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Comparison of Microbiome in Stimulated Saliva in Edentulous and Dentate Subjects

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Book cover The Oral Microbiome

Part of the book series: Methods in Molecular Biology ((MIMB,volume 2327))

Abstract

Measurement of saliva microbes is promoted as a way to detect oral and systemic disease, yet there is a multitude of factors that affect the oral microbiome. The salivary microbiome is influenced by biofilm of shedding (epithelial) and non-shedding (tooth) surfaces. Methods for study of the salivary microbiome are by no means standardized, and differences in sample collection, storage, and processing can all affect results to some degree. Here we describe one method of saliva collection that has been validated for reproducibility. Standard 16S rRNA gene analysis is done using the Human Oral Microbiome Database library which results in analysis that is straightforward. Everything about this procedure except the library synthesis and DNA sequencing itself can easily be done in-house. To gauge the ability of salivary microbial analytics to distinguish between edentulous and dentate oral conditions, differences in the saliva microbiome of subjects with and without teeth were examined. Fifty-two dentate and 49 edentulous subjects provided stimulated saliva samples. 16S rRNA gene sequencing, QIIME-based data processing, and statistical analysis were done using several different analytical approaches to detect differences in the salivary microbiome between the two groups. Bacteria diversity was lower in the edentulous group. Remarkably, all 31 of the most significant differences in taxa were deficits that occurred in the edentulous group. As one might expect, many of these taxa are attributed to dental plaque and gingival sulcus-associated bacteria verifying that the measurement of 