The document provides a timeline for the typical eruption of primary or "baby" teeth. It states that teeth begin forming before birth and erupt in stages from 6-33 months of age. First to erupt are usually the lower central incisors between 6-10 months, followed by the upper incisors from 8-12 months. The molars erupt from 13-19 months for the upper first molars and 14-18 months for the lower first molars. The canines come in from 16-23 months for the upper canines and 17-23 months for the lower canines. Most children have a full set of 20 baby teeth by around 3 years of age with the second molars erup