1. Cut a piece of floss about 50 cm in length and wrap most of one of your middle fingers.
2. Wrap the remaining floss around the same finger of the other hand.
3. Hold the floss tightly between the indices and thumbs of each hand, leaving a length of yarn about 5 centimeters between the two hands. With soft movements pass the thread between your teeth. The thread must not be jerky.
4. When the thread reaches the free end of the gums, give a shape like the letter C, while abutting on the tooth surface.

5. Hold the yarn into contact with the tooth. Rub gently on the tooth surface, while removing the thread from the teeth. If you interdental cleaning for the first time, your gums may bleed for about five days. If bleeding continues, see your dentist.
6. Continue to clean the thread all the teeth, especially the back teeth.