The phrase "do 10 out of 10 dentists recommend Colgate?" has been used in advertising for Colgate toothpaste for many years. It is a rhetorical question that implies that the vast majority of dentists recommend Colgate, and therefore it must be a good toothpaste.
There is no scientific evidence to support the claim that 10 out of 10 dentists recommend Colgate, but the phrase has become a well-known and trusted slogan. Colgate is a popular toothpaste brand, and it is likely that many dentists do recommend it to their patients. Colgate toothpaste contains fluoride, which is an important ingredient for preventing tooth decay. It also contains other ingredients that can help to whiten teeth and freshen breath.