What are the two types of occlusal trauma?
  1. Primary and secondary
  2. Inclusion and post
  3. Pre-set and post-set
  4. Fibrosis and ankylosis
Explanation
Answer: A - The two types of occlusal trauma are primary and secondary. Primary trauma is excessive force applied with normal supporting structures - no trauma to gingival areas. Secondary trauma refers to excessive force applied with inadequate support - trauma to gingival areas.
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