Experiences of Bacteriological Root Canal Control

Engström, B; Frostell, G

doi:10.3109/00016356408993964

Cited by 55 publications

(23 citation statements)

References 6 publications

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“…E. faecalis was chosen because this bacteria is commonly isolated in teeth with failing root canals (23,24) and because it is known to have several virulence factors that make it difficult to eradicate from the canals. These virulence factors include proton pump (25), the ability to withstand prolonged starvation (26), to inhibit the cytokine-producing functions of Th-1 and Th-2 cells (27), to bind collagen (28), to resist Ca(OH) 2, and to invade dentinal tubules (29).…”

Section: Discussionmentioning

confidence: 99%

Comparison of Bacterial Reduction in Straight and Curved Canals Using Erbium, Chromium:Yttrium-Scandium-Gallium-Garnet Laser Treatment versus a Traditional Irrigation Technique With Sodium Hypochlorite

Dewsnup

Pileggi

Haddix

et al. 2010

Journal of Endodontics

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Section: Discussionmentioning

confidence: 99%

Comparison of Bacterial Reduction in Straight and Curved Canals Using Erbium, Chromium:Yttrium-Scandium-Gallium-Garnet Laser Treatment versus a Traditional Irrigation Technique With Sodium Hypochlorite

Dewsnup

Pileggi

Haddix

et al. 2010

Journal of Endodontics

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“…The treatment resistance of enterococci in the root canal has been recognized by several authors (Bender & Seltzer 1952, Engström 1964, Engström & Frostell 1964, Möller 1966, Méjare 1975, Gomes et al 1996. Importantly, a routinely used interappointment dressing such as calcium hydroxide has shown to be ineffective in killing E. faecalis present in root canals (Stevens & Grossman 1983, Byström et al 1985, Haapasalo & Örstavik 1987, Reit & Dahlén 1988.…”

Section: Discussionmentioning

confidence: 99%

Microbiological status of root‐filled teeth with apical periodontitis

et al. 1998

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The present study examined the microbiological status of 100 root-filled teeth with radiographically verified apical periodontitis--the pathology (P) group--and of 20 teeth without signs of periapical pathosis--the technical (T) group. In the P group 117 strains of bacteria were recovered in 68 teeth. In most of the cases examined one or two strains were found. Facultative anaerobic species predominated among these isolates (69% of identified strains). Growth was classified as 'sparse' or 'very sparse' in 53%, and as 'heavy' or 'very heavy' in 42%. Enterococci were the most frequently isolated genera, showing 'heavy' or 'very heavy' growth in 25 out of 32 cases (78%). In 11 teeth of the T group no bacteria were recovered, whilst the remaining nine yielded 13 microbial strains. Eight of these grew 'very sparsely'. It is concluded that the microflora of the obturated canal differs from that found normally in the untreated necrotic dental pulp, quantitatively as well as qualitatively. Nonsurgical retreatment strategies should be reconsidered.

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“…DifTerences in technique might partly explain this divergence but it is also suggested that the composition of the initial flora in the root canals might influence the outcome of the treatment (12). It has been reported that enterococci are difficult to eliminate from infected root canals (2,11,16) and a prevalence of these bacteria might in0uence the results.…”

Section: Discussionmentioning

confidence: 99%

Bacteriologic evaluation of the efficacy of mechanical root canal instrumentation in endodontic therapy

Byström

Sundqvist

1981

European J Oral Sciences

588

597

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– The presence of bacteria in 15 single‐rooted teeth, with periapical lesions, was studied throughout a whole period of treatment. The root canals were irrigated with physiologic saline solution during instrumentation. No antibacterial solutions or dressigs were used. Bacteria were found in all irnitial specimens form the teeth (median numver of bacterial cell 4x105; range 102‐107) and the number of strains in the specimens ranged from 1 to 10.88% of the strains were anaerobic. The most commonly isolated species were: Peptostreptococcus micros, Peptostrcptococcus anacrobius, Fusobacterium nucleatum, Bacteroides oralis, Bacteroides melaninogenicus subsp. intermedius and Eubacterium alactolyticum. Mechanical instrumentation reduced the number of bacteria considerably. Specimens taken at the beginning of each appointment usually contained 104‐106 bacterial cells and at the end 102‐103fewer. Bacteria were eliminated from the root canals of eight teeth during the treatment. In seven root canals bacteria presisted despite treatment on five successive occasions. There was no evidence that specific microorganisms were implicated in these persistent infections. Teeth where the infection persisted despite being treated five times were those with a hig number of bacteria in the initial sample.

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Experiences of Bacteriological Root Canal Control

Cited by 55 publications

References 6 publications

Comparison of Bacterial Reduction in Straight and Curved Canals Using Erbium, Chromium:Yttrium-Scandium-Gallium-Garnet Laser Treatment versus a Traditional Irrigation Technique With Sodium Hypochlorite

Comparison of Bacterial Reduction in Straight and Curved Canals Using Erbium, Chromium:Yttrium-Scandium-Gallium-Garnet Laser Treatment versus a Traditional Irrigation Technique With Sodium Hypochlorite

Microbiological status of root‐filled teeth with apical periodontitis

Bacteriologic evaluation of the efficacy of mechanical root canal instrumentation in endodontic therapy

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