Subject compliance A compliance diary will also be given to each subject at the baseline appointment of each treatment phase and will be collected at the end of each phase by third investigator. The subjects will be instructed to record each flossing experience in this diary and any other event he/she felt significant. Compliance will further be established by dispensing a specific amount (90 pieces) of assigned floss product per treatment phase. At the conclusion of each treatment phase, the subjects will return to principal or third investigator, any unused portion of floss product and thus non-compliance will be estimated. Additionally, the patient satisfaction questionnaire will substantiate subject compliance. This questionnaire will be answered by every subject at the end of the second and final phase.