In monitoring mixed dentition, which indicator is most predictive of future malocclusion risk?

• A. Tooth shade
• B. Gingival recession
• C. Root canal depth
• D. Eruption timing

Answer: (D)

Eruption timing directly influences how the teeth will fit in the growing arch. In mixed dentition, knowing when permanent teeth are expected to erupt helps predict space availability and the likelihood of crowding, tipping, or ectopic eruption later on. If eruption occurs too early or too late relative to the developing jaws and available space, it can set a trajectory toward malocclusion, guiding clinicians toward early interceptive measures. The other factors—tooth shade, gingival recession, and root canal depth—don’t relate to how teeth will align or move into the arch as growth occurs, so they’re not useful predictors of future malocclusion risk.