The Association between Dental Caries Incidence and Two Streptococcus mutans Populations in Monkeys Macaca fascicularis

1983 ◽  
Vol 17 (2) ◽  
pp. 125-130 ◽  
Author(s):  
D. Beighton ◽  
B. Cohen ◽  
H. Hayday
Keyword(s):  
Dental Caries ◽  
Streptococcus Mutans ◽  
Macaca Fascicularis

An effect of communal caging on the streptococcal flora of the dental plaque of monkeys (Macaca fascicularis)

1982 ◽  
Vol 16 (1) ◽  
pp. 68-70 ◽  
Author(s):  
D. Beighton ◽  
Hazel Hayday
Keyword(s):  
Dental Caries ◽  
Streptococcus Mutans ◽  
Dental Plaque ◽  
Macaca Fascicularis ◽  
Streptococcus Milleri ◽  
Sucrose Diet ◽  
Streptococcal Species ◽  
High Sucrose Diet ◽  
High Sucrose

22 monkeys were randomly allocated to one or other of 2 communes and fed a caries-promoting high sucrose diet. After 28 weeks commune 1 (13 monkeys) was found to harbour Streptococcus mutans serotype e as the predominant streptococcal species, but no monkey in commune 2 harboured this serotype. Instead the 9 monkeys of commune 2 harboured Streptococcus mutans serotypes c and h and had a greater proportion of Streptococcus mitior and Streptococcus milleri in their dental plaque. The significance of these observations on the use of monkeys as a model of human dental caries is discussed.

Cell Wall Ultrastructure in Three Strains of a Cariogenic Streptococcus

1971 ◽  
Vol 29 ◽  
pp. 338-339
Author(s):  
M. J. Kramer ◽  
Alan L. Coykendall
Keyword(s):  
Cell Wall ◽  
Dental Caries ◽  
Streptococcus Mutans ◽  
Microscopic Study ◽  
Electron Microscopic Study ◽  
Genetic Heterogeneity ◽  
Morphological Characteristics ◽  
Electron Microscopic ◽  
Dna Reassociation ◽  
Wall Ultrastructure

During the almost 50 years since Streptococcus mutans was first suggested as a factor in the etiology of dental caries, a multitude of studies have confirmed the cariogenic potential of this organism. Streptococci have been isolated from human and animal caries on numerous occasions and, with few exceptions, they are not typable by the Lancefield technique but are relatively homogeneous in their biochemical reactions. An analysis of the guanine-cytosine (G-C) composition of the DNA from strains K-1-R, NCTC 10449, and FA-1 by one of us (ALC) revealed significant differences and DNA-DNA reassociation experiments indicated that genetic heterogeneity existed among the three strains. The present electron microscopic study had as its objective the elucidation of any distinguishing morphological characteristics which might further characterize the respective strains.

Streptococcus Mutans Strains in Mother-Child Pairs of Children with Early Childhood Caries

2019 ◽  
Vol 43 (4) ◽  
pp. 252-256 ◽  
Author(s):  
Priya Subramaniam ◽  
Revathy Suresh
Keyword(s):  
Early Childhood ◽  
Dental Caries ◽  
Streptococcus Mutans ◽  
Early Childhood Caries ◽  
Mutans Streptococci ◽  
Similar Distribution ◽  
Healthy Children ◽  
Only Children ◽  
Polymerase Chain ◽  
Childhood Caries

Objective: Dental caries is both an infectious and transmissible disease. Maternal transfer of Mutans Streptococci occurs at an early age and is important in the initiation of dental caries in children. The aim of this study was to identify certain strains of Streptococcus mutans in mother-child pairs, of children with early childhood caries. Study design: Sixty mother-child pairs of healthy children aged 18–36 months were selected. Mothers with high levels of Streptococcus mutans in their saliva and only children with ECC were included. Dental plaque samples were collected from mother-child pairs. The plaque samples were stored, transferred to the laboratory and analyzed for Streptococcus mutans strains c, f, e and k, present in mother-child pairs using Real time Polymerase Chain Reaction (PCR) technique. Data obtained was subjected to statistical analysis for level of similarity in Streptococcus mutans strains present in mother-child pairs. Results: A similar distribution of Streptococcus mutans strains c, f and k was identified in 28 mother-child pairs. Streptococcus mutans strain e was seen in 18 pairs. Conclusion: Less than 50% of mother-child pairs showed similarity in distribution of Streptococcus mutans strains.

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