ABSTRACT
INTRODUCTION: The present investigation evaluated the ability of a new passive sonic irrigation (sonic group) system (EndoActivator) to eliminate cultivable bacteria from root canals in vivo and compared it with that of standard syringe irrigation (control group). METHODS: Data were obtained by using bacteriologic sampling of root canals treated by endodontic residents. Sampling results from 1 session of treatment were then compared with results obtained after intervisit calcium hydroxide disinfection and a second session of treatment. RESULTS: There was no significant difference in the ability of sonic group and control group to eliminate cultivable bacteria from root canals (P > .05). A second session and intervisit calcium hydroxide disinfection were able to eliminate cultivable bacteria from significantly more teeth than a single session of treatment (P < .05). CONCLUSIONS: These in vivo results strengthen the case for a multi-visit approach to the treatment of apical periodontitis.
Subject(s)
Bacteria/drug effects , Dental Pulp Cavity/microbiology , Root Canal Irrigants/administration & dosage , Root Canal Preparation/methods , Calcium Hydroxide/therapeutic use , Colony Count, Microbial , Dental Restoration, Temporary , Disinfection/methods , Humans , Periapical Periodontitis/microbiology , Periapical Periodontitis/therapy , Root Canal Filling Materials/therapeutic use , Root Canal Preparation/instrumentation , Sodium Hypochlorite/administration & dosage , Sonication/instrumentation , Syringes , Therapeutic Irrigation/instrumentation , Time Factors , UltrasonicsABSTRACT
The purpose of this study was to test the ability of a commercially available iodoform gutta-percha, to delay infiltration of Enterococcus faecalis using a microleakage model. Seventy extracted single-rooted teeth were decoronated and biomechanically prepared using hand and rotary instruments. Thirty roots were obturated laterally with iodoform gutta-percha and another 30 with regular gutta-percha. Both groups were suspended in sterile BHI broth. An inoculum of E. faecalis suspension was placed at the coronal end of each root, incubated and replenished daily. The apical broth was observed for turbidity, indicating bacterial microleakage. Samples were observed for 32 days, and data was analyzed to compare microleakage between the two groups. The results showed no significant difference between the iodoform and regular gutta-percha samples in delaying microleakage of E. faecalis (p > 0.05).
