Step 1:
Wrap the floss around the middle fingers. The floss should be approximately an arm's length or 60 cm long.
Step 2:
For the upper teeth use the index finger and the thumb to guide the floss. The thumb should be on the outside surface of the teeth.
Step 3:
Use the two index fingers for flossing the lower teeth. NOTE: The fingers guiding the floss should not be more than 2.5 cm apart.
Step 4:
Gently insert floss between the teeth by moving back and forth. Do not force the floss between the teeth or press down so hard as to cause bleeding.
Step 5:
Gently curve the floss into a C - shape moving the floss up and down two or three times. Move the floss over to the side of the neighboring tooth and repeat.
Note:
When the working portion of the floss becomes soiled or begins to shred, advance the floss from one middle finger to the other, so that a new section of the floss is in position.