Primary dentition completes at –
**Core Concept**
The primary dentition is the set of 20 primary teeth that erupt in children, serving as placeholders for the permanent teeth. The completion of primary dentition is an essential milestone in pediatric dentistry and orthodontics.
**Why the Correct Answer is Right**
Primary dentition completion occurs between 2.5 to 3 years of age. This process is marked by the eruption of the second molars, which are the last primary teeth to erupt. The completion of primary dentition is a critical event as it allows for the assessment of dental development and the planning of orthodontic treatment if necessary.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect as it is too early for the completion of primary dentition. The first molars typically erupt between 12 to 16 months of age.
**Option B:** This option is incorrect as it is too late for the completion of primary dentition. The permanent incisors typically erupt between 6 to 7 years of age.
**Option C:** This option is incorrect as it is not a specific age range for the completion of primary dentition.
**Clinical Pearl / High-Yield Fact**
It is essential for pediatricians and dentists to monitor the development of primary dentition to identify any potential developmental abnormalities or delays. Regular dental check-ups can help identify these issues early on and prevent potential complications.
**Correct Answer:** C.