Medically reviewed by Dr. Waise Ebrahimi, DDS
There is one exception worth knowing. A small number of people have extra teeth beyond the usual four, called supernumerary teeth, and one of these can appear after your originals are gone. That is not regrowth; it is a separate tooth that was already forming.
So if a tooth seems to come back months or even years after surgery, the cause is almost always something else. The usual suspects are a bone spur working its way to the surface, a leftover root fragment, normal gum healing, or a supernumerary tooth finally showing up on an X-ray.
Third molars are the last teeth to come in, usually between the ages of 17 and 25. Most people get four, one in each corner of the jaw, though some never develop any at all.
Why Do We Have Wisdom Teeth?
The reason traces back to evolution and how our ancestors lived. Early humans had much larger jaws that could easily fit more teeth. Those extra molars helped them chew tough, fibrous foods like roots, nuts, and raw meat that needed serious grinding power.
Over thousands of years, our jaws gradually shrank as diets became softer, but the number of teeth we develop stayed exactly the same. That size mismatch is why third molars so often come in impacted or at strange angles; there simply isn’t enough room for them to emerge properly.
Once a wisdom tooth finishes erupting, it stops growing entirely, roots included; it doesn’t keep developing the way some people assume. That lack of room is also why these back teeth cause so much crowding, pain, and infection, which is why they so often need to come out.
How Many Wisdom Teeth Can You Get?
Most people develop four wisdom teeth. Some have fewer or none, and a small number end up with extras. If you’ve ever wondered whether you can have five wisdom teeth, or even six wisdom teeth, the answer is yes: it’s rare, but it happens.
These extras come from a condition called hyperdontia, which is also the answer if you’re asking yourself why you have five wisdom teeth in the first place. It’s usually spotted on a dental X-ray, and a fifth or sixth tooth often appears later than the others and may need surgical removal if it causes pain or crowding. If removal becomes necessary, knowing what wisdom tooth extraction typically costs can help you plan ahead.
Research estimates that supernumerary teeth affect roughly 2% of people, and the trait can run in families, according to a study indexed by the National Library of Medicine. Hyperdontia is also sometimes linked to syndromes such as Gardner’s syndrome or cleidocranial dysplasia.
Is It Rare to Have 5 or 6 Wisdom Teeth?
Yes, having five or six wisdom teeth is rare. It comes from hyperdontia, the same condition that causes extra teeth to form elsewhere in the mouth. A fifth or sixth wisdom tooth is usually caught on a routine X-ray rather than felt, and it doesn’t need to come out unless it’s causing pain, crowding, or trouble keeping the area clean.
Why Do We Need to Remove Wisdom Teeth?
You might not always need to have your wisdom teeth removed. In many cases, though, it is the best move for your long-term oral health, since partially erupted teeth open a pathway for bacteria and raise the risk of pericoronitis. That painful gum infection often forms around third molars.
Once your third molars are out, knowing how to recover well from wisdom teeth removal makes a real difference in how quickly you heal. Below are some additional common reasons for extraction:
- Impaction: The tooth is stuck under your gums and cannot erupt properly.
- Crowding: These molars can push neighboring teeth out of line, ruining your alignment.
- Infection or decay: They sit far back and are harder to clean, which makes them prone to cavities and gum disease.
- Cyst formation: Left untreated, an impacted tooth can lead to cysts or damage to the jawbone.
Can Wisdom Teeth Come Back?
Patients often ask whether wisdom teeth can grow back after extraction, or whether one can quietly regrow. Once a tooth and its roots are fully removed, it cannot return. That’s true for any permanent tooth, a molar included; once it’s extracted, another tooth will not grow in its place. Still, a few things can create the sensation that a molar is re-emerging, and each has a simple explanation.
1. Supernumerary Teeth (Extra Wisdom Teeth)
Although it is uncommon, having more than four back molars is medically possible. These are supernumerary teeth, and they occur in roughly 2% of people. If one of them erupts after your originals are gone, it can feel like you grew another wisdom tooth, when it was actually there all along.
2. Retained Root Fragments
Sometimes a small piece of root is left behind during the extraction. Over time it can shift slightly or become noticeable, creating the feeling that the tooth is coming back.
This is not regrowth, and it is usually fixed with a quick follow-up procedure.
3. Bone Spurs (Sequestrum)
Sometimes a small piece of jawbone works its way to the surface as the extraction site heals. Dentists call this a bone spur, or sequestrum. It can feel sharp or hard under your tongue, almost like a tiny tooth trying to push through.
This is a normal part of healing, not a new tooth. Most bone spurs are small and work their way out on their own within a few weeks. If one is large or keeps irritating your tongue or cheek, your dentist can remove it in a quick, straightforward visit.
4. Gum and Bone Healing
As your mouth heals, new tissue forms in the area where the tooth used to sit. That can bring a sense of pressure or fullness, especially when nearby molars drift forward to fill the gap. This settles down as healing finishes, typically within a few months.
When to See a Dentist
Most hard spots after extraction turn out to be harmless, but a few signs mean it’s worth getting checked rather than waiting it out. Call your dentist within a week or two if you notice any of the following:
- A lump that’s growing, changing shape, or getting more painful
- New pain in a spot that had already healed
- Swelling, redness, or a bad taste near the site
- Something sharp enough to cut your tongue or cheek
- What looks like a new tooth breaking through the gum
A quick exam, and an X-ray if needed, usually settles the question fast. In most cases the fix is minor, smoothing a bone spur or monitoring a fragment, not another extraction.
Wisdom Teeth FAQs
Can wisdom teeth grow back after being removed?
No. Once a wisdom tooth and its roots are fully removed, it cannot grow back. Anything that shows up later at the site is something else, most often a bone spur, a retained root fragment, or a supernumerary tooth.
Can you have more than 4 wisdom teeth?
Yes, though it’s uncommon. Extra wisdom teeth are called supernumerary teeth, a form of hyperdontia that affects roughly 2% of people, and a fifth or sixth tooth is usually spotted on a routine X-ray.
Can a wisdom tooth grow back after extraction?
No, not once it’s been fully removed. If something feels like a new tooth is emerging, it’s more likely a supernumerary tooth that was already there, just delayed in coming in.
What does a bone spur feel like after wisdom tooth removal?
A bone spur usually feels like a small, hard, sometimes sharp point under the gum where the tooth used to be. It’s a normal part of healing and often works its way out on its own within a few weeks.
Can your wisdom teeth regrow years after removal?
No. Wisdom teeth don’t regrow, even years later. A hard spot that appears long after surgery is almost always a retained fragment settling into place or a supernumerary tooth finally erupting.
How rare is it to have 6 wisdom teeth?
It’s rare. Hyperdontia, the condition behind extra wisdom teeth, affects roughly 2% of people, and having six is less common than having five.
What if my wisdom tooth was only partially removed?
If part of the original tooth, usually a root tip, was intentionally left behind to avoid nerve damage, it can sometimes shift over time and become noticeable years later. This isn’t a new tooth growing in; it’s a small piece of the original one finally settling or surfacing. An X-ray confirms it right away.
Will wisdom teeth ever be able to regrow in the future?
Not yet, and not specifically for extracted teeth. The most advanced work right now is a Japanese drug trial studying whether children born without certain teeth can grow them in, not whether adults can regrow a tooth after extraction, and even that treatment hasn’t been approved for human use. Stem cell research into tooth regrowth is ongoing, but nothing has reached patients yet. For now, an extracted wisdom tooth is gone for good.
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