## **Core Concept**
The eruption of teeth, particularly the sequence and timing, is crucial in pediatric dentistry and oral health. The maxillary lateral incisors are among the primary teeth that erupt in a specific sequence. Understanding the typical timeline for tooth eruption helps in monitoring dental development and identifying potential issues early.

## **Why the Correct Answer is Right**
The correct timeline for the eruption of the maxillary lateral incisors is between 9 to 13 months of age. This period can slightly vary, but generally, it is accepted that maxillary lateral incisors erupt after the central incisors, which typically start coming in around 8-12 months of age. This sequence is important for dental development and occlusion.

## **Why Each Wrong Option is Incorrect**
- **Option A:** This option suggests an eruption time that is too early for maxillary lateral incisors, as primary central incisors usually start erupting around 8-12 months.
- **Option B:** This option is incorrect because it suggests a range that is more aligned with the eruption of central incisors rather than lateral incisors.
- **Option D:** This option suggests a much later eruption time than what is typically observed for primary maxillary lateral incisors.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that the sequence of tooth eruption can be an indicator of overall health and developmental progress in children. Typically, the lower central incisors are the first to erupt, followed by the upper central incisors, then the upper lateral incisors. Significant deviations from this timeline may warrant further investigation.

## **Correct Answer:** C. 9-13 months.