Endocarditis from a drop of blood?

[Wendel]

I am studying endocarditis. There are studies and countries where antibiotic prophylaxis is no longer recommended before dental operations. The main advice is: "keep your mouth clean and free of plaque." I want to know if when I am cleaning my teeth and for some reason my gums bleed (without having gingivitis or some other infection) I can get endocarditis, or maybe if I bite my tongue while eating, or if I get a splinter in my gum. It is a very controversial topic.