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Snyder's test tell us the:

 # Snyder's test tell us the: (AIPG-96)
a) Exact nature of microorganisms
b) Combined acidogenic nature of microorganisms
c) Enamel dissolving capacity of saliva
d) All of the above

The correct answer is B. Combined acidogenic nature of microorganisms

Snyder test measures the ability of the salivary microorganisms to form organic acids from a carbohydrate medium. In this test the glucose agar medium contains an indicator dye "Bromocresol green" which changes color from green to yellow in the range of PH 5.4 to 3.8

 

Colour observations in snyder test:- 

24 hrs48 hrs72 hrs

If yellow

marked caries susceptibility

If yellow 

definate caries susceptibility

If yellow 

limited caries susceptibility

If green

continue to incubate and observe at 48 hrs

If green

continue to incubate and observe at 72 hrs

If green

caries inactive





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