Wisdom teeth — third molars — typically emerge between the ages of 17 and 25, though they can appear later or not at all. Most adults have four, one in each corner of the mouth. The question of whether to remove them is one of the most common we field at Tooronga Family Dentistry, and the answer is never a blanket yes or no — it depends on what your specific wisdom teeth are doing, and what they are likely to do.

Why wisdom teeth cause problems

The human jaw has become progressively smaller over evolutionary time while the number of teeth has remained the same. The result, for most modern adults, is insufficient space for wisdom teeth to emerge fully and correctly. When a tooth cannot fully erupt into its proper position it is described as impacted.

Impaction takes several forms — the tooth may be angled toward the adjacent molar, lying horizontally, tilted outward or inward, or trapped entirely within the jawbone. Each pattern carries different risks and different clinical implications.

When wisdom teeth should be removed

Recurrent pericoronitis The most common reason for wisdom tooth removal in younger adults. Pericoronitis is infection of the gum flap — the operculum — that partially covers an incompletely erupted wisdom tooth. Food and bacteria accumulate beneath the flap, causing pain, swelling, difficulty opening the mouth, and sometimes systemic infection with fever. A single episode may resolve with irrigation and antibiotics. Recurrent episodes are a clear indication for removal — the underlying anatomy will not change and the infections will continue.

Damage to the adjacent molar A wisdom tooth angled toward the second molar creates a trap for food and bacteria at a site impossible to clean effectively. The result is decay on the front surface of the second molar — often a more functionally important tooth than the wisdom tooth itself — and sometimes resorption of its root. When a wisdom tooth is actively damaging its neighbour, removal is unambiguous.

Decay in the wisdom tooth itself Partially erupted wisdom teeth are notoriously difficult to clean. Their position at the back of the mouth, combined with partial coverage by gum tissue, makes effective brushing almost impossible. Decay in a wisdom tooth that cannot be adequately restored due to access or position is a sound indication for removal.

Cyst formation Impacted wisdom teeth can develop dentigerous cysts — fluid-filled sacs that form around the crown of the unerupted tooth. Left undetected and untreated, these cysts expand slowly, destroying surrounding bone and occasionally adjacent tooth roots. They are typically identified on routine panoramic X-ray before causing symptoms. The presence of a cyst associated with a wisdom tooth is a definitive indication for removal.

Significant crowding contribution The relationship between wisdom teeth and front tooth crowding is more nuanced than popularly believed — the evidence that wisdom teeth directly cause incisor crowding is not conclusive. However, in patients with borderline space and orthodontic concerns, removal is often recommended to reduce pressure on the dental arch, particularly following orthodontic treatment.

Pain or pathology with no conservative solution Wisdom teeth causing persistent pain, recurrent infection, or associated pathology that cannot be managed conservatively should be removed. Continued management of a symptomatic tooth that has no functional value and a predictable pattern of causing problems is rarely in the patient’s long-term interest.

When wisdom teeth do not need to be removed

Not every impacted or partially erupted wisdom tooth requires removal. A wisdom tooth that is fully impacted — completely enclosed within bone, showing no associated pathology, no cyst formation, no damage to adjacent teeth, and no symptoms — can be monitored rather than removed in many cases, particularly in older patients where the risks of surgical removal may outweigh the benefits of prophylactic extraction.

A wisdom tooth that has fully erupted into a functional position, can be cleaned effectively, is free of decay, and has an opposing tooth to bite against is worth keeping. These are relatively uncommon but they exist, and removing a healthy functional tooth without clinical justification is not a decision we make lightly.

The key is monitoring. Wisdom teeth that are retained require periodic radiographic review — typically every two years — to confirm that no pathology is developing silently.

At what age should wisdom teeth be assessed and removed?

Earlier is generally better when removal is indicated. In younger patients — late teens to mid-twenties — the roots of wisdom teeth are not yet fully formed, the bone is less dense, and healing is faster and more predictable. Surgical difficulty, post-operative discomfort, and the risk of complications such as nerve involvement all increase with age as roots mature and bone becomes denser.

This is why we recommend a wisdom tooth assessment — including a panoramic X-ray to view all four teeth and their relationship to surrounding structures — for patients in their late teens, regardless of whether symptoms are present. Knowing what your wisdom teeth are doing allows informed decisions to be made proactively rather than reactively during an acute episode of pain.

What does wisdom tooth removal involve?

The complexity of removal varies considerably depending on the degree of impaction, root anatomy, and proximity to the inferior alveolar nerve — the nerve running through the lower jaw that provides sensation to the lower lip, chin and teeth.

Simple erupted wisdom teeth can be removed under local anaesthesia in the dental chair in a straightforward extraction, similar in experience to removing any other tooth.

Partially erupted or moderately impacted wisdom teeth typically require a surgical extraction — a small incision in the gum, removal of a small amount of bone overlying the tooth, and sectioning of the tooth into pieces for easier removal. This is performed under local anaesthesia at Tooronga Family Dentistry and is the most common type of wisdom tooth surgery we perform for patients across Glen Iris, Malvern and Hawthorn.

Deeply impacted teeth with complex root anatomy or close proximity to the inferior alveolar nerve may be referred to an oral and maxillofacial surgeon for removal under sedation or general anaesthesia. We discuss this openly when the clinical situation warrants specialist involvement — patient safety and surgical predictability always take precedence over in-house convenience.

What to expect after wisdom tooth removal

Swelling, mild to moderate discomfort, and limited jaw opening for two to five days are normal after surgical extraction. Most patients manage well with ibuprofen and paracetamol at recommended doses. Ice packs applied in the first 24 hours reduce swelling. A soft diet for the first few days is advisable.

The most significant post-operative complication is dry socket — where the blood clot in the extraction site breaks down, exposing bone and causing significant pain typically beginning three to five days after surgery. Risk factors include smoking, oral contraceptive use, vigorous rinsing in the first 24 hours, and drinking through straws. We provide detailed post-operative instructions to minimise this risk, and we are available to manage it promptly if it occurs.

Having your wisdom teeth assessed at Tooronga Family Dentistry

We take a conservative, evidence-based approach to wisdom teeth — removing those that are causing or will predictably cause problems, and monitoring those that are not. We do not recommend removal as a default. We take a panoramic X-ray, assess each tooth individually, explain our findings clearly, and discuss the options with you so you can make an informed decision.

We see patients for wisdom tooth assessment and removal from Glen Iris, Malvern, Hawthorn, Hawthorn East and Ashburton, and refer to trusted oral surgery colleagues when the clinical situation is best managed in a specialist setting.

Not sure what to do about your wisdom teeth? Book an assessment at Tooronga Family Dentistry — we’ll give you a clear picture of what’s happening and an honest recommendation.