They had a low-fear population, where they basically gave them a 13-minute presentation, all based in science, but told them that, if you didn't brush and floss your teeth, but you'll get dentures, and it won't be that bad.
低恐怖組には13分の 科学に基づいた プレゼンをし、 歯磨きとフロスをしないと 歯周病にかかると言い聞かせました。歯周病になると、歯が抜け だが入れ歯を使えば、そう悪くはないだろうと。