Nice take on the theme! I'm not sure about the movement mechanics though. I get that the player is a tooth fairy, but the way flying kind of toggles gravity was a bit off. Maybe a better way to implement flying would be to give the character multiple floaty jumps? Overall a good idea though, and I really liked the animations, especially the brushing one.

First of all I loved the teeth brushing animation, that looks great. The difficulty curve does drop off after a couple teeth fall out,  maybe if the decay sped up with less teeth, might've fixed the difficulty balancing. I see you attempted some complex movement too, which is hard to get right but you made it work. Also great use of the theme!

You really did well with using the theme! Good idea, the only thing I would mention is the controls didn't feel smooth or natural. It took me a while to get the hang of

I feel like the music doesn't really fit the spirit of the game, the controls also feel somewhat clunky

I see this is your first game you published, and I'd love to see your next one, I bet it will be better