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23 votes
23 votes
How long is fluoride varnish left in after application

User Dward
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2 Answers

17 votes
17 votes

it is quickly applied and and then it hardens

User Brandon Spilove
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2.5k points
23 votes
23 votes
Answer: It is quickly applied and hardens. Then it is brushed off after 4 to 12 hours.
User Ravyoli
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