Neonatal lines are seen in
Because of undisturbed and even development of the enamel prior to birth, perikymata are absent in the occlusal. enamel of deciduous teeth, whereas they are present in the postnatal cervical parts.
Enamel of deciduous incisors
Enamel of permanent incisors
Enamel of premolars
Dentin of all teeth, as if is formed first