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Saturday, June 21, 2008

Dental Microbiology MCQ 02

Saturday, June 21, 2008

Which of the following are true regarding host defense response to the threat of microbial invasion from the root canal?


  1. The plasma cells are the front line fighting force against bacteria.

  2. The T-lymphocytes, B-lymphocytes and natural killer cells are primary cells of importance in chronic inflammation and immunity

  3. Plasma cells are the only cells that can manufacture and secrete antibodies

  4. PMNs have a life of 8-10 days and die in great numbers at acute inflammatory sites

  5. The accumulation and local death of neutrophils is a major cause for tissue breakdown in chronic phases of apical periodontitis


  1. 1 only is correct

  2. 2 only is correct

  3. 3 only is correct

  4. 2, 4, and 5 are correct

  5. All of the above are correct

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