Patient presents with rapidly progressive root caries on many teeth. Which of the following  laboratory results would be a possible indicator of this?
A. Stimulated salivary secretion rate of 1.5ml/min
B. S. mutans concentration of 105 organism/ml
C. A plaque sample containing 5% S. mutans
D. A lactobacilli concentration of 105 organism/ml
E. Salivary buffering PH 5.5
> 100000 CFU/ml high caries incidence

1 Answer

Answer :

E. Salivary buffering PH 5.5

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