Neonatal lines are present in all of the following structures except which one?

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Enamel of primary incisorsEnamel of permanent caninesEnamel and dentin of the permanent first molarsDentin of permanent mandibular incisorsEnamel of primary molars

Explanation

Neonatal lines appear in the enamel of primary incisors, the enamel and dentin of permanent first molars, and the dentin of permanent mandibular incisors. However, they are not found in the enamel of permanent canines.