Best Toothpaste

The smart order is to clear the safety questions first, then make sure whatever you pick actually prevents cavities. Work through these in sequence, because a tube can be spotless on metals and still leave your teeth unprotected.

1. 1

   Check for independent heavy-metal testing

   Start with what a lab found, not what the box says. Independent testing by Lead Safe Mama found detectable lead in 90% of 51 toothpastes (tamararubin.com, 2025), so [heavy metals] are common rather than rare. The strongest signal is a brand that publishes its own third-party metals results, or a product an outside lab reported as non-detect for lead, arsenic, mercury, and cadmium. A tube nobody has tested is unknown, not proven safe. A tube tested high, like Crest Cavity Protection Regular at roughly 399 ppb lead, is the one to skip.

2. 2

   Decide fluoride or hydroxyapatite for cavity protection

   This is the decision that actually protects your teeth. To prevent cavities a paste needs one of two proven actives: fluoride, which the FDA recognizes as an anticavity ingredient, or [hydroxyapatite] at 10% or higher. Fluoride has the deepest evidence and is a strength, not a toxin. Hydroxyapatite is a legitimate fluoride-free alternative on a shorter research track. What does not work is a paste with neither, no matter how natural it looks. Pick your lane on purpose, then confirm the active is really in there.

3. 3

   Avoid titanium dioxide, SLS, and plastic additives

   Once safety and cavity protection are settled, scan the ingredient list for three avoidable extras. [Titanium dioxide] is a whitening pigment the EU no longer allows in food, and it adds nothing to cleaning. SLS (sodium lauryl sulfate) is a foaming agent that can trigger canker sores in people prone to them. Microplastics and PEG-type polymers add texture you do not need. None of these are emergencies, but a cleaner formula skips them, and plenty of effective pastes do.

4. 4

   Check the RDA, especially on whitening pastes

   RDA (relative dentin abrasivity) measures how hard a paste scrubs your enamel. Lower is gentler: Sensodyne Pronamel sits at 37, the FDA caps toothpaste at 200, and the ADA Seal allows up to 250. Whitening pastes tend to run high because scrubbing is how they brighten, so if you use one daily, favor one with a published, moderate RDA. Most brands do not print the number, which is normal, but a low stated RDA is a real plus for sensitive teeth or receding gums.

5. 5

   Match the paste to your actual need

   Now fit the tube to your mouth. For sensitive teeth, a gentle fluoride paste with a low RDA like Sensodyne Pronamel Mint is the easiest call. For gum issues, stannous fluoride (in Colgate Total Active Prevention) is built for gingivitis. If you want fluoride-free but still protected, a disclosed 10% hydroxyapatite like RiseWell does the job. The clean salt and organic pastes are fine for breath and feel, just pair them with another cavity-protective step, because on their own they do not prevent decay.

6. 6

   Treat a recall or high-metal result as a dealbreaker

   Most of the field clears on basic safety, so use the rare red flags to sort the bottom. An active recall or an independent lab result showing elevated heavy metals is the clearest reason to put a tube down, regardless of how well its active works. Crest Cavity Protection Regular is the example here: its fluoride genuinely protects, but Lead Safe Mama reported lead, arsenic, and mercury in that paste, and a daily-swished product is exactly where you do not want avoidable metals.