From 6 to 30 months
Baby teeth can start appearing at 6 months, but some babies don't have teeth until 1 year of age.
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; totaling 20 teeth in all. A dentist can evaluate any oddly shaped or positioned teeth.