I have a lifetime supply of tooth powder called Dentifice. It works very well on teeth and I’ve no gum problems. I don’t know what’s in it because the rest of the writing is in Urdu. I bought it years ago in a NYC dollar store. I liked it so much, I went back and bought all of it. The store was a one of a kind run by Pakistanis. If it hasn’t killed me yet, I guess it’s alright. I still need to get some teeth fixed because of pre-Dentifice problems. I’m a problematic patient as I have an overbite that does NOT cause problems and I have latex allergy, novacaine allergy, and a hairtrigger gag reflex. IOW, I need to be knocked out for any but very basic care. All you get is dentists who do cosmetic dentistry. They want to do extensive surgery to correct the overbite, trim off resulting “excess” gums and palate, and give me a full set of porcelain implants. Sorry, but everyone even if I had the $250,000 and two-three years to dedicate to my teeth, I don’t want surgeries or movie star teeth only to be buried! They’ll outlast me even if I live to 100! I’ll be happy with a few caps and a bridge.