Penetration ability of different irrigants into dentinal tubules.
Dentinal tubules of human root canal walls were infected with a known bacterial isolate. The teeth were divided into two groups and the root canals instrumentated. Different types of canal irrigant were used for each group. In group A, 5% NaOCl was followed by a 10% EDTA rinse and neutralized with a final physiological solution rinse. In Group B, 10% EDTA, a tensioactive agent (TRITON), and 5% NaOCl were used in sequence, with a final physiological solution rinse to neutralize the action of the agents used. Histological examination of group A specimens showed a residual area of infection extending from the canal lumen to a mean depth of 300 microns. Histological examination of group B specimens showed an infection-free area of tubules to a mean depth of 130 microns. Below this was an infected area of variable extent. In some group B sections, no infection was found.
Berutti
E
E
Department of Endodontics, School of Dentistry, Turin University, Italy.
Marini
R
R
Angeretti
A
A
D000900:Anti-Bacterial Agents / Q000494:pharmacology*; D003804:Dentin / Q000187:drug effects* / Q000382:microbiology / Q000648:ultrastructure; D013293:Enterococcus faecalis / Q000187:drug effects; D006801:Humans; D066298:In Vitro Techniques; D012388:Root Canal Irrigants / Q000494:pharmacology*; D012390:Root Canal Therapy / Q000295:instrumentation; D013696:Temperature; D013997:Time Factors
D000900:Anti-Bacterial Agents; D012388:Root Canal Irrigants