FULL TITLE: One THIRD of millennials only brush their teeth once a day - and most Americans would rather go without sex for a month than see a dentist, study reveals One third of millennials only brush their teeth once a day, according to a new study. Even in adulthood, the research revealed that Americans can be neglectful of their oral hygiene, with 62 percent reporting that they were too scared to go to the dentist. Skipping the ritual sounds harmless enough, but going without brushing and flossing has been linked to health risks ranging from gum disease to dementia...