Evaluation of Plaque Removal Efficacy and Patient Acceptability of Knotted Floss Technique in Type I Gingival Embrasures

Inclusion Criteria: * have one type I gingival embrasure in the premolar first molar area. * full mouth Plaque Index score ≥1.8 (Silness and Loe 1964) * full mouth Gingival Index ≥ 1.0 (Loe and Silness 1963) * good general health, * have all teeth present in quadrant being tested and opposing quadrant * be available for a 14 week study period, * be ready to abide with the study criteria, * minimum education of grade 12 Exclusion Criteria: * have used in previous 2months oral hygiene aids other than tooth-brushing like dental flossing, mouthwashes and water jet irrigating systems * habit of unilateral mastication for ≥2 months, * medical history of diabetes mellitus, hepatitis, pregnancy or requiring any antibiotic prophylaxis, * having drug history in preceding two months of use of antibiotics, hormonal supplements, steroids, non steroidal anti-inflammatory medications, oral contraceptives or any drug that influence gingival tissue, * taking part in any other clinical or drug trial including taking part in other study groups related to the evaluation of knotted floss technique, * having physical handicap limiting the ability for oral hygiene and effective use of dental floss, * had orthodontic treatment * having gross dental caries * having advanced periodontitis (more than one pocket ≥ 6mm), * had active periodontal treatment like scaling, root planing, curettage, periodontal surgery in the previous 8weeks, * had any adverse oral habit like smoking, tobacco chewing or hab…