What did vikings use for toothpaste?

Answer 1

Dental hygiene was not as important as it is today. People would clean their teeth with toothpicks, twig ends chewed into fibers or floss with bit of thread or sinew if food was stuck between their teeth. Not that there wasn't some dental experimentation going on, but it mostly dealt with extractions. One skull was found in England from about the right time line to be associate with Vikings with an iron false tooth driven into the jawbone like a nail.