Baby tooth won't fall out (and "shark teeth"): what to do
When a permanent tooth grows in behind a baby tooth that hasn't shed, it's called "shark teeth." Learn when this resolves on its own and when your dentist should evaluate it.
Medically reviewed by Dr. Jose, DDS — July 20, 2026
What is “shark teeth”?
“Shark teeth” is the playful name for a situation where a permanent tooth grows in before the baby tooth above or below it has fallen out. Instead of the baby tooth shedding first and creating space, the new tooth erupts alongside it — so your child temporarily has two overlapping teeth in the same spot. This can look dramatic, but it’s a common part of how children’s teeth develop.
Why does this happen?
Every child’s body works at its own pace. Sometimes the permanent tooth is ready to erupt before the baby tooth’s root has fully dissolved. The baby tooth becomes loose gradually as the permanent tooth pushes up (or down), but the timing isn’t always perfect. This mismatch is normal and usually self-correcting.
When does it fix itself?
In most cases, the baby tooth loosens and falls out naturally within a few weeks after the permanent tooth appears. Your child may notice the baby tooth feeling wiggly and be able to gently work it free. Some children swallow it without realizing; others wiggle it out and keep it for the tooth fairy. The permanent tooth will then shift into proper position as the baby tooth leaves space.
When should you see a dentist?
Schedule a dental visit if:
- The baby tooth shows no sign of loosening after several weeks and seems stuck in place.
- Your child has pain or discomfort when chewing, or difficulty eating.
- You’re concerned about crowding. If multiple permanent teeth are coming in before their baby teeth shed, your dentist can help you understand whether intervention is needed.
- The permanent tooth is growing in at an odd angle. Your dentist can assess whether the baby tooth is blocking proper alignment.
Don’t try to force the baby tooth out at home. Aggressive pulling or wiggling can damage the tooth or hurt your child’s gums. If your dentist determines that the baby tooth needs removal, they have safe techniques to do so.
What will a dentist do?
Your child’s dentist will examine the teeth and gums, check how loose (or firmly attached) the baby tooth is, and look at the alignment of the incoming permanent tooth. If the baby tooth truly isn’t loosening and is blocking the permanent tooth, the dentist may gently remove it — a quick, painless procedure. Most of the time, reassurance and a “wait and see” plan are all that’s needed.
A note on crowding
If your child has “shark teeth” in multiple spots, or if you notice the incoming permanent teeth seem crowded, mention this to your dentist. They can track your child’s bite development over time and advise whether early evaluation by an orthodontist might be helpful later. Early detection of crowding can sometimes guide better outcomes, though most children don’t need braces or other treatment until the permanent teeth are mostly in.
How MediMouth helps
If your child has a tooth that won’t shed or you’re noticing crowding, use MediMouth to find a pediatric dentist in Arizona. A dentist can quickly reassure you, check your child’s bite and jaw development, and create a simple plan. Regular visits also mean your dentist will spot any issues early — giving you the clearest picture of your child’s dental future.
Frequently asked questions
Is 'shark teeth' normal?
Yes — when a permanent tooth grows in before the baby tooth has shed, it can look like your child has two rows of teeth. This happens fairly often and usually corrects itself as the baby tooth loosens and falls out naturally.
Should I try to pull out the baby tooth at home?
No. Don't force or wiggle it aggressively. Let it loosen naturally, and if it feels ready (very loose, barely hanging on), your child can gently work it out. If it's not loosening after several weeks, ask your dentist to check it.
When should we see a dentist about this?
If the baby tooth shows no sign of loosening within a few weeks, if your child has pain or difficulty eating, or if you're concerned about crowding, schedule a dental visit. Your dentist can assess whether the baby tooth needs gentle removal and ensure the permanent tooth is coming in properly.