Initiation of caries by streptococcus mutans is by the production of______________?
Correct answer: B. Insoluble dextan and glucosyl transferase
- A. Dextranase and soluble dextran
- B. Insoluble dextan and glucosyl transferase
- C. soluble dextan and glucosyl transferase
- D. None of the above
Explanation
Streptococcus mutans uses glucosyltransferase to convert sucrose into extracellular insoluble glucans, traditionally called insoluble dextran, which promote firm plaque attachment. Soluble glucans do not provide the same adhesive matrix.
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