Wisdom teeth typically come in between ages 17 and 25, and for most people, the process involves at least some discomfort. About half of all adults will have at least one wisdom tooth extracted by age 25, but not everyone needs surgery. What you should do depends on whether your teeth are erupting normally, coming in at an angle, or causing signs of infection.
What Normal Eruption Feels Like
As a wisdom tooth pushes through the gum, you’ll likely feel pressure and soreness at the very back of your jaw. The gum tissue over the tooth may look red or swollen, and it might be tender when you chew. This is normal. A straightforward eruption episode usually lasts 3 to 4 days and resolves on its own with good oral hygiene.
During this window, rinse with warm salt water a few times a day (a couple teaspoons of salt dissolved in a cup of warm water). Brush gently around the area to keep food and bacteria from collecting under the gum flap. Over-the-counter pain relievers like ibuprofen or acetaminophen can take the edge off. If the soreness fades within a few days, you’re likely dealing with routine eruption and nothing more.
Signs That Something Is Wrong
The gum tissue that partially covers an emerging wisdom tooth can trap food and bacteria, leading to an infection called pericoronitis. This is the most common complication of wisdom teeth coming in, and it ranges from mild to serious.
Mild (chronic) pericoronitis shows up as a dull ache near the back teeth, bad breath, and a persistent bad taste. It tends to come and go. Acute pericoronitis is more intense: severe pain, visible swelling and redness of the gum, pus or drainage, fever, swollen lymph nodes in the neck, and sometimes difficulty opening your mouth or swallowing.
If your pain lasts longer than 3 to 4 days, gets worse instead of better, or comes with any of the acute symptoms listed above, you need to see a dentist. Facial swelling combined with difficulty swallowing or fever is a sign of spreading infection that requires urgent care.
How Your Dentist Evaluates Wisdom Teeth
Your dentist will start with a panoramic X-ray, which captures your entire jaw in a single image. This shows whether your wisdom teeth are erupting straight, angled, or trapped beneath the bone. It also reveals whether they’re crowding neighboring teeth or sitting close to the nerve that runs through your lower jaw.
Panoramic X-rays are two-dimensional, though, so they can’t always show exactly how close a tooth root sits to that nerve. If the standard X-ray suggests the roots and nerve may be touching, your dentist may order a cone-beam CT scan, which produces a 3D image. This lets the surgeon see the precise relationship between the tooth and surrounding structures and plan a safer extraction. If the panoramic image clearly shows space between the tooth and the nerve, the CT scan isn’t necessary.
When Extraction Is Recommended
The American Association of Oral and Maxillofacial Surgeons recommends removing wisdom teeth that are associated with disease or at high risk of developing it. That includes teeth causing repeated infections, cavities, gum disease, or damage to neighboring teeth. Removal is also favored when a wisdom tooth is non-functional (not meeting another tooth when you bite), blocking orthodontic treatment, or preventing a second molar from erupting properly.
There are four types of impaction, and each carries different risks:
- Mesial impaction is the most common. The tooth angles toward the front of your mouth, pressing against the second molar.
- Horizontal impaction means the tooth is lying completely on its side beneath the gum. This type is often painful because it puts direct pressure on neighboring teeth.
- Vertical impaction is when the tooth points the right direction but remains trapped under the gum.
- Distal impaction, the rarest type, angles the tooth toward the back of the mouth.
Impacted teeth that stay buried can eventually cause cavities on the adjacent molar, gum disease, or cyst formation around the tooth. Dentists recommend annual X-rays for any impacted wisdom tooth you choose to keep so that these problems are caught early.
When You Can Keep Them
If your wisdom teeth erupt fully, line up with your bite, and aren’t causing infections or crowding, there’s no automatic reason to remove them. The clinical guideline is straightforward: in the absence of disease or significant risk of disease, monitoring with regular checkups and X-rays is appropriate.
Keeping wisdom teeth healthy takes extra effort because they sit so far back in your mouth. Use a soft-bristled toothbrush with a small head so you can actually reach behind the last tooth. Brush in small circles on all surfaces at least twice a day. Floss daily, and consider a water flosser if traditional floss is hard to maneuver back there. Your dentist will check these teeth at your regular six-month visits, watching for early signs of decay or gum problems that are easy to miss on your own.
What Happens If a Tooth Needs to Come Out
If your dentist identifies pericoronitis, the first step is usually flushing the area to remove trapped debris and bacteria. You may be given a prescription mouthwash containing chlorhexidine to use at home, or oral antibiotics if the infection has spread. In some cases, the dentist removes just the gum flap covering the tooth (a short procedure done under local anesthesia in under an hour), which can solve the problem without extracting the tooth itself.
When extraction is the better option, an oral surgeon performs the procedure with local anesthesia, sedation, or both. Recovery follows a fairly predictable timeline:
- Days 0 to 2: A blood clot forms in the socket. Expect moderate swelling, some bruising along the jaw or cheeks, and dark red bleeding that tapers off within a few hours.
- Days 3 to 5: Swelling peaks and then begins to drop. Pain eases for most people. A white or yellowish film (fibrin) may appear over the socket. This looks alarming but is a normal protective layer, not pus.
- Days 6 to 14: The gum tissue starts closing over the socket. Redness fades, any stitches dissolve or fall out, and eating gets noticeably easier.
- Weeks 3 to 4: The socket fills in with new tissue and the gum reshapes itself.
The single most important thing during the first week is protecting the blood clot. Avoid using straws, spitting forcefully, or any sucking motion. Losing that clot exposes the bone underneath and causes a painful condition called dry socket, which significantly slows healing.
What to Do Right Now
If your wisdom teeth are just starting to come in and the discomfort is mild, keep the area clean with salt water rinses and gentle brushing, manage pain with over-the-counter medication, and monitor for changes. If the pain is worsening, you notice swelling or pus, or the discomfort has lasted more than a few days, schedule a dental visit. A panoramic X-ray will show exactly what’s happening beneath the gum and whether your teeth have room to come in or are heading for trouble. By age 25, roughly half of all adults have needed at least one wisdom tooth removed, so if extraction ends up being the recommendation, you’re in very common company.