It’s probably worth noting that genetics is probably a significantly big factor than affects cavities, similar to lots of other stuff. Some folks can eat sugar foods and not brush twice a day and have no issues, while others who even floss daily end up with bad teeth.
Not saying you shouldn’t reduce sugar intake, that’s not my point - but - factors like genetics are very important too, and fluoride might help for such people.
So this may be useful to someone - I lost that genetic lottery and had lots of issues / most teeth patched up / painful cleans. Until recently, when I moved to a new dentist who said "oh, you've got lots of calcium buildup, you should be taking vit D+K2". This sorted out most of my issues almost immediately. I wish someone told me that 30 years ago...
So apparently there's a few things that trivially impact your dental health besides usual cleaning and few people seem to know about them.
Novamin is another “dental secret”. US toothpaste doesn’t have it, but studies consistently show it’s more effective than just fluoridated toothpaste and protecting teeth from decay.
You would think that in a “capitalist, free-market” such as the United States, an innovation with a clear and pronounced benefit over the status quo would take the marketplace by storm and quickly become the new status quo.
Last I checked, you can get Sensodyne with Novamin toothpaste on Amazon, but it does come from Canada.
"Review shows that Novamin has significantly less clinical evidence to prove its effectiveness as a remineralization agent in treating both carious and non-carious lesion. Hence, better designed clinical trials should be carried out in the future before definitive recommendations can be made."
Not saying you shouldn’t reduce sugar intake, that’s not my point - but - factors like genetics are very important too, and fluoride might help for such people.