Something I've wondered about recently that seems like it should have a straightforward answer... Are their benefits / costs to using soap for dental cleaning? I tried googling for information, but mostly found alternative medicine people wondering, and one person referencing something written in the 1850s, but nothing from the past century that says "soap cleans teeth better" or "soap will kill enammal [sic]" or "soap has no better or worse effects than toothpaste on oral health". Is there data somewhere I haven't found? Is the answer one of those common knowledge things that is so common people forget to mention it to new humans?