Development of central incisor occurs at .... Month?

Appeared in: ESIC Nursing Officer 2016 (Shift -2)

Explanation

The question asks for the typical age of 'development' (eruption) of the central incisor.
The first teeth to erupt in an infant are the mandibular (lower) central incisors.
According to pediatric developmental milestones, this eruption process typically begins around 6 months of age.
This makes 6 months the most accurate answer among the given choices for the start of central incisor development.

Option A: 5 months is at the very early end of the normal range for tooth eruption and is not the average starting time.
Option C: 8 months is the typical age for the eruption of the maxillary (upper) central incisors, not the first central incisors (which are mandibular).
Option D: 10 months is at the later end of the eruption range for the first incisors and is more commonly associated with the eruption of lateral incisors.

Visual 1: Diagram - A chart showing the full sequence and age ranges for the eruption of all 20 primary (deciduous) teeth. This helps visualize the entire process, not just the first tooth.
Visual 2: Illustration - An image of an infant's lower gum line showing the emerging mandibular central incisors to clearly identify the first teeth that erupt.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Infant developmental milestones: Primary tooth eruption as background academic context rather than a clinical decision trigger.
Monitoring tooth eruption is a key part of routine well-baby checkups, as it is an important indicator of physical development.
Nurses play a crucial role in educating parents about the signs of teething (e.g., irritability, drooling, gum swelling) and providing guidance on comfort measures (e.g., teething rings, gentle gum massage).
Delayed eruption (no teeth by 13-15 months) can be a red flag for nutritional deficiencies or underlying endocrine or genetic conditions, warranting further investigation.

How to Approach the Question

Identify the keywords in the question: 'Development', 'central incisor', and 'month'.
Recognize that in the context of infant milestones, 'development' of a tooth refers to its eruption through the gum.
Recall the standard timeline for primary dentition. The first teeth are the lower central incisors.
Remember the average age for the eruption of the first tooth is around 6 months.
Compare this knowledge with the given options (5, 6, 8, 10) to select the most accurate and commonly accepted milestone age.

Concept Tested & Keywords

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Practise the full ESIC Nursing Officer 2016 (Shift -2)

Attempt every question from this paper in a timed mock, then review the full solution for each one.