Kashrut of Fluoride Paste
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Question
When visiting a dental hygienist, they apply fluoride on the teeth for a few minutes (to strengthen the teeth). The question is whether one should check the kashrut of the fluoride, as almost every time a little is swallowed (even though it is just applied) and it has a taste…
Answer
Shalom Rav
One should not recite a blessing over this.
Since there is no intention to enjoy the taste, nor is there an intention to swallow the remnants of the substance.
Source
Shulchan Aruch, Orach Chaim, Siman 206, Sif 2