Dentinal tubule disinfection with 2% chlorhexidine gel, propolis, morinda citrifolia juice, 2% povidone iodine, and calcium hydroxide

Kandaswamy D, Venkateshbabu N, Gogulnath D, Kindo AJ. Dentinal tubule disinfection with 2% chlorhexidine gel, propolis, morinda citrifolia juice, 2% povidone iodine, and calcium hydroxide. International Endodontic Journal, 43, 419–423, 2010. Aim To investigate the antimicrobial activity of 2% chlorhexidine gel, propolis, Morinda citrifolia juice (MCJ), 2% povidone Iodine (POV‐I), and calcium hydroxide on Enterococcus faecalis‐infected root canal dentine at two different depths (200 μm and 400 μm) and three time intervals (day 1, 3 & 5). Methodology One hundred and eighty extracted human teeth were infected for 21 days with E. faecalis. Samples were divided into six groups. Group I (Saline) (Negative control), Group II (Propolis), Group III (MCJ), Group IV (2% Povidone Iodine), Group V (2% Chlorhexidine Gel), Group VI (Calcium hydroxide). At the end of 1, 3, and 5 days, the remaining vital bacterial population was assessed. Dentine shavings were collected at two depths (200 μm and 400 μm), and total numbers of colony forming units were determined. The values were analysed statistically with one‐way analysis of variance followed by Tukey multiple comparison test. The paired t‐test was used to check for differences in growth at different time intervals within groups and for differences at the two depths (P