A child’s baby teeth (primary teeth) begin to loosen and fall out on their own to make room for permanent teeth at about age 6. Timing can vary, though, and girls generally lose baby teeth earlier than do boys. The last baby teeth typically fall out by age 12 or 13.
Baby teeth usually fall out in the order in which they erupted — first the two bottom front teeth (lower central incisors), followed by the two top front teeth (upper central incisors), the lateral incisors, first molars, canines, and second molars. If a child loses a baby tooth early as a result of tooth decay or an accident, a permanent tooth may erupt early and potentially come in crooked due to limited space.
— Source: Mayo Clinic