Practice Quiz

INBDE Integrated National Board Dental Exam Prep Set 2

Category - NBDE II

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Root resorption can be:
  1. External and internal
  2. External and within
  3. Internal and expanded
  4. External and expanded
Explanation
Answer: A - Root resorption can be external and internal. External root resorption is the loss of tooth structure on the root adjacent to the periodontal ligament. External root resorption is caused from trauma, orthodontic therapy, occlusal forces, and cysts or tumors. Internal root resorption is the loss of tooth from within the dental pulp and is caused by trauma or penetration of the pulp by caries.
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