They are clear soft plastic and you only leave them on for 1-4 minutes (at least those are the instructions for Butler "Protect"). Protect is prescription only, so I get mine from my dentist.
It is a foam type of product in a container with a pump. I just place a little of the foam in the tray and slip it on the teeth. You should store the trays on the mold to prevent them from distorting. I have heard that there are OTC (over the counter)flouride treatment products also -I have no personal experience with them. Protect is about as brainless and painless as it gets and doesn't leave a bad aftertaste.


Gary Allsebrook
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Dx 11/22/02, SCC, 6 x 3 cm Polypoid tumor, rt tonsil, Stage III/IVA, T3N0M0 G1/2
Tx 1/28/03 - 3/19/03, Cisplatin ct x2, IMRT, bilateral, with boost, x35(69.96Gy)
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"You are a mist that appears for a little while and then vanishes" (James 4:14 NIV)