Review (4/5): worked for us
Our speech pathologist suggested we get the Nuk for our daughter to help stimulate her tongue and gums, to encourage her to eat and to teach her how to use her tongue. It's worked OK for us, but for what it is, it's expensive. Additionally, I would love to see this version come with the round "stopper" the toothbrush comes with, to help prevent her from sticking the Nuk too far into her mouth.