INBDE (Integrated National Board Dental Examination) Practice Exam

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Which of the following is an example of endochondral bone formation?

  1. cranial vault

  2. maxilla

  3. mandible and most bones in body

  4. teeth

The correct answer is: mandible and most bones in body

Endochondral bone formation is the process where bones are formed by the replacement of hyaline cartilage models. The mandible and most bones in the body are examples of bones formed through endochondral ossification. This process involves the initial formation of a cartilage model, which is then gradually replaced by bone during development. On the other hand, the cranial vault and maxilla are examples of bones that are primarily formed through intramembranous ossification, where the bone tissue is formed directly without a cartilage model. Teeth are not examples of bones formed through either endochondral or intramembranous ossification. Teeth are formed through a different process called odontogenesis, which involves the interaction of oral epithelium and neural crest-derived ectomesenchyme.

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