Cracked tooth, need help!

I had a cavity on one of my back teeth on the bottom, and i did not have time to get it fixed. I bit on my pen, and the tooth that had the cavity cracked and split down the middle. A couple days ago i was brushed my teeth and the half of the tooth that was wiggly came out. The other half is still in my mouth, and wont move. I see a little bit of tooth on the bottom, growing out maybe, but i don't know. I need to know if it was a baby or adult tooth. Need help immediately! Thank you.

[Jerome Tsang, DDS]

How old are you?  

[briana00]

im 13 years old

[briana00]

Well, im 13 if that helps. And the tooth didnt shatter, it split in half, so theres not little peices in my tooth, just one half of a tooth.

[Jerome Tsang, DDS]

At age 13, most likely the back tooth you're talking about is an adult tooth.  Most, if not all, of the baby teeth are gone by age 12.  You're going to need to see a dentist and find out if the tooth is save-able.  If it isn't, they may need to remove it.  If it is, then they'll probably need to do a root canal and a crown in the future.

[briana00]

But if I see a little bit of tooth coming out from the bottom, would that mean that the adult tooth is just growing in now? And aren't the back teeth the last to fall out?

[Jerome Tsang, DDS]

Actually the eruption sequence of teeth isn't necessarily front to back.  The last tooth on the bottom would be the back molar, the last tooth on the top is the canine tooth.

But at age 6, your first adult molar comes out behind your baby teeth.  The 2nd molar which is in front of your wisdom teeth comes out at age 12.  So my guess is that if its a back molar with a large cavity, it was probably your 6 yr old molar because I would be surprised to have that large a cavity on a molar that just came out at age 12.

[briana00]

No, it is definitely not a molar, because it is not the very back tooth, it is a tooth close to the back. Sorry, I should have been more clear. It is on the left side of my mouth, second last.

[Jerome Tsang, DDS]

Sorry.  I can't really answer then.  If its a baby tooth, they'll probably remove it and depending on where the adult tooth is, they'll allow it to erupt out.  If its an adult tooth, then they'll either try to save it with possibly a root canal and crown or they'll remove it and replace it with a bridge or implant.

[briana00]

Thank you, the other half is now becoming wiggly, so i think it is just a baby tooth. But thank you for all your help.

[briana00]

I just have one more question. The area where the tooth is is starting to hurt a lot. Is that just because the tooth is going to fall out?

[Jerome Tsang, DDS]

Well, if its wiggly it doesn't necessarily mean its a baby tooth.  It could be that the other side is broken as well.  The roots are below the gumline and those are probably still pretty stable.  If that's the case, then the top of the tooth where its above the gumline may break off but the roots are still in there.