At approximately what age is complete primary dentition reached?

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Multiple Choice

At approximately what age is complete primary dentition reached?

Complete primary dentition is reached when all 20 deciduous teeth have erupted. This typically happens by about two and a half years of age, since the eruption sequence progresses from the lower central incisors around 6–10 months and continues through the canines and second molars, which usually erupt by roughly 23–33 months. That means most children have a full set by about 30 months (2 1/2 years). The other ages don’t align with the usual eruption timeline: one year is generally too early for all 20 teeth to be present; three to four years is later than average for full eruption; five years is well past the time when the full primary dentition has emerged.

Complete primary dentition is reached when all 20 deciduous teeth have erupted. This typically happens by about two and a half years of age, since the eruption sequence progresses from the lower central incisors around 6–10 months and continues through the canines and second molars, which usually erupt by roughly 23–33 months. That means most children have a full set by about 30 months (2 1/2 years).

The other ages don’t align with the usual eruption timeline: one year is generally too early for all 20 teeth to be present; three to four years is later than average for full eruption; five years is well past the time when the full primary dentition has emerged.

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