We just learned about the Tooth - Buds.
Another part of teeth growing is the Tooth - Cap stage.
The little buds that we already learned about keep growing and getting bigger, and they start to take a shape like a cap.
Later on these buds will turn into the hard enamel that makes up the outside of the tooth.

(from: wikipedia - human tooth development)
Kid Facts - Blast from the past: Superior Costotransverse Ligament