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*Corresponding Author: Dr Abhinav Diwan, MDS, Professor, Department of Conservative Dentistry and Endodontics, Sri Rajiv Gandhi College of Dental sciences, Cholanagal, Hebbal, R.T. Nagar post, Bangalore-32. E-mail: drabhinavdiwan@yahoo.co.in
This study compared the effectiveness of photoactivated disinfection (PAD), conventional irrigation with 2.5% Sodium hypochlorite (NaOCl) & their combined treatment in elimination of Enterococcus feacalis in curved canals.
Forty single rooted extracted human teeth with curved canals were prepared with Protaper files, sterilized, inoculated with an E.feacalis suspension & incubated for 48 hrs. All the teeth were randomly divided into 5 different treatment groups. Group 1; 2.5% NaOCl, Group 2; PAD, Group 3; NaOCl + PAD, Group 4; positive control, Group 5; negative control. Bacterial reduction was measured by counting the Colony Forming Units (CFU's).
There was a significant reduction in the bacterial population after all treatments (P=0). NaOCl irrigation followed by PAD was significantly more effective than 2.5%NaOCl and PAD alone. PAD had better antibacterial effect than 2.5% of NaOCL.
PAD can be undertaken as a part of routine disinfection of curved root canal system. It also has a potential for eradicating persistent endodontic infections.
Colony Forming Units (CFU's), Curved canals, Enterococcus feacalis, Photoactivated disinfection (PAD), Sodium hypochlorite
