Beyond the early appearance, when may the hook reappear and disappear?

Beyond the early appearance, when may the hook reappear and disappear?

• A. 12-14
• B. 11-13
• C. 9-10
• D. 14-15

Answer: (B)

Hooks on the upper corner incisors come and go with tooth wear and eruption patterns. After they first appear in early years, there’s a later window where the hook can reappear and then disappear again as the tooth continues to wear and the occlusion changes. That reappearance window is around 11–13 years old. So the best fit among the options is 11–13. The other age ranges don’t match the typical timing of this temporary reappearance.

Hooks on the upper corner incisors come and go with tooth wear and eruption patterns. After they first appear in early years, there’s a later window where the hook can reappear and then disappear again as the tooth continues to wear and the occlusion changes. That reappearance window is around 11–13 years old. So the best fit among the options is 11–13. The other age ranges don’t match the typical timing of this temporary reappearance.