Why Do Wisdom Teeth Come Out?
Wisdom teeth extraction is one of the most common surgical procedures dentists perform, with millions done every year. Your wisdom teeth are your third set of molars that come in during your late teens or early twenties. Sometimes they come in perfectly and cause no problems. But often, they're impacted (stuck under the gum or bone), partially erupted, or positioned at odd angles that make them difficult to clean. When your dentist recommends extraction, it's usually because keeping them would create problems like infection, damage to neighboring teeth, or chronic pain.
While wisdom teeth extraction is routine and generally very safe, it does carry some risks you should understand before your procedure. Knowing what can happen helps you prepare mentally, recognize warning signs if something goes wrong, and take proper steps to prevent complications.
Nerve Injury: The Most Serious Risk
The most significant risk of wisdom teeth extraction is nerve damage. Your lower jaw contains important nerves that provide feeling to your lower lip, chin, gums, and tongue. During wisdom teeth extraction, these nerves—which lie very close to your teeth—can sometimes get stretched, bruised, or even injured.
The good news is that temporary nerve irritation happens fairly often (up to 15% of extractions) but usually resolves within a few weeks to a few months as the nerve heals. You might experience numbness, tingling, or slight burning sensations in your lip or tongue. These typically fade completely as healing progresses.
The less common but more serious scenario is permanent nerve damage, which occurs in about 1% of extractions. This means you could experience lifelong numbness or abnormal sensations in your lip, chin, or tongue. This complication is rare, but it's serious enough that you should understand it exists. Permanent nerve injury is life-changing for some patients because they live with altered sensation forever. Dentists with more experience and training have lower complication rates than those with limited surgical experience, so ask about your surgeon's experience with difficult extractions.
Tongue Sensation Loss: Another Nerve Concern
A separate nerve provides sensation to your tongue and the floor of your mouth. This nerve can also be injured during wisdom teeth extraction, though less commonly than lower jaw nerve damage. If injured, your tongue might feel numb or have strange sensations. You might have difficulty sensing food texture or temperature, making eating less enjoyable and less safe. Some patients also experience difficulty with speech clarity.
This type of nerve injury is particularly slow to heal compared to other nerve injuries, and permanent tongue numbness occurs in 2-4% of cases where temporary dysfunction was initially noted. Recovery can take months or even years if it happens at all. Proper surgical technique that carefully protects this nerve significantly reduces risk. Your surgeon's experience matters tremendously for preventing this complication.
Dry Socket: The Most Common Complication
Dry socket (technically called alveolar osteitis) is probably the most common complication after wisdom tooth extraction, affecting 4-12% of routine extractions and 15-30% of impacted wisdom tooth removals. Here's what happens: after your tooth comes out, a blood clot normally forms in the socket. This clot protects the exposed bone underneath while it heals.
Sometimes this clot doesn't form properly or falls out prematurely. When the bone becomes exposed to your mouth environment, it becomes extremely painful—often far more painful than the original extraction. You might notice severe pain starting 3-5 days after extraction, foul-smelling breath, visible bone in the socket, or a bad taste in your mouth.
Smokers have a four times higher risk of dry socket than non-smokers, so avoiding smoking for at least 48-72 hours after surgery is crucial. Women using oral contraceptives also have slightly elevated risk. If you develop dry socket, call your dentist.
Treatment involves careful irrigation and placement of soothing medication in the socket. Pain usually improves within 7-10 days. See our guide on Post-operative Instructions for detailed prevention tips.
Sinus Communication: Upper Wisdom Teeth Risk
If your surgeon removes upper wisdom teeth (which are close to your sinuses), there's a small chance the tooth socket might communicate directly with your sinus cavity. This happens in about 0.5-1% of upper wisdom tooth extractions. A small hole between your mouth and sinus might close on its own within weeks if protected properly. But larger holes might need surgical closure.
If this happens, you might experience air passing through the socket when you talk, liquid entering your sinus when you eat, or recurrent sinus infections. Your surgeon can usually repair this at the time of extraction, preventing long-term problems. If you notice unusual symptoms like air escaping or fluid entering your sinus after upper wisdom tooth extraction, mention them to your dentist immediately.
