The spool method is suited for those with manual dexterity. Take an 18-inch piece of floss and wind the bulk of the floss lightly around the middle finger. (Don’t cut off your finger’s circulation!) Wind the rest of the floss similarly around the same finger of the opposite hand. This finger takes up the floss as it becomes soiled or frayed. Maneuver the floss between teeth with your index fingers and thumbs. Don’t pull it down hard against your gums or you will hurt them. Don’t rub it side to side as if you’re shining shoes. Bring the floss up and down several times forming a “C” shape around the tooth being sure to go below the gum line.

The loop method is suited for children or adults with less nimble hands, poor muscular coordination or arthritis. Take an 18-inch piece of floss and make it into a circle. Tie it securely with three knots. Place all of the fingers, except the thumb, within the loop. Use your index fingers to guide the floss through the lower teeth, and use your thumbs to guide the floss through the upper teeth, going below the gumline forming a “C” on the side of the tooth.