Dental hygienist Bernadette Gable was angered Tuesday by patient Richard Tepfer's failure to floss regularly. 'Just look at all this plaque build-up,' said Gable, scolding Tepfer during his annual teeth-cleaning. 'I explicitly told you last time you were here to floss at least once a day. Why would you just ignore my instructions?' The outraged Gable then pointed toward a poster of a grotesque, bloody mouth ravaged by gum disease, asking Tepfer if he wanted to look like that someday. 