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[Chlorhexidine as a root canal irrigant--antimicrobial and scanning electron microscopic evaluation]
Violeta Pavlović1, Slavoljub Zivković
1Clinic for Restorative Dentistry and Endodontics, Faculty of Dentistry, University of Belgrade, Belgrade, Serbia. nemanja.petrovic@stav.rs
Srpski Arhiv Za Celokupno Lekarstvo
|December 25, 2010
Summary
2% chlorhexidine digluconate (CHX) effectively kills tested bacteria, but sodium hypochlorite (NaOCl) is superior for root canal cleaning. CHX shows antimicrobial activity but leaves more smear layer than EDTA.
Area of Science:
- Endodontics
- Microbiology
- Dental Materials Science
Context:
- Root canal therapy success depends on effective irrigation.
- Antimicrobial efficacy and cleaning ability of irrigants are critical.
- 2% chlorhexidine digluconate (CHX) is a common endodontic irrigant.
Purpose:
- To evaluate the antimicrobial effects of 2% CHX against five microorganisms.
- To assess the root canal cleaning efficacy of 2% CHX compared to sodium hypochlorite (NaOCl) and EDTA.
Summary:
- 5.25% NaOCl demonstrated the highest antimicrobial effectiveness against all tested microorganisms.
- 2% CHX and 2.5% NaOCl exhibited antimicrobial activity, but with smaller inhibition zones.
- 15% EDTA provided the best root canal wall cleaning, while NaOCl and CHX groups showed significant smear layer presence.
Impact:
- While 2% CHX possesses significant antimicrobial properties, it is less effective for smear layer removal compared to EDTA.
- This study highlights the importance of irrigant selection for both antimicrobial action and cleaning in endodontic treatment.
- Findings suggest a combination of irrigants may be necessary for optimal root canal disinfection and cleaning.
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