
I think it is not safe to use a toothpaste for a toddler even if the manufacturer says it is safe. I never used a toothpaste for my son who is a toddler, as the dentist has recommended to wait until he can spit the toothpaste out.
In Akachan honpu and Kawachi, it is possible to find wet tissues for cleaning toddler teeth, I think it is the safest one. The tissues are called in japanese: HAMIGAKI NAPPU (歯磨きナップ).