The most common organism causing infective endocarditis following dental manipulation is a:

 # The most common organism causing infective endocarditis following dental manipulation is a:

A. Streptococcus viridans

B. Staphylococcus aureus

C. Group A Streptococci

D. Gram –ve rod

The correct answer is A. Streptococcus viridans.

Bacteremias have been shown to cause Infective endocarditis; viridans group streptococci are part of the normal oral flora and have been commonly found in Infective endocarditis; dental procedures can cause bacteremias because of Streptococcus viridans; a large number of case reports associate dental procedures with subsequent Infective endocarditis.

Reference: Contemporary Oral and Maxillofacial Surgery, James R. Hupp, 6th Edition 2013, Page No: 314

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