The percent of acidulated phosphofluoride (APF) used as a topical fluoride treatment is ____________
a. 2
b. 1.23
c. 10
d. It does not matter what percent is used
b
RATIONALE: The percent of acidulated phosphofluoride (APF) used as a topical fluoride treatment is 1.23 . This type of treatment is preferred as it is not irritating to soft tissues, will not discolor the teeth, and is slightly astringent.
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