Your children’s primary or “baby” teeth begin their formation well before birth. At around 4-6 months, the first primary teeth begin to erupt through the gum: in general the lower central incisors are first, followed closely by the upper central incisors. The primary teeth continue to appear at a varying pace and order, reaching its expected number of 20 at around 3 years of age.
The primary teeth eventually get replaced by the permanent teeth (front 8 teeth at 6-8 years of age, and back cuspids/ molar teeth at around 10-13 years of age). But the primary teeth are very important in the development of the permanent teeth and in the overall oral health of your child growing to become an adult. Neglected cavities and other issues with the primary teeth frequently lead to problems that impact the permanent teeth.