I bought this on the recommendation from my dentist who suggested I use it once per week in addition to my current dental routine. I find that after using, when I brush my tongue against my teeth, they feel just like they do after I get my teeth cleaned at the dentist's office - that's a good thing! It's kind of messy to use with water getting everywhere and tickles a bit on the inside of my teeth but fun and easy to use with good results.