At birth, which of the following dental tissues are typically calcified?

At birth, the primary dental tissues that are typically calcified include all deciduous teeth and the first permanent molars. The first permanent molars, also known as the "6-year molars," start forming before birth and are often already partially calcified by the time a child is born. In contrast, other permanent teeth, including incisors and canines, begin calcifying at different stages of childhood after birth.

This understanding highlights the developmental timeline of tooth evolution and indicates that certain teeth, especially those that play a crucial role in early development and mastication, are prepared to emerge sooner. This early calcification of both the deciduous teeth and the first permanent molars provides an initial set of teeth for infants to assist in the process of eating and developing oral skills as they grow.