Table 1.

Fluoride-free–related salient topics stratified according to the most frequent words, issues, and examples.

Topic	Most frequent words	Issues	Examples
1	Natural, oil, product, vegan, organic, charcoal, people, black, care, kid, family, long, food, deodorant, good, and dentist	Healthy lifestyle	“Chlorine free. Fluoride-free. We believe that a better you start with a better water.” “Fluoride-free health products to support a healthy lifestyle”
2	Tooth, good, dental, low, health, paste, organic, people, Tom, well, aluminum, child, deodorant, cavity, year, and way	Consumption of natural/organic oral care products	“Sprouts has very good vegan lip balm, lotion, deodorant, natural oils, fluoride-free and all natural tooth paste etc.” “Anybody know of a site that does that organic fluoride free toothpaste, aluminum free”
3	Tooth, Tom, decay, oil, state, week, health, Maine, dentist, new, deodorant, oral, low, whitening, cavity, safe, and day	Recommendations for using fluoride-free products/measures	“Fluoride does a body bad. Don‘t drink fluoride. I like to use Tom‘s fluoride-free toothpaste.” “Tom’s of Maine natural fluoride-free baking soda toothpaste with propolis and myrrh”