Figure 1. Key aspects of tooth development.

Tooth mineralization begins early in the second trimester, with completion of the enamel covered crown occurring 3–12 months after birth, depending on the tooth type. The neonatal line, a histological landmark visible in teeth, can be used to determine the timing of growth layers throughout the crown (Nina Sabel et al., 2008). Reprinted with permission (Morishita & Arora, 2017).