Why is this Mosasaur tooth rattling ?

[Brevicollis]

Hello, I received this lovely Thalassotitan atrox tooth today, and I absolutely love it !

But then I noticed, when it's shaked, that it rattles like crazy !

 

Do  Mosasaur teeth have cavities ?

 

The tip was broken of once and was glued back, but I have crowns of the same species and they are completely solid.

No cavities in them at all. So it must be in the root instead, but have you ever heard of hollow Mosasaur roots ?

Me not. And I think, that this is something that you wont stumble across daily.

Any ideas ? Its completely real !

 

 

[Brevicollis]

For better experience, turn your phone as loud as possible! Then it sounds like in real life.

Edited May 15 by Brevicollis

[Jaybot]

Ancient man-child's rattler.

[Fossildude19]

Looks like the root has been repaired - it has a crack. 
I'm guessing some sand or other material got left inside when it was glued back together?

[Brevicollis]

Here you have some more pictures. @Fossildude19, where is the crack in the root that you are refering to ?

Edited May 15 by Brevicollis

[Brevicollis]

Oh, I just saw that the crown was glued back with a bit of plaster. That'll explain why. Theres also a piece of grass or hay in this tiny bit of crack fill mass. Still a nice tooth, at least they belong guaranteed to each other, and the restoration is so minor and almost not noticable. And in the end of the day : who cares ?

Edited May 15 by Brevicollis

[Yoda]

Loose filling ?? 

[Brevicollis]

4 hours ago, Yoda said:

Loose filling ?? 

Looks like if the moroccan dentist wasnt the best at doing his job 

Edited May 16 by Brevicollis