Which mandibular primary tooth erupts last?

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Multiple Choice

Which mandibular primary tooth erupts last?

Eruption timing in the deciduous dentition follows a clear sequence, with the last to emerge in the mandible being the second molar. In the lower arch, the pattern is central incisor first, then lateral incisor, followed by the first molar, then the canine, and finally the second molar. The typical ages illustrate this: lower central incisors appear around 6–10 months, lateral incisors around 7–12 months, first molars around 12–16 months, canines around 16–20 months, and second molars around 20–30 months. The second molar is delayed relative to the others due to the later development and eruption pathway of the posterior primary teeth, making it the last to erupt in the mandible.

Eruption timing in the deciduous dentition follows a clear sequence, with the last to emerge in the mandible being the second molar. In the lower arch, the pattern is central incisor first, then lateral incisor, followed by the first molar, then the canine, and finally the second molar. The typical ages illustrate this: lower central incisors appear around 6–10 months, lateral incisors around 7–12 months, first molars around 12–16 months, canines around 16–20 months, and second molars around 20–30 months. The second molar is delayed relative to the others due to the later development and eruption pathway of the posterior primary teeth, making it the last to erupt in the mandible.

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