Yes they're glued on with some kind of superglue and cured with some kind of light. And they fall off. If you don't mind not biting on or into stuff with the teeth in question, maybe it will be OK but you have to be careful and that takes some of the fun out of eating. Plus it looks ridiculous to whomever you're eating with. I'm not talking saltwater taffy here, I mean the last one of mine that fell off (next tooth over from front incisors) was when I bit into a piece of crisp toast.