Wisdom Teeth Removal Risks: An Honest Look at the Evidence
Medically reviewed by Dr. Sergio Calleja, DDS, MPH — Board-Certified Oral & Maxillofacial Surgeon · Last reviewed 2026-05-22
Wisdom teeth removal is extremely common and, in trained hands, very safe — but "very safe" is not "risk-free," and you deserve real numbers rather than reassurance. The most frequent problems are temporary and manageable; the serious ones are rare and, importantly, most of them can be predicted on a 3D scan before surgery.
Below are the risks that matter, what published studies say about how often they occur, and what we specifically do to reduce each one.
Dry Socket (the most common complication)
After a tooth is removed, a blood clot forms in the socket and protects the bone while gum tissue grows over it. If that clot is lost too early — dislodged by suction or dissolved prematurely — the bone is exposed. This is dry socket, medically called alveolar osteitis: a throbbing ache that typically starts two to five days after surgery and can radiate toward the ear or temple, often with a bad taste. AAOMS reports it after roughly 4% of extractions, and published overall rates cluster around 2–5%; it is more common with lower wisdom teeth, in smokers, and in patients taking oral contraceptives. It is miserable but not dangerous, and it does not undo your surgery.
How we reduce this riskPrevention is mostly behavioral, and we drill it: no straws, no smoking or vaping, and no forceful spitting or rinsing for at least the first 72 hours. If dry socket happens anyway, a same-day visit for a medicated dressing typically relieves the pain dramatically within hours.
Infection
True post-operative infection is uncommon — AAOMS describes it as relatively rare. Signs are fever, increasing (rather than decreasing) pain and swelling after the first few days, a bad taste, or pus from the site. Most infections respond quickly to antibiotics; occasionally a site needs to be drained.
How we reduce this riskSterile technique, thorough cleaning of each socket, targeted antibiotics when the situation calls for them (not routinely for everyone), and structured follow-up so anything brewing is caught early.
Nerve Injury and Numbness (lower wisdom teeth)
The inferior alveolar nerve — the nerve that supplies feeling to your lower lip and chin — runs through a canal in the lower jaw, often close to lower wisdom tooth roots. Published studies report temporary numbness or tingling after roughly 0.4–8% of lower third molar extractions, with most sensation recovering over weeks to months. Permanent change is rare: published rates are generally under 1%, with large series reporting figures around 1 in 2,500 extractions. The lingual nerve, which supplies feeling and taste to the tongue, is at lower risk still — permanent injury is reported in well under 1% of cases in most series. Important: these nerves carry feeling only. Wisdom tooth surgery cannot paralyze your face.
How we reduce this riskThis is exactly why we take a 3D CBCT scan on every surgical case: it shows the true relationship between the roots and the nerve canal, not the flattened overlap a regular X-ray shows. When a root genuinely wraps around the nerve, Dr. Calleja discusses alternatives such as coronectomy — removing the crown and deliberately leaving the root fragment undisturbed against the nerve — and you know your personal risk level before you consent to anything.
Sinus Communication (upper wisdom teeth)
The roots of upper wisdom teeth often sit just beneath — or protrude into — the maxillary sinus, the air space in your cheekbone. Occasionally removing the tooth leaves a small opening between mouth and sinus, called an oroantral communication. Published series report this in roughly 1–5% of upper third molar extractions, more often in older patients with fully formed roots. Small openings usually heal on their own; larger ones are closed with a minor procedure.
How we reduce this riskThe CBCT scan shows sinus proximity before surgery, technique is adjusted accordingly, and when a communication does occur it is identified and managed immediately — plus you get simple sinus precautions (no nose blowing, sneeze with your mouth open) while it heals.
Bleeding
Some oozing for the first day is completely normal. Bleeding that soaks gauze repeatedly or will not slow with pressure is unusual and typically relates to medications or medical conditions rather than the surgery itself.
How we reduce this riskYour medications and medical history are screened in advance (blood thinners are coordinated with your physician, not just stopped), each socket is checked for bleeding before you leave, and firm gauze pressure — plus the classic moist tea-bag trick — controls nearly all bleeding at home.
