Where do permanent incisors and canines tend to develop?

• A. In their own bony crypt on the lingual side of baby teeth
• B. Between the divergent roots of baby teeth
• C. In front of baby teeth crowns
• D. On the buccal aspect of baby teeth

Answer: (A)

Permanent incisors and canines begin development inside the jawbone, each in its own dental crypt, on the lingual (tongue-side) of the deciduous teeth. This separate lingual location gives room for the future successors and aligns with their eruption after the primary teeth roots resorb. Other locations don’t reflect where the tooth buds actually form: developing between the divergent roots of baby teeth wouldn’t be the initial site for their development, forming in front of baby teeth crowns would place them ahead of the deciduous crowns, and developing on the buccal (cheek) side is on the opposite side of where these teeth actually form.