This disclosure proposes a technique for finding and treating areas of tooth decay primarily below the gum line using protuberances provided in a length of modified dental floss. The length of modified dental floss is provided with protuberances which can be used to detect areas of tooth decay by the roughness and sensitivity felt as the length of modified dental floss glides over the area of tooth decay. Specially designed posts are used to anchor the ends of the length of modified dental floss in order to be able to apply greater force during flossing, and free up fingers that would normally have the dental floss wrapped around them, to guide the floss to the right locations for flossing.
