Can kids get them really early? DS is 3.5 and got all 20 baby teeth a long time ago, but now he's acting like teeth are bothering him again. He told me they itch all the way in the back, and when I took a good look I thought I could see another molar waaay under the surface. Huh? I didn't even know they're supposed to get more molars at six till I started googling, but still, six is a long time away!