. The study protocol was reviewed and approved by the Institutional Review board of Coorg Institute of Dental Sciences. The nature and purpose of the study and the recall protocol was explained to the subjects and a written consent was obtained before commencing the study. The sampling and method of collection of data was similar to previuos study done by same authors [16]. Inclusion Criteria for the study were patients who were diagnosed with either localized or generalized aggressive periodontitis aged between 18-35 years with at least one tooth with probing pocket depth ≥5 mm in each quadrant. Patients with periodontal treatment within the last 6 months, pregnancy, smoking, allergy to the dyes, systemic diseases, use of mouth rinses that could influence the outcome of therapy and ingestion of systemic antibiotics within the last 6 months were excluded from the study.

Background:The background of the following study is to measure the subjective intensity of pain using the verbal rating scale (VRS) during supragingival scaling in relation to mandibular anteriors, with an ultrasonic scaler, with 2 different inserts (Slimline and Focus spray)- split mouth study.Materials and Methods:A total of 30 subjects with a combination of 17 males and 13 females with the chronic generalized gingivitis with a minimum calculus score of 1 (CSSI – Ennever J 1961) who reported to Department of Periodontics, Yenepoya Dental College, Mangalore were chosen for the study. Ultrasonic magnetostrictive scaler unit CAVITRON BOBCAT PRO®– (DENTSPLY) with maximum power setting at 130A and 25kHZ frequency with 2 different inserts i.e., Slim line insert and Focus spray (DENTSPLY) were used for supragingival scaling in the study. A VRS was used to assess the subjective intensity of pain.Results:There was no statistically significant difference in pain perception when the scores were compared using Wilcoxon signed rank test. VRS rating scores with slimline inserts showed a pain intensity of 2 in 43.3%, 1 in 53.3% and 0 in 3.3%, whereas the focus spray insert showed a pain intensity of 1 in 23.3% and 0 in 76.7%. Statistical analysis showed a P = 0.251 and a z - 1.147a.Conclusions:The use of both Slim line insert and Focus spray inserts when used at same settings of the scaling unit, showed no statistical significant difference in the intensity of pain perceived and it showed no correlation between patient acceptance and their pain perception.