In subadult age estimation using dental eruption, which method is employed?

• A. By measuring crown enamel thickness
• B. By comparing observed eruption stages to standardized dental development charts
• C. By analyzing tooth coloration
• D. By assessing root resorption of deciduous teeth

Answer: (B)

In subadult age estimation based on dental eruption, the key approach is to use the visible stage of eruption and compare it to standardized charts that map eruption timing to age. Teeth erupt in a relatively predictable sequence, and charts summarize the typical ages at which each tooth erupts. By examining which permanent teeth have emerged (and how far they’ve progressed) you can align that pattern with the chart to estimate the individual's age. This method is useful because eruption is a concrete, observable milestone that is captured in dental exams and radiographs, and the charts provide population-based age ranges for those stages.

Enamel thickness, tooth color, and root resorption of deciduous teeth aren’t reliable age signals. Enamel thickness isn’t tied to a specific age, coloration can be affected by staining and lighting, and deciduous root resorption occurs as part of normal shedding but doesn’t yield precise age information.