2 lower middle teeth
Baby teeth can start appearing at 6 months, but some babies don't have teeth until 1 year of age.
There are 10 upper and 10 lower teeth, for a total of 20 baby teeth. The central incisors come first, usually lower before upper, and appear at 6-8 months. Lateral incisors appear at 9-10 months. First molars and canines appear at about 18 months, and second molars at 24-30 months.