Wisdom teeth — the third molars — are the last teeth to develop, typically erupting between ages 17 and 25. For many people they become a problem: there isn't enough room for them, they grow at the wrong angle, or they become impacted — stuck partially or fully beneath the gum and bone. When this happens, removal is usually recommended.
This guide explains who needs wisdom teeth removed, why your dentist may recommend removal before the roots fully develop, and what the procedure and recovery involve.
The most important thing in this article: If a 16-year-old's wisdom teeth are showing signs of a problem, removing them before the roots fully develop is significantly safer, faster, and easier than waiting. The window between ages 15 and 19 is when removal is most straightforward — and that window closes.
Why wisdom teeth cause problems
Human jaws have gotten smaller over evolutionary time, but we still develop the same number of teeth our ancestors did. For most people there simply isn't enough room for four additional molars at the back of the jaw. This leads to several problems:
- Impaction — the wisdom tooth cannot fully erupt and remains stuck under the gum or bone, sometimes growing at an angle toward the adjacent tooth
- Crowding — erupting wisdom teeth push against existing teeth, shifting alignment
- Pericoronitis — infection of the gum flap over a partially erupted wisdom tooth, causing pain, swelling, and difficulty opening the mouth
- Decay — wisdom teeth are in a hard-to-clean location; even fully erupted wisdom teeth develop cavities at a high rate
- Cysts — a fluid-filled sac can develop around an impacted wisdom tooth and destroy surrounding bone
Why timing matters — the case for early removal
This is the most important section in this article for parents and teenagers to understand.
Wisdom tooth roots develop progressively during the teenage years. At age 15 to 17, the crown of the wisdom tooth may be visible on X-ray but the roots are short and incompletely formed. By age 20 to 25, the roots are typically fully developed, longer, and more curved — and in the lower jaw, they may sit very close to or in contact with the inferior alveolar nerve, which runs through the mandible and controls sensation in the lower lip, chin, and teeth.
When roots are short and above the nerve, removal is straightforward. When roots are long and curved around the nerve, removal carries a real risk of temporary or permanent nerve damage causing numbness or altered sensation in the lip, chin, or tongue.
The key window: ages 15–19
If your child's dentist identifies problematic wisdom teeth at age 15 to 17, removing them before the roots grow longer and closer to the nerve is genuinely the safer, less complicated option. Waiting until they cause pain or infection means waiting until the roots have grown — making a more complex surgery necessary. The discomfort of a teenage extraction is real but short-lived. The complications of a delayed extraction are harder to manage.
Not everyone needs removal
Wisdom teeth don't automatically need to be removed just because they exist. Removal is recommended when:
- They are impacted and unlikely to erupt properly
- They are causing pain, infection, or damage to adjacent teeth
- They are fully or partially impacted and impossible to clean effectively
- There is not enough room for them to erupt without shifting existing teeth
- Cyst or pathology is associated with them
Wisdom teeth that have fully erupted, are properly aligned, and can be cleaned effectively may be monitored rather than removed. Your dentist will assess this at regular checkups with X-rays.
What the procedure involves
Simple wisdom tooth extractions are done under local anesthesia by a general dentist. More complex or impacted cases are typically referred to an oral surgeon. Most oral surgeons offer sedation options — nitrous oxide, oral sedation, or IV sedation — making the experience significantly more comfortable.
For an impacted wisdom tooth, the surgeon makes an incision in the gum, removes any bone covering the tooth, and sections the tooth into pieces for easier removal. The entire procedure for all four wisdom teeth typically takes 45 to 90 minutes.
Recovery
The bottom line
Wisdom tooth removal is one of the most commonly performed dental procedures and in the right hands, entirely routine. The single most important factor in how straightforward the procedure is, is timing. Young patients with developing roots, short roots, and roots positioned above the nerve have dramatically simpler, faster procedures with lower risk than patients who wait until their late 20s or beyond. If your dentist is recommending evaluation or removal for a teenager, take it seriously and act sooner rather than later.