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Mixed Dentition Eruption — NDEB AFK MCQ

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EasyPaediatric DentistryMixed Dentition EruptionNDEB AFK

In the mixed dentition, which permanent tooth erupts first in the mandible?

Educational content. Not a substitute for clinical judgement or local policy.

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Correct answer: D — First molar

The mandibular first permanent molar is typically the first permanent tooth to erupt in the mandible (and overall), usually at age 6-7 years. It erupts distal to the second primary molar. In some individuals, the mandibular central incisor erupts simultaneously or slightly before. The eruption sequence in the mandible is typically: first molar → central incisor → lateral incisor → canine → first premolar → second premolar → second molar.

Reference: Proffit – Contemporary Orthodontics, 6th ed., 2019