Effect of endodontic procedures on enterococci, enteric bacteria and yeasts in primary endodontic infections

Ferrari, Patricia Helena Pereira; Cai, Silvana; Bombana, Antônio Carlos

doi:10.1111/j.1365-2591.2005.00947.x

Cited by 66 publications

(88 citation statements)

References 37 publications

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“…Recently, E. faecium has become one of the most important microorganisms in nosocomial and systemic infections [2][3][4][5], but few studies have reported the presence of E. faecium associated with endodontic infections [35,37,38]. In this study, E. faecium was found in only two patients (5.2%).…”

Section: Discussioncontrasting

confidence: 45%

“…In this study, E. faecium was found in only two patients (5.2%). Ferrari et al [37] also reported a low prevalence of E. faecium in primary infections using culture and biochemical testing identification methods. However, some studies verified a high prevalence of E. faecium in persistent endodontic infections through identification using molecular methods (DNA-DNA hybridization checkerboard) [35,38].…”

Section: Discussionmentioning

confidence: 99%

“…The high prevalence of E. faecalis in persistent periapicopatias may be due to its resistance to disinfection procedures used during the initial endodontic therapy. In addition, E. faecalis are able to invade root canals during or after endodontic treatments of coronary micro-leakages and to survive in conditions of low nutrient concentrations [36,37].…”

Section: Discussionmentioning

confidence: 99%

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Enterococcus faecium and Enterococcus faecalis in endodontic infections: antibiotic resistance profile and susceptibility to photodynamic therapy

et al. 2017

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Introduction Enterococcus faecium has become an important microorganism in nosocomial infections with great ability to acquire antibiotic resistance. However, little is known about their presence on the oral cavity. Therefore, our objective was to verify the presence of E. faecium and E. faecalis in endodontic infections and compare their susceptibility to conventional antibiotics and photodynamic therapy. Methods We performed 38 collections from the root canals of different patients. Positive Enterococcus agar samples were submitted to phenotypic and genotypic testing for speciesspecific confirmation. The isolates identified as E. faecium and E. faecalis were tested for susceptibility to antibiotics by the E-test method. After that, the isolates were evaluated for susceptibility to photodynamic therapy (PDT) using methylene blue and gallium arsenide aluminum laser with a wavelength of 660 nm and fluence of 39.5 J/cm 2 (energy of 15 J and time of 428 s).Results Cultures positive for E. faecalis were found in 22 patients (58%). Among these patients, only two had E. faecium in mixed infections with E. faecalis. In the isolates of E. faecalis, 27% were resistant to antibiotics, including tetracycline, ciprofloxacin, and azithromycin. The isolates of E. faecium showed no resistance to the antibiotics tested. Both the isolates of E. faecium and E. faecalis exhibit significant susceptibility to PDT, including the isolates resistant to antibiotics. The reductions achieved by PDT ranged of 2.76 to 4.31 log 10 for E. faecalis strains and of 3.93 to 4.33 log 10 for E. faecium strains. Conclusion E. faecium showed lower prevalence in endodontic infections and higher susceptibility to antibiotics when compared to E. faecalis. In in vitro assays, PDT had a significant antimicrobial activity for both strains.

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Section: Discussioncontrasting

confidence: 45%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Enterococcus faecium and Enterococcus faecalis in endodontic infections: antibiotic resistance profile and susceptibility to photodynamic therapy

et al. 2017

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“…Several studies have shown that chemical-surgical preparation is able to achieve high levels of disinfection, but is unable to completely reduce the microbiota of the root canal system [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Effect of Photodynamic Therapy with Different Formulations of Methylene Blue in Teeth Contaminated by Enterococcus faecalis

Simionato¹

2013

J Phys Chem Biophys

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“…Os bacilos entéricos não excedem mais que 5% da microbiota dos canais radiculares infectados, mas a sua permanência no sistema de canais pode resultar em persistência da lesão periapical (Ferrari et al 2005). …”

Section: Querido (2006) Verificou a Presença De Enterobactérias Eunclassified

Ação de diferentes fotossensibilizadores na terapia fotodinâmica antimicrobiana

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Effect of endodontic procedures on enterococci, enteric bacteria and yeasts in primary endodontic infections

Abstract: Enterococci, enteric bacteria and yeasts were present in primary endodontic infections. Enterococci, particularly Enterococcus faecalis and E. faecium were resistant to removal by root canal preparation followed by intracanal dressing.

Cited by 66 publications

References 37 publications

Enterococcus faecium and Enterococcus faecalis in endodontic infections: antibiotic resistance profile and susceptibility to photodynamic therapy

Enterococcus faecium and Enterococcus faecalis in endodontic infections: antibiotic resistance profile and susceptibility to photodynamic therapy

Effect of Photodynamic Therapy with Different Formulations of Methylene Blue in Teeth Contaminated by Enterococcus faecalis

Ação de diferentes fotossensibilizadores na terapia fotodinâmica antimicrobiana

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