What do you think about preserving tooth stem cells?

Hi everybody:
Layan is almost six; it looks like she will start changing her milk teeth soon. I have been investigating lately the possibility of preserving stem cells from her teeth for future use. This service is available now in Jordan and stem cells from milk teeth are stored in a bio-bank in England for 25 years. I know that this field is promising and many researches are on-going now but I wanted to hear from you what your thoughts are in this regard. Would you preserve your child's tooth or do you think this is another false hope?

I'd definitely take a chance doing that. How expensive is it?

It is not really expensive as I thought it would be; the full cost is around 6000 dollars.

That sounds reasonable, especially for 25 years.