An educational video from Univ. of Nottingham, if you don't know how nasty (and fun) Fluorine is: [this video] (and they explain the tooth enamel theory towards the end as well).
Shows how nasty and fun fluorine is, plus tooth enamel.
Every time I hear anything about Flourine, I’m reminded of “Sand Won’t Save You This Time” [link] I also suggest watching the Periodic Table of Videos episode on Flourine: [this video]
This is a good little interesting video on fluorine here (previously linked by someone else), and the ending is the best description of tin fluoride for teeth I've ever seen -- well worth the ~6min [this video] (edit: added link)
Interesting fluorine video with a great explanation of tin fluoride for teeth.
Just out of interest, and not detracting from what you're saying, but normal fluoride also forms a compound (flouro-apetite) more resistant to avoid than normal tooth material (appetite). At least according to this chemist: [this video] (tooth chat at 5:10, but the whole video is interesting)
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