Dental and Oral Tissue Trauma · CDA

If an avulsed tooth has been out of the mouth for more than 60 minutes and has been stored dry, what is the most likely prognosis even after replantation?

  1. Excellent — same as immediate replantation
  2. Good — with no treatment needed
  3. Poor — high risk of root resorption, ankylosis or tooth loss
  4. Guaranteed survival if splinted
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Correct answer: Poor — high risk of root resorption, ankylosis or tooth loss

Extended dry time results in death of periodontal ligament cells; even with replantation, heavy risk of root resorption, ankylosis and eventual tooth loss remains.

Difficulty: Medium Question 13 of 19

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