted wisdom teeth require extraction. An impacted wisdom tooth that is fully enclosed in bone, symptom-free, and not associated with any pathology can be monitored with periodic X-rays. Removal is recommended in the following circumstances:

Recurrent Pericoronitis

Repeated infection and swelling of the gum flap overlying a partially erupted wisdom tooth. Each episode causes pain, swelling, and difficulty opening the mouth. Once pericoronitis becomes recurrent, extraction is the definitive solution.

Damage to Adjacent Tooth

A horizontally impacted wisdom tooth can push against the roots of the second molar, causing root resorption (damage) and decay at the contact point. Once this occurs, prompt extraction is necessary to preserve the second molar.

Cyst or Tumour Formation

Impacted wisdom teeth can develop a dentigerous cyst — a fluid-filled sac around the crown of the tooth. If left untreated, this cyst can expand, destroy adjacent bone, and in rare cases undergo pathological transformation. Early extraction prevents this complication.

Tooth Decay (Caries)

Partially erupted wisdom teeth are very difficult to clean and highly susceptible to tooth decay. If the wisdom tooth or the adjacent second molar develops significant decay because of the wisdom tooth's position, extraction is preferred over repeated attempts at restoration.

Orthodontic Reasons

When orthodontic treatment is planned, wisdom teeth may need removal if they are likely to cause crowding or prevent the planned tooth movements. This is decided in consultation with the treating orthodontist.

Persistent Pain

Wisdom teeth that cause persistent pain — from pressure on adjacent teeth, nerve proximity, or pericoronitis — are a clear indication for extraction, particularly if conservative management has not provided relief.

The Surgical Extraction Procedure

Most impacted wisdom tooth removals are done under local anaesthesia as an outpatient (day-care) procedure. For patients who are anxious or require removal of multiple teeth, IV sedation or general anaesthesia may be arranged.

The procedure involves:

A small incision in the gum overlying the tooth (if needed)
Removal of any bone covering the tooth crown
Sectioning the tooth if needed (cutting it into sections for easier removal)
Extraction of the tooth
Irrigation and closure of the wound with absorbable sutures

The procedure typically takes 20–45 minutes depending on the position and anatomy of the tooth. Post-operative instructions including medications, diet restrictions, and wound care will be provided.

When Not to Remove a Wisdom Tooth

An asymptomatic, fully bony-impacted wisdom tooth with no associated pathology (no cyst, no decay, no damage to adjacent tooth) in a patient over 35 years of age is often best left alone. The roots are typically fully formed and closer to the inferior alveolar nerve in older patients, increasing the risk of nerve injury at extraction. In such cases, regular monitoring with periodic X-rays is the preferred approach.