A Study of Ultrasonic Scaling in Combination with Povidone-iodine Solution: Part 6. Trials at Scaling Intervals

The clinical and microbial effects of ultrasonic scaling in combination with povidone-iodine solution were examined in patients using the following two ultrasonic scaling systems in combination with povidone-iodine solution and root planing. Three different sites, one in each quadrant, were randomly selected in each of the 10 periodontal patients participating in this study. Each patient received the following treatment: ultrasonic scaling in combination with povidone-iodine solution performed twice, one week apart at one site (Group A), twice, two weeks apart at another site (Group B), and root planing alone at the third site (Group C). The three groups (Groups A, B and C) showed similar improvement throughout the observation periods, both clinically and bacteriologically (phase contrast microscopically). Therefore, ultrasonic scaling in combination with povidone-iodine solution need not be perform ed at regular one-week intervals.