INBDE (Integrated National Board Dental Examination) Practice Exam

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Tertiary dentin is created by which of the following?

  1. Primary odontoblasts

  2. Secondary odontoblasts

  3. Tertiary odontoblasts

  4. Quaternary odontoblasts

The correct answer is: Secondary odontoblasts

Tertiary dentin is created in response to dental injury or disease, and is formed by secondary odontoblasts. Primary odontoblasts create the initial layer of dentin during tooth development, while tertiary odontoblasts form after tertiary dentin and play a role in repairing injured dentin. Quaternary odontoblasts are not a recognized cell type, as there are only three known types of odontoblasts.