Which one of the following antibiotics causes permanent discoloration of teeth in young children if it is misused?
Correct answer: D. Tetracycline
- A. Penicillin
- B. Streptomycin
- C. Sulfonamide
- D. Tetracycline
Explanation
Tetracycline is a short-acting antibiotic that inhibits bacterial growth by inhibiting translation. Intrinsic, permanent tooth discoloration is well known to occur with the use of tetracycline antibiotics if taken during tooth development (ie, the last half of pregnancy, infancy, and in childhood up to eight years of age). Hence, option D is correct.
This question appeared on the UHS MDCAT 2014 paper, which you can sit online with every answer explained.
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