The enamel surface is etched, or conditioned, by a phosphoric acid (or another type of acid) solution. This solution is left on the tooth for _____
a. 15-30 seconds
b. 1-2 minutes
c. 60 seconds
d. 5 minutes
a
RATIONALE: The enamel surface is etched, or conditioned, by a phosphoric acid (or another type of acid) solution that is applied to a clean tooth with a brush, syringe, or small cotton-tipped applicator.It is very important for the area to be dry and the phosphoric acid to be placed correctly in order for a good bond to occur and for the sealant to last.
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