Is one allowed to brush teeth on Yom Kippur with toothpaste on a toothbrush without rinsing toothbrush before and without rinsing mouth after? What if its prescription which I would think probably makes it more dangerous to swallow? (Also would there be a difference between flavors sweet vs mint?)
On kashrut.org which is based on Rabbi Abadi it's allowed but everywhere else they say it's not/not recommended. Does anyone know of any Ashkenazic sources/poskim that allow it?