Study of Ultrasonic Scaling in Combination with

Povidone-iodine Solution (Part 2)

Abstract

The effects of ultrasonic scaling in combination with povidone-iodine solution were examined bacteriologically.
The results obtained were as follows:
1. In phase contrast microscopy, both total bacterial count and spirochetal and motile rod incidence decreased rapidly 3 days after instrumentation, thereafter remaining at about the same level in each group. Both total bacteria and spirochetal and motile rod incidence decreased after ultrasonic scaling in combination with povidone-iodine solution in comparison with ultrasonic scaling alone and root planing.
2. Total bacterial count and proportional distribution of black-pigmented Bacteroides in periodontal pockets decreased weekly after instrumentation in each group. Total bacterial count and proportionaldistribution of black-pigmented Bacteroides decreased after ultrasonic scaling in combination with povidoneiodine solution in comparison with ultrasonic scaling alone and root planing.