Identification of Human Strains of Actinomyces viscosus

Gerencser, Mary Ann; Slack, John M.

doi:10.1128/aem.18.1.80-87.1969

Cited by 40 publications

(13 citation statements)

References 9 publications

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“…It was necessary to evaluate the A. viscosus and A. naeslundii as one group since the two species of Actinomyces could not be distinguished morphologically from each other on the CFAT meditim. The similarity of these two species is well documented (19)(20)(21). Some workers (20) report that the similarities between the two species are so great that A. viscosus can be regarded as a catalase-posidve variant of A. naeslundii.…”

Section: Discussionmentioning

confidence: 88%

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Proportions of Streptococcus mutans, lactobacilli and Actinomyces spp in root surface plaque

Fure

Romaniec

Emilson

et al. 1987

European J Oral Sciences

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Fure S, Romaniec M, Emilson CG, Krasse B: Proportions of Streptococcus mutans, lactobacilli and Actinomyces. spp in rool surface plaque. ScandJ Dent 1987; 95: 119-23.Abstract ~ The incidence of Streptococcus mutans, lactobacilli and Actinomyces was examined in root surface dental plaque from 24 subjects with root surface caries and in 24 subjects with exposed root surfaces as a consequence of periodontitis but without root surface caries. Plaque was collected from the most posterior teeth in each quadrant: in the caries group from carious lesions and in the periodontitis group from buccai root surfaces. There were significantly higher proportions of S. mutans and lactobacilli in denta! plaque samples taken from subjects suffering from root surface caries than in samples from subjects without root surface caries. The level of the group A. viscosus/naeslundii in the periodontitis group was higher than that found in the root surface caries group, but the difference was not statistically significant.

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Section: Discussionmentioning

confidence: 88%

“…The similarity of these two species is well documented (19)(20)(21). Some workers (20) report that the similarities between the two species are so great that A. viscosus can be regarded as a catalase-posidve variant of A. naeslundii. Intraoral pathogenicity in experimental'animals is similar.…”

Section: Discussionmentioning

confidence: 88%

Proportions of Streptococcus mutans, lactobacilli and Actinomyces spp in root surface plaque

Fure

Romaniec

Emilson

et al. 1987

European J Oral Sciences

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“…The high degree of overlapping in the colony types (Williams, 1974) and fermentation reactions exhibited by strains of catalase-positive and catalase-negative facultative Actinomyces suggests that these organisms are very closely related and that the ability of A. viscosus to break down hydrogen peroxide may be a more superficial distinction than would warrant separation at the species level (Melville 1965, Gerencser & Slack 1969, Holmberg & Hollander 1973. For this reason the Actinomyces were categorized as Group 1, II and III on the basis of the catalase reaction and the ability to form colonies within 48 hours when incubated aerobically in the presence of carbon dioxide.…”

Section: Discussionmentioning

confidence: 99%

Subgingival microflora and periodontitis

Williams

Pantalone

Sherris

1976

J of Periodontal Research

147

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Predominant bacterial flora resident in subgingival plaque was characterized and evaluated in relation to the etiology of periodontal disease. Small groups of clinically and radiographically identified periodontal patients and control subjects were studied. A comprehensive inventory of cultivable flora was made. The most common group of organisms were the Gram‐positive rods, the majority of which were Actinomyces. A larger proportion of anaerobic Gram‐negative rods were isolated than indicated in the results of previous studies. Considerable variability in floral content was found in different sites in the same patient. However, no statistically significant differences were observed in the flora between clinically normal and pathological sites of the same patients. A significantly greater number of facultative Actinomyces was present in the flora of periodontal patients as compared to control subjects. Sera from the same nine subjects were assayed by indirect immunofluorescence for circulating antibodies to 12 strains of plaque bacteria. No differences in antibody titers were observed between sera from periodontal patients and control subjects.

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“…1967] differentiated the hamster organism from A. naeshmdii. Organisms with these characteristics from humans and rodents are now classified as Aclinomyces viscosus [Gerencser & Slack, 1969] and represent a significant microbial component of the gingival microflora.…”

Section: Jof Anmentioning

confidence: 99%

Microbial Etiology of Root Surface Caries

Jordan¹

1986

Gerodontology

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Available knowledge relating to the microbiology of root surface caries was reviewed. This included direct information from microbiological observations on human and animal material as well as subsidiary information derived from pertinent dietary studies and histological examination of cemental lesions. Early investigations on root surface caries in experimental animals have provided valuable insight into some of the dietobacterial interactions involved. However, these ideas have not been completely validated at the human level. It was concluded that interactions between oral bacteria and other factors involved in the development of root surface dental caries may be broader in scope and more difficult to interpret than the bacterial activities which result in coronal caries.

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Identification of Human Strains of Actinomyces viscosus

Cited by 40 publications

References 9 publications

Proportions of Streptococcus mutans, lactobacilli and Actinomyces spp in root surface plaque

Proportions of Streptococcus mutans, lactobacilli and Actinomyces spp in root surface plaque

Subgingival microflora and periodontitis

Microbial Etiology of Root Surface Caries

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