All of the following causes excessive bleeding during tooth extraction except _______________?
Correct answer: C. Anti thrombin - III deficiency
- A. Haemophilia - A
- B. Haemophilia - B
- C. Anti thrombin - III deficiency
- D. Von-willebrand disease
Explanation
Haemophilia A, haemophilia B and von Willebrand disease can cause prolonged bleeding after dental extraction because clot formation is impaired. Antithrombin III deficiency instead promotes venous thrombosis by reducing natural anticoagulant activity.
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