I usually use some formulation of Crest or Colgate that advertises as "complete care." My dentist used to push a toothpaste on me that was available by prescription only, super high in fluoride, etc. At $15 a tube, I only tried one tube of it because every neuron in my brain rebelled at paying that much for a small tube of toothpaste. For $15 I can buy a nice pizza, after all, and be happy with the purchase...
In the area of the strange, my father used to use a tooth paste that was actually a powder that came in a can. You dampened your toothbrush, dipped it in the dry powder, and brushed your teeth with that. It was
Dr. Lyon's Tooth Powder, which I don't think is sold anymore. Stranger still was my mother, who brushed her teeth with
salt! It mustn't have worked too well as she wound up with dentures...
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