Well, I have a funny story that will make you all probably laugh and ease the mind of the OP.
A fellow teacher and friend at work typically would put $1 under the pillow of her children. Well, her daughter lost her second (or at least not her first) while at Grammie's house. You would never believe it....the toothfairy didn't only give her $1, she gave her 4.......coins, a penny, nickel, dime, and a quarter! According to mom, you would have thought she won the lottery...."mommy, grammies toothfairy pays more than our toothfairy"
Speaking of lost teeth...last year one of my first graders fell off the bottom of the slide and her tooth fell out on the playground...what I didn't know was that when she came up to me with a bloody mouth it was because she lost her tooth (it was loose anyway so no worries). I found out over an hour later that her tooth fell out and she didn't have it. Worst part...it was her first tooth! So, I did what anyone would do, I went out to the playground during my prep time thinking that there was no way I'd find her tooth because since our recess, three hundred other children had been running around that playground. I couldn't believe my eyes when there, under the slide completely untouched...was the tiniest of teeth! It's amazing how sometimes you can find them and others you cannot!