Swelling, Bruising, and Limited Jaw Opening (Trismus)
These are expected effects of surgery near the jaw muscles, not complications: cheek swelling peaks around days two to three, bruising may drift down the jawline, and the jaw can feel stiff and limited for several days to a couple of weeks. Persistent tightness beyond two to three weeks is worth a check.
How we reduce this riskIce cycles for the first 48 hours, head elevation, anti-inflammatory medication on a schedule, and gentle jaw-stretching guidance at follow-up all shorten this phase.
How Age Changes the Math
Almost every risk on this list rises with age. In the late teens and early 20s, wisdom tooth roots are only two-thirds formed, the surrounding bone is softer, and the roots have not yet grown down toward the nerve canal — so surgery is shorter, nerve contact is less common, and healing is faster. By the 30s and 40s, roots are fully formed and often hooked, bone is denser, and dry socket and nerve-contact rates climb.
This is the evidence behind the AAOMS recommendation to evaluate wisdom teeth in the teenage years rather than waiting for pain. It does not mean older adults should avoid needed surgery — untreated infection, decay, or a growing cyst is riskier than removal at any age. It means the best time to make the decision is early, with a 3D scan and a board-certified surgeon walking you through your specific anatomy.
Call Us Right Away If You Notice
- Fever above 100.4°F (38°C)
- Bleeding that does not slow with 30–45 minutes of firm gauze pressure
- Throbbing pain that starts or worsens on days 2–5 instead of improving — the dry socket pattern
- Swelling, redness, or a bad taste that increases after day 3, or any pus from the site
- Numbness of the lip, chin, or tongue that persists once all the anesthesia should have worn off
- Difficulty breathing or swallowing — for emergencies, call 911 first
Office: (301) 645-6911 (Waldorf) · (301) 863-8107 (California, MD). For emergencies, call 911.
Frequently Asked Questions
How common is dry socket after wisdom teeth removal?
AAOMS cites roughly 4% of extractions, and most published figures fall in the 2–5% range overall — higher for impacted lower wisdom teeth, smokers, and patients on oral contraceptives. It typically announces itself as throbbing pain starting two to five days after surgery. It is treatable the same day with a medicated dressing.
Can wisdom teeth removal cause permanent numbness?
It is possible but rare. Temporary numbness or tingling of the lip or chin occurs after roughly 0.4–8% of lower wisdom tooth extractions in published studies, and the large majority resolves over weeks to months. Permanent altered sensation is reported in well under 1% of cases — figures around 1 in 2,500 appear in large series. Your personal risk depends on how close your roots sit to the nerve, which is exactly what the 3D CBCT scan shows before surgery.
Can wisdom teeth removal paralyze your face?
No. The nerves near wisdom teeth carry sensation — feeling in the lip, chin, and tongue — not movement. The nerve that moves your facial muscles is nowhere near the surgical field of a wisdom tooth extraction.
Is it dangerous to leave impacted wisdom teeth in?
Sometimes. A fully buried, disease-free tooth can often be monitored safely with periodic X-rays. But partly erupted teeth trap bacteria and tend to cause infections and decay over time, and buried teeth occasionally develop cysts that quietly damage the jaw. "Watch and wait" is a legitimate plan only when someone is actually watching — which means regular imaging, not ignoring the teeth.
Is IV sedation safe for wisdom teeth removal?
Office-based sedation by oral and maxillofacial surgeons has a long, well-documented safety record. Anesthesia training is built into the four-to-six-year OMS residency, and the offices are equipped with continuous monitoring and emergency protocols. Dr. Calleja reviews your medical history at consultation and will tell you plainly if you are safer in a hospital setting — which is uncommon.
What happens if a root breaks off during the extraction?
Small root fragments are usually retrieved. Occasionally — when a tiny fragment sits directly on the nerve or in the sinus — the safest evidence-based decision is to leave it, because chasing it causes more harm than it ever would. If that applies to you, you will be told exactly what was left, why, and how it will be monitored.
Have Questions About Wisdom Teeth Removal?
Dr. Calleja evaluates every case personally at the Waldorf and California, MD offices — consultations in English or Spanish.
This page is general patient education, not personal medical advice. Every patient's anatomy and health history are different — treatment details, risks, and recovery vary case by case and are reviewed with you during your consultation. For emergencies, call 911.