Abstract
BackgroundThe aim of this study was to determine in vitro the bactericidal potential of 38% silver diamine fluoride (SDF) alone, potassium iodide (PI) alone, and the two in combination (SDF + PI) against three bacterial species commonly found in root canal samples (Enterococcus faecalis, Actinomyces naeslundii and Parvimonas micra).MethodsThe potential bactericidal rates for SDF, PI and SDF + PI against E. faecalis, A. naeslundii and P. micra were calculated as reduction of bacteria colony forming units.ResultsThe bactericidal potential of SDF was at 99.97–100% against E. faecalis and 100% against A. naeslundii and P. micra. SDF + PI showed a 100% bactericidal effect against P. micra, 99.89–99.98% against E. faecalis and 99.98–100% against A. naeslundii. The bactericidal effect of PI was 99.51–99.98% against E. faecalis, 99.27–99.95% against A. naeslundii and 99.93–100% against P. micra. The differences between controls and bacteria exposed to the antibacterial agents were statistically significant (p < 0.05).ConclusionsSDF had an effective bactericidal effect against the examined bacteria. However, the limitations of this in vitro study do not allow a recommendation of the employment of these solutions as root canal irrigants. Additional investigations are necessary to assess their endodontic clinical applicability.
Highlights
The aim of this study was to determine in vitro the bactericidal potential of 38% silver diamine fluoride (SDF) alone, potassium iodide (PI) alone, and the two in combination (SDF + PI) against three bacterial species com‐ monly found in root canal samples (Enterococcus faecalis, Actinomyces naeslundii and Parvimonas micra)
The aim of this study was to investigate in vitro the bactericidal properties of silver diamine fluoride and potassium iodide, alone and in combination in different concentrations against three bacteria commonly found in root canal samples: two facultatively anaerobic strains, coccal (E. faecalis) or rod-shaped (A. naeslundii) and an obligately anaerobic one (P. micra)
The largest inhibition zones were produced by undiluted silver diamine fluoride (SDF) ranging from 1.2 ± 0.1 cm Bacterial growth E. faecalis DSM 20376, A. naeslundii A65, P. micra DSM 20468
Summary
The aim of this study was to determine in vitro the bactericidal potential of 38% silver diamine fluoride (SDF) alone, potassium iodide (PI) alone, and the two in combination (SDF + PI) against three bacterial species com‐ monly found in root canal samples (Enterococcus faecalis, Actinomyces naeslundii and Parvimonas micra). Dahlén [3] reported that bacteria such as lactobacilli, streptococci, actinomyces and Gram-negative. The removal of inflamed and/or necrotic pulp tissue, and of established bacteria is the main purpose of the mechanical and chemical shaping and cleaning process of the root canal system. Mechanical preparation of the root canal ensures shaping of the root canal; yet, a complete removal of infected and/or non-infected material cannot be accomplished. For almost a century the chemical cleaning of the root canal system has been recommended [4]. The standard solution for this purpose is sodium hypochlorite, which is recommended in concentrations from 0.5 to 5.25% [5], being the only root canal bactericidal irrigating solution capable of dissolving
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