I started drinking coffee regularly a few weeks ago (that is, pretty much every morning when I’m home, though I’ve never actually brought myself to purchase a cup when away from home), primarily for medicinal reasons. I still don’t like the stuff that much, and can take or leave it. But one side effect I discovered, as a result of my latest dental visit, is that my teeth are much cleaner. I noticed that my cleaning was much faster than usual, and my hygienist told me that there was less to clean. I attribute this to the fact that I am brushing twice as often as I used to, because I feel a need to do so after drinking the coffee in the morning (I generally skip breakfast otherwise), partly to get rid of the after taste, and partly to prevent teeth staining. I was particularly motivated about the latter after seeing how hard it is to clean coffee stains from our white porcelain cups.