Wisdom teeth: when to remove them and when not

There is a common belief that every wisdom tooth ends up extracted sooner or later. Let me be clear from the start: that is not true. I'm Alexis Rodríguez, an oral surgeon at AS Odontología Digital, and in practice I see both situations almost daily. Some third molars are better removed early, and others stay in the mouth for years without causing a single problem. The difference depends on how that particular tooth sits, how much room it has and whether it can be kept clean. Deciding well starts with understanding what a wisdom tooth actually is.

Wisdom teeth are the third molars, the last teeth to appear, almost always between the ages of 17 and 25. They close off each half of the arch, two on top and two on the bottom. The classic problem shows up when the jaw no longer has room to receive them: the tooth erupts only partway, tilts against the second molar, or stays trapped under the gum and bone, which we call impaction. When it comes in halfway, it leaves a flap of gum over the crown, an area where food and bacteria collect and where a toothbrush barely reaches. That is where most of the discomfort that brings patients to the clinic begins.

It helps to separate two distinct scenarios. The first is the problem tooth: the one causing repeated infections of the gum flap, known as pericoronitis, the one with decay that can no longer be restored, the one damaging or resorbing the root of the neighboring second molar, the one linked to a cyst on the scan, or the one that aches again and again while trapping food with no real fix. The second scenario is the quiet tooth: it erupted fully, landed in a good position, bites against its opposing tooth, the surrounding gum is healthy and the patient can clean it without effort. That tooth does not call for surgery.

When the case for removal is clear, at AS we begin with a clinical exam and an image. In most cases I order a cone-beam CT, because it lets me see in three dimensions the exact position of the root and its relationship to the inferior alveolar nerve, which runs inside the jaw. That relationship shapes the entire surgery. With that scan we plan the approach digitally, and when proximity to the nerve calls for it, we work with guided surgery. The idea is to go in with a defined plan before touching tissue, rather than improvising in the moment. That makes the procedure more predictable and, for the patient, calmer.

On recovery I prefer to speak plainly. After a third molar extraction it is normal to have some swelling and discomfort in the first few days, which tend to be the most intense before easing off. I generally advise relative rest, a cold pack for the first hours, a soft and cool diet, and care with the area when cleaning. Pain management is decided case by case and always prescribed by the treating team, so I avoid recommending any medication over the internet. Most patients return to their routine within a few days. One instruction I always repeat: no smoking while the socket heals, because it slows the closure.

It is worth knowing the signs that your wisdom tooth is causing trouble. Pain or pressure toward the very back of the arch. Gum that is swollen, red or tender right around the tooth. Persistent bad breath or a bad taste that brushing does not clear, a sign that something is building up under the gum. And difficulty opening your mouth fully or chewing on that side. Any of these warrants a check with an exam and an x-ray, even without severe pain. Often the problem has been quietly settling in for a while before it gives any warning.

There is a point where waiting is no longer an option. If you develop significant swelling of the face or neck, a fever, or trouble swallowing or opening your mouth, that is an infection that needs same-day attention. I mention it so you can tell the difference between a complaint that can wait for an appointment and a genuine emergency. Outside that picture, the decision about your wisdom tooth is made calmly, case by case, with an exam and an x-ray in front of us. Remove it when there is a clear reason, and keep and monitor it when the tooth is healthy. That is the honest conversation I want to have with you in the chair.