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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Prevalence, distribution of serotypes, and cariogenic potential in hamsters of mutans streptococci from elderly individuals.</title>
<author><name sortKey="Fitzgerald, D B" sort="Fitzgerald, D B" uniqKey="Fitzgerald D" first="D B" last="Fitzgerald">D B Fitzgerald</name>
</author>
<author><name sortKey="Fitzgerald, R J" sort="Fitzgerald, R J" uniqKey="Fitzgerald R" first="R J" last="Fitzgerald">R J Fitzgerald</name>
</author>
<author><name sortKey="Adams, B O" sort="Adams, B O" uniqKey="Adams B" first="B O" last="Adams">B O Adams</name>
</author>
<author><name sortKey="Morhart, R E" sort="Morhart, R E" uniqKey="Morhart R" first="R E" last="Morhart">R E Morhart</name>
</author>
</titleStmt>
<publicationStmt><idno type="wicri:source">PMC</idno>
<idno type="pmid">6874072</idno>
<idno type="pmc">264697</idno>
<idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC264697</idno>
<idno type="RBID">PMC:264697</idno>
<date when="1983">1983</date>
<idno type="wicri:Area/Pmc/Corpus">001538</idno>
<idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Corpus" wicri:corpus="PMC">001538</idno>
</publicationStmt>
<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Prevalence, distribution of serotypes, and cariogenic potential in hamsters of mutans streptococci from elderly individuals.</title>
<author><name sortKey="Fitzgerald, D B" sort="Fitzgerald, D B" uniqKey="Fitzgerald D" first="D B" last="Fitzgerald">D B Fitzgerald</name>
</author>
<author><name sortKey="Fitzgerald, R J" sort="Fitzgerald, R J" uniqKey="Fitzgerald R" first="R J" last="Fitzgerald">R J Fitzgerald</name>
</author>
<author><name sortKey="Adams, B O" sort="Adams, B O" uniqKey="Adams B" first="B O" last="Adams">B O Adams</name>
</author>
<author><name sortKey="Morhart, R E" sort="Morhart, R E" uniqKey="Morhart R" first="R E" last="Morhart">R E Morhart</name>
</author>
</analytic>
<series><title level="j">Infection and Immunity</title>
<idno type="ISSN">0019-9567</idno>
<idno type="eISSN">1098-5522</idno>
<imprint><date when="1983">1983</date>
</imprint>
</series>
</biblStruct>
</sourceDesc>
</fileDesc>
<profileDesc><textClass></textClass>
</profileDesc>
</teiHeader>
<front><div type="abstract" xml:lang="en"><p>The prevalence of mutans streptococci (Streptococcus mutans, Streptococcus cricetus, Streptococcus sobrinus, and Streptococcus rattus) was determined in the salivas of 169 elderly individuals ranging in age from 60 to 87 years. Approximately 40% of these individuals were edentulous and wore full upper and lower dentures. With the exception of a higher proportion of saliva counts below 1,000 CFU/ml in the full-denture wearers, the prevalence and the serotype and species distributions of the mutans streptococci were similar in the denture wearers and individuals with natural teeth only. The species and serotype distributions of mutans streptococci in this elderly population were also consistent with reported observations of other workers on younger, more caries-prone populations. A total of 87 representative isolates of the mutans streptococci were tested for cariogenic potential in a hamster model system. A considerable degree of variation in virulence between different strains was observed. However, these differences were not relatable to individual species or serotypes or to whether the organisms were isolated from denture wearers or naturally dentate subjects. The results of our studies indicate that elderly individuals with either natural or artificial dentitions may be a hitherto unrecognized reservoir of mutans streptococci having varying degrees of potential cariogenicity. Hence, in close family situations they could serve, along with parents and siblings, as vectors in the initial transmission of cariogenic microorganisms to young children.</p>
</div>
</front>
</TEI>
<pmc article-type="research-article"><pmc-comment>The publisher of this article does not allow downloading of the full text in XML form.</pmc-comment>
<front><journal-meta><journal-id journal-id-type="nlm-ta">Infect Immun</journal-id>
<journal-title>Infection and Immunity</journal-title>
<issn pub-type="ppub">0019-9567</issn>
<issn pub-type="epub">1098-5522</issn>
</journal-meta>
<article-meta><article-id pub-id-type="pmid">6874072</article-id>
<article-id pub-id-type="pmc">264697</article-id>
<article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject>
</subj-group>
</article-categories>
<title-group><article-title>Prevalence, distribution of serotypes, and cariogenic potential in hamsters of mutans streptococci from elderly individuals.</article-title>
</title-group>
<contrib-group><contrib contrib-type="author"><name><surname>Fitzgerald</surname>
<given-names>D B</given-names>
</name>
</contrib>
<contrib contrib-type="author"><name><surname>Fitzgerald</surname>
<given-names>R J</given-names>
</name>
</contrib>
<contrib contrib-type="author"><name><surname>Adams</surname>
<given-names>B O</given-names>
</name>
</contrib>
<contrib contrib-type="author"><name><surname>Morhart</surname>
<given-names>R E</given-names>
</name>
</contrib>
</contrib-group>
<pub-date pub-type="ppub"><month>8</month>
<year>1983</year>
</pub-date>
<volume>41</volume>
<issue>2</issue>
<fpage>691</fpage>
<lpage>697</lpage>
<abstract><p>The prevalence of mutans streptococci (Streptococcus mutans, Streptococcus cricetus, Streptococcus sobrinus, and Streptococcus rattus) was determined in the salivas of 169 elderly individuals ranging in age from 60 to 87 years. Approximately 40% of these individuals were edentulous and wore full upper and lower dentures. With the exception of a higher proportion of saliva counts below 1,000 CFU/ml in the full-denture wearers, the prevalence and the serotype and species distributions of the mutans streptococci were similar in the denture wearers and individuals with natural teeth only. The species and serotype distributions of mutans streptococci in this elderly population were also consistent with reported observations of other workers on younger, more caries-prone populations. A total of 87 representative isolates of the mutans streptococci were tested for cariogenic potential in a hamster model system. A considerable degree of variation in virulence between different strains was observed. However, these differences were not relatable to individual species or serotypes or to whether the organisms were isolated from denture wearers or naturally dentate subjects. The results of our studies indicate that elderly individuals with either natural or artificial dentitions may be a hitherto unrecognized reservoir of mutans streptococci having varying degrees of potential cariogenicity. Hence, in close family situations they could serve, along with parents and siblings, as vectors in the initial transmission of cariogenic microorganisms to young children.</p>
</abstract>
</article-meta>
</front>
</pmc>
</record>
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