Jaw Fracture: A Rare but Serious Complication
In rare cases (0.004-0.3% of routine extractions), the jaw can fracture during or shortly after wisdom tooth removal. This happens more often when teeth are deeply impacted and require extensive bone removal, or when the surgeon applies excessive force. Older patients, patients with osteoporosis, and men (who typically have stronger chewing forces) have slightly higher risk. For more on this topic, see our guide on Oral Surgical Success Rates: Defining, Measuring, and.
If your jaw fractures, you'll need additional treatment—sometimes just dietary restriction and time, sometimes surgical fixation with plates and screws. Your jaw might be uncomfortable or limited in movement for weeks to months while it heals. The risk is low, but it's one reason why surgeons with extensive experience performing difficult extractions have better outcomes than less experienced practitioners.
Infection After Extraction
Infection after wisdom tooth extraction occurs in about 5-10% of cases, though most are minor and respond quickly to treatment. Signs of infection include increasing pain or swelling after the first few days, pus or discharge from the socket, foul odor, or fever above 101 degrees Fahrenheit. Minor infections usually respond to careful rinsing, antimicrobial mouth rinse, and sometimes antibiotics.
More serious infections are rare but possible. If bacteria spread beyond the socket, you could develop cellulitis (spreading soft tissue infection) or other serious conditions requiring hospitalization and intravenous antibiotics. This is very rare with modern antibiotic therapy, but it's why you should report any signs of infection to your dentist promptly.
Patients with weakened immune systems, diabetes, or those on certain medications have elevated infection risk and may benefit from preventive antibiotics. Always inform your surgeon about your health conditions and medications before extraction so they can take appropriate precautions.
Managing Your Recovery Properly
Most complications can be prevented or minimized through proper post-extraction care. Follow your surgeon's instructions carefully regarding diet, activity level, and medication use. Stick to soft foods for the first week. Avoid smoking, drinking through straws, or vigorous rinsing for at least 48-72 hours after surgery. These activities can dislodge the protective blood clot and lead to dry socket.
Take prescribed pain medication as directed. Some discomfort is normal, but medication helps you rest, which promotes healing. Ice packs during the first 48 hours reduce swelling and pain. After 48 hours, warm compresses feel better as healing progresses.
Avoid strenuous activity for several days. Your body's healing processes work best when you're resting, not exercising. If you have significant bleeding that doesn't slow with gentle pressure, increasing pain after day three, signs of infection, or fever, contact your surgeon immediately. Most issues are minor and easily managed, but it's better to check when you're unsure.
Why Your Surgeon Matters
Studies show that surgeons with extensive experience and specialized training have significantly lower complication rates than those with limited surgical experience. If your regular dentist refers you to an oral surgeon for wisdom tooth extraction, especially if your teeth are impacted or your anatomy is complicated, that's a good thing. Specialists have training and volume of experience that reduces your risk.
Don't hesitate to ask your surgeon about their experience and complication rates. It's completely reasonable to ask how many wisdom tooth extractions they've performed and what percentage of their patients experience complications. More experienced surgeons prevent problems before they start through careful technique and proper patient selection.
Every patient's situation is unique. Talk to your dentist about the best approach for your specific needs.Conclusion
: Preparation and Awareness
Wisdom teeth extraction is very common and generally very safe, but it does carry real risks you should understand. Nerve injury (temporary in most cases, permanent rarely), dry socket, sinus communication, jaw fracture, and infection are all possible complications. However, most patients heal uneventfully without serious problems.
Your role in preventing complications is significant: avoid smoking before and after surgery, follow post-operative instructions carefully, don't disturb the extraction sites, and watch for warning signs. If something feels wrong during healing, contact your surgeon—it's better to check than to worry silently. Understanding the risks going into surgery, choosing an experienced surgeon, and following proper aftercare significantly reduces your chance of complications. Most of your healing happens at home, so your commitment to following instructions matters tremendously.
> Key Takeaway: Wisdom teeth extraction is a very common procedure, but it does carry some real risks you should understand. Possible complications include temporary nerve damage (fairly common) or permanent nerve damage (rare) affecting sensation in your lower lip, tongue, or chin. Other complications include dry socket (severe pain starting days after extraction), sinus communication, jaw fracture, or infection. Most complications are preventable through proper post-operative care including avoiding smoking, following your surgeon's instructions carefully, and protecting the extraction site. Choosing an experienced surgeon and being proactive about your recovery significantly reduces your risk of complications and speeds your healing.