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Antibacterial Effects of Endodontic Dressings on Enterococcus Faecalis in Human Root Dentine

Wilma Brugger
Vera Hofer
Peter Städtler

Puni tekst: hrvatski pdf 467 Kb

str. 326-336

preuzimanja: 825


Puni tekst: engleski pdf 467 Kb

str. 326-336

preuzimanja: 1.567



The aim of this in vitro study was to assess antimicrobial activity of calcium hydroxide (Calasept) and chlorhexidine (CHX) in various concentrations with respect to Enterococcus faecalis in human root dentine up to 100 μm.
Material and Methods: Forty-eight human root canals were enlarged to standard size (ISO 40) and inoculated with Enterococcus faecalis for 21 days. After inoculation the canals were medicated with one of the following: 2 %, 1 % and 0.2 % chlorhexidin gel, Chlorhexidine
releasing gutta-percha points (active point), calcium hydroxide and aqua distillate (aqua dest.). Aqua dest. served as control medium. At the end of a disinfection period of one week dentine samples were collected with reamer and H-file (ISO 45 and 50) and put onto Columbia agar plates.
Results: Bacterial growth was assessed by counting the colony forming units (CFU) after 24 hours and 48 hours of incubation. CHX gels could penetrate dentine up to 100 μm. Two % CHX gel is slightly stronger than 1 % CHX gel (p-value 0.0925) only in the peripheral dentine sample after 48 hours of incubation, and 0.2 % CHX gel had less effects on E. faecalis than 2 % CHX (p-value 0.0191). In the central dentine sample no difference between the CHX gels could be observed. In general, CHX gels were more effective than the other medicaments tested. No significant difference between Ca(OH)2 and Aqua dest. could be observed.
Conclusion: For effective elimination of E. faecalis, especially in deeper dentine-layers, CHX concentrations of at least 1 % are necessary. An intracanal, interappointment dressing of 2 % CHX may have the potential to eliminate E. faecalis in vivo.

Ključne riječi

Endodontics, Enterococcus faecalis, Dentine, Secondary, Anti Infective Agents, Local

Hrčak ID:



Podaci na drugim jezicima: hrvatski

Posjeta: 4.151 *