N=1, but I didn’t floss regularly for years, but I found that after I did so it made an enormous difference in my bad breath, to the point of eliminating it entirely for most purposes. Obvious conclusion is that my breath problems were the result of bacterial buildup between my teeth that wasn’t getting removed by normal brushing.
I suspect that a lot of tooth-brushing advice is like this: maybe not rigorously studied, but nonetheless upheld by anecdote and obvious physical models of the world.
N=1, but I didn’t floss regularly for years, but I found that after I did so it made an enormous difference in my bad breath, to the point of eliminating it entirely for most purposes. Obvious conclusion is that my breath problems were the result of bacterial buildup between my teeth that wasn’t getting removed by normal brushing.
I suspect that a lot of tooth-brushing advice is like this: maybe not rigorously studied, but nonetheless upheld by anecdote and obvious physical models of the world.