Happy day to all! A little premise about oral hygiene in ancient time: our ancestors used to clean their teeth with powders made of natural ingredients such ashes of ox hooves, myrrh, powdered and burnt eggshells, pumice. Crushed bones and oyster shells were also added as abrasive, as we know today thanks to numerous archaeological finds. Nowadays commercial toothpaste contain controversial ingredients that many studies have proven as not beneficial at all for us, despite assumed in small quantity. Among these ingredients we find fluoride, artificial sweeteners and colors,…