Wisdom Teeth: When They Need to Come Out, and When They Don’t
For decades, having all four wisdom teeth removed in your late teens was close to a rite of passage. The guidance has shifted, and most people haven’t heard about it.
Not everyone needs their wisdom teeth out, and the decision is made from an x-ray rather than a rule of thumb. If a tooth has a clear path to erupt into a useful position, it can be monitored. If the radiograph shows it cannot erupt correctly, removal is usually recommended, and having it done before about age 25 means faster and more predictable healing. Removal is also indicated for recurrent pericoronitis, decay that cannot be restored, gum disease behind the second molar, or cysts. Dry socket affects about 6.7% of lower wisdom tooth extractions.
The American Association of Oral and Maxillofacial Surgeons sets the standard we work to here in North America, and its position is more measured than the old default: “in the absence of disease or significant risk of disease, active clinical and radiographic surveillance is indicated.” Two phrases in that sentence carry the weight. Significant risk of disease means an anticipated problem counts as an indication, not just a present one. And radiographic means the call is made from an image, not from age or habit.
So the practical question at a checkup is narrow: does this tooth have a realistic path to erupt into a useful position? We take an x-ray and look at angulation, the space available behind the second molar, root formation, and proximity to the nerve. If the answer is yes, we monitor. If the image shows the tooth is angled into the tooth in front, has no room, or is going to stay buried, waiting for it to cause a problem is not much of a plan — and AAOMS also notes that surgery gets harder and riskier with age.
That last point is why timing matters. Where removal is indicated, before about age 25 is the ideal window. Roots are not fully formed, bone is more forgiving, and healing in a young healthy patient is generally uneventful. The same extraction at 45 is a bigger undertaking with a slower recovery.
When do wisdom teeth need to be removed?
- Recurrent pericoronitis: infection of the gum flap over a partially erupted tooth. A single first episode isn’t an indication on its own, but a second or subsequent episode is.
- Decay in the wisdom tooth or the tooth in front of it that can’t be restored. A partially erupted third molar is often impossible to clean properly, and the damage frequently shows up on the second molar rather than the wisdom tooth itself.
- Gum disease localized behind the second molar.
- Cysts or other pathology associated with the tooth.
- Damage to the adjacent tooth from pressure or position.
- Persistent pain or recurring swelling.
Notice what isn’t on that list: “it’s impacted.” An impacted wisdom tooth that isn’t causing problems and isn’t likely to isn’t automatically an extraction. Nor is crowding of the front teeth. The idea that wisdom teeth push the rest of your teeth crooked is much weaker than it’s usually presented.
What does the evidence say about removing healthy wisdom teeth?
Thin, and you should know that when weighing advice.
The 2020 Cochrane review on removing versus retaining asymptomatic impacted wisdom teeth found only two studies worldwide, covering 493 participants. Its conclusion: “insufficient evidence is available to determine whether asymptomatic disease-free impacted wisdom teeth should be removed or retained.”
The one signal favouring removal was reduced periodontitis behind the second molar, and that finding was rated very low certainty. Reduction in decay wasn’t statistically significant. Quality of life, arguably the outcome that matters most, wasn’t measured by either study.
What that means in practice: the research doesn’t settle the question for you, so the decision comes back to what your x-ray actually shows and how old you are. That’s a judgement call made tooth by tooth, and it should be explained to you in those terms rather than presented as a foregone conclusion in either direction.
What are the risks of wisdom tooth removal?
These are real and they belong in the decision, especially for a tooth that isn’t currently causing trouble.
| Risk | How often | What it affects |
|---|---|---|
| Dry socket | ~6.7% for lower wisdom teeth, across 28 studies and nearly 42,000 extractions | Painful exposed bone, typically days 2–4 |
| Inferior alveolar nerve injury — temporary | 0.35%–8.4%, depending on proximity and difficulty | Sensation in the lower lip and chin |
| Inferior alveolar nerve injury — permanent | ~0.3% | Sensation in the lower lip and chin |
| Lingual nerve injury — permanent | 0.07%–0.28% | Sensation in the tongue |
Where a root sits very close to the nerve, a procedure called coronectomy, which removes the crown and deliberately leaves the root, substantially reduces nerve injury risk and is worth asking about.
None of this is an argument against removing a wisdom tooth that needs to come out. It’s an argument for having an actual indication first.
What happens during wisdom tooth removal?
- Assessment and imaging to determine position, root shape, and proximity to the nerve or sinus.
- Anesthesia. Local freezing for straightforward cases. Most wisdom tooth extractions are more comfortable under sedation, and we provide oral sedation — medication taken before the appointment that leaves you relaxed and drowsy but awake. We do not offer IV sedation or general anesthesia; where those are the right choice, an oral surgeon provides them.
- Extraction. A fully erupted tooth may come out simply. An impacted one requires an incision, sometimes removal of a small amount of bone, and the tooth may be sectioned to remove it in pieces.
- Closure. Stitches if needed, and gauze to control bleeding.
Recovery is a few days for a simple extraction and roughly one to two weeks for surgical removal of an impacted tooth.
Which after-care advice actually works?
Some standard post-operative advice is well founded. Some is folklore that’s been repeated so long it reads as fact. Worth knowing which is which, so you put your effort where it counts.
| After-care advice | How good is the evidence? |
|---|---|
| Don’t smoke | Strong. Dry socket in 13.2% of smokers against 3.8% of non-smokers, rising to ~40% among people who smoke on the day of surgery |
| Chlorhexidine rinse or gel | Moderate certainty that it reduces dry socket risk |
| Oral contraceptives raise risk | Moderate. Worth mentioning to your surgeon rather than acting on |
| Avoid straws | Not supported. The only trial to test it found 15% versus 15% |
Well supported: don’t smoke. This is the big one and it isn’t close. Dry socket rates run around 13.2% in smokers versus 3.8% in non-smokers, more than triple the odds, rising to roughly 40% among people who smoke on the day of surgery. If you do one thing to protect the site, this is it.
Well supported: chlorhexidine. Chlorhexidine rinse or gel meaningfully reduces dry socket risk, with moderate-certainty evidence behind it. Ask whether it’s appropriate for you.
Moderately supported: oral contraceptives are associated with somewhat higher risk. Worth mentioning to your surgeon rather than acting on.
Not supported: the straw rule. The universal warning that drinking through a straw will suck out the clot doesn’t hold up. The accepted mechanism of dry socket is that the clot breaks down biochemically from within, not that it gets physically pulled out. A 2010 review found no evidence that negative pressure from a straw contributes. Cochrane states there’s no clear evidence for it. And the one trial that actually tested it, in which patients were randomized to use a straw for two days after surgery, found 15% versus 15%, identical rates.
That study was small, so “no difference detected” is more accurate than “proven harmless.” And guidance bodies genuinely disagree: AAOMS still advises against straws, while the ADA’s dry socket page doesn’t mention them at all and lists only smoking.
So follow your surgeon’s specific instructions. They know your case, and the advice costs you little. Just don’t let a straw become the thing you worry about while you’re still smoking.
What the first two weeks should look like:
- First 24 hours: bite firmly on gauze for 30–45 minutes, rest with your head elevated, and use a cold compress for swelling. No smoking, no vigorous rinsing, and no spitting. If bleeding hasn’t settled after a couple of gauze changes, bite on a damp black tea bag for 20 minutes; if it’s still heavy after a few hours, call your surgeon.
- Days 2–3: soft foods, gentle warm salt-water rinses.
- Days 4–14: gradually return to normal food as comfort allows; swelling and soreness steadily fade.
Call your provider if pain gets worse rather than better after the first two or three days, especially with a bad taste or odour. That pattern is the classic presentation of dry socket, and it’s treatable. You don’t have to wait it out.
What we do at Mellow Family Dental Care
We assess wisdom teeth as part of routine care, tracking position and eruption with digital radiographs and watching for the specific problems that make removal appropriate. Dr. Makhani and our dental team are qualified to perform wisdom tooth extractions, and most cases are done here rather than referred out.
We provide oral sedation for these appointments. We do not offer IV sedation. Two situations therefore go to an oral surgeon, and we’ll tell you plainly which one applies at the assessment:
- Complicated cases — deeply impacted teeth, roots close to the inferior alveolar nerve, or anything where the surgical risk is better managed by a specialist.
- Patients who want IV sedation or general anesthesia, which we don’t provide.
Either way you leave the assessment knowing which category you’re in, what it involves, and what it will cost. If we refer, you go with your records and imaging, and we look after your care before and afterward.
If you’re unsure whether your wisdom teeth need attention, that’s a normal thing to raise at a checkup, and the answer is often that they don’t, but we’ll keep an eye on them.
Common questions
Does everyone need their wisdom teeth removed? No. Wisdom teeth that erupt cleanly, can be cleaned, and aren’t causing problems can stay and be monitored. The decision is made from an x-ray: if the tooth has a realistic path to erupt into a useful position it can be watched, and if the radiograph shows it cannot, removal is usually recommended rather than waiting for it to cause damage.
Does it hurt? Not during the procedure; the area is fully numb. Soreness afterward is expected and manageable, more so after surgical removal of an impacted tooth.
How long is recovery? A few days for a simple extraction; roughly one to two weeks for a surgical one.
Is there a best age to have them out? Yes. Where removal is indicated, before about age 25 is the ideal window. Roots are not fully formed, bone is more forgiving, and healing in a young healthy patient is generally uneventful. The same extraction at 45 is a bigger undertaking with a slower recovery. That’s a reason to act promptly when there is an indication, not a reason to create one.
What is dry socket? The blood clot in the socket breaking down before healing is established, exposing bone. It’s painful, typically appears two to four days afterward, and is treatable. It affects around 6.7% of lower wisdom tooth extractions.
Do wisdom teeth cause crowded front teeth? The evidence for this is much weaker than the belief. Lower front teeth tend to crowd with age in people who never had wisdom teeth at all. It’s not considered a sound reason on its own to remove them.
Will insurance cover removal? Most plans cover medically necessary extractions, with simple extractions usually falling under basic services and surgical removal of impacted teeth sometimes classified as major. The CDCP covers oral surgery including extractions; preauthorization requirements vary by procedure, and root canals on third molars specifically do require it.
Does Mellow Family Dental Care remove wisdom teeth? Yes. Dr. Makhani and our dental team are qualified to perform wisdom tooth extractions, and most cases are done in-house rather than referred. Complicated cases — deeply impacted teeth or roots close to the inferior alveolar nerve — are referred to an oral surgeon.
What kind of sedation do you offer for wisdom tooth removal? We provide local anesthetic and oral sedation, which is medication taken before the appointment that leaves you relaxed and drowsy but awake. We do not offer IV sedation or general anesthesia. Patients who want IV sedation are referred to an oral surgeon.
Related reading
Wisdom teeth are worth monitoring whether or not they ever need to come out. Mellow Family Dental Care, Unit 150–20528 Lougheed Highway, West Maple Ridge. Call 604.457.2273.
Sources: Ghaeminia H, et al. Surgical removal versus retention for the management of asymptomatic disease-free impacted wisdom teeth. Cochrane Database of Systematic Reviews 2020. Link · AAOMS White Paper on Third Molar Management · Kostares E, et al. Prevalence of alveolar osteitis following third molar extraction: meta-analysis. 2024. Link · Bloomer CR. Alveolar osteitis prevention by immediate placement of medicated packing. Link · ADA MouthHealthy — Dry Socket
Mellow Family Dental Care provides wisdom tooth assessment, imaging, monitoring, and extraction under local anesthetic or oral sedation. IV sedation and general anesthesia are not offered; complicated cases and patients requiring IV sedation are referred to an oral surgeon. This article is general information and does not replace an in-person dental exam. Always follow the specific post-operative instructions given by the clinician who performed your procedure.
