The current document is directed to a dental-hygiene tool to facilitate flossing of teeth, particularly for orthodontics patients wearing braces or other orthodontic devices, fixtures, and appliances that hinder use of standard dental floss. The currently disclosed dental-hygiene tool includes a hook-shaped tip to which a length of dental floss is attached. The hook-shaped tip has a blunt tip to prevent gum injuries during use and is sufficiently rigid to facilitate navigation through orthodontics fixtures and appliances, including braces.