Who adds it, how much, what the evidence says, what critics argue, and where in Australia it isn't added at all.
It has more than three times the fluoride of regular toothpaste and is sold pharmacist-only. Here's what that means, and the precautions on the label.
A daily fluoride rinse has about 220 ppm fluoride and isn't for children 6 and under. Here's how it compares with toothpaste and water.
Dental varnish is the most concentrated fluoride most people will ever meet: 22,600 ppm. Here's what Australian guidelines say about it.
The dose makes the poison. Here's what's established, what's disputed and what's still open, from teeth and bones to thyroid and IQ, with the numbers.
At high doses, the evidence is fairly strong. At Australian water levels, studies disagree. Here is every major study, with its numbers and its weaknesses.
Boiling leaves fluoride behind and slightly concentrates it. Only a few methods actually take it out.
Tea plants pull fluoride from the soil. A typical cup of black tea carries around three times the fluoride of fluoridated water.
Home test strips are often wrong. Here's what works: your utility's reports, a NATA-accredited lab, and what the numbers mean.
Reverse osmosis, distillers, activated alumina, jugs and shower filters compared. Plus the certifications to look for.
What hydroxyapatite is, what the clinical trials found, how it's regulated here, and which brands you can buy in Australia.
Most still bottled water has very little. But Australian rules allow fluoride to be added, and here's how to tell.
About 1 in 6 Australian children has some fluorosis. Here's what causes it, how severe it gets, and how to reduce the risk.
Australian guidelines stopped recommending fluoride tablets and drops in 2006. Here's why, and what's advised instead.
It comes from fertiliser manufacturing, can carry trace arsenic and lead, and must meet strict purity standards. Here's how it works.
The chemicals used, where they come from, how much goes in, and which home filters actually remove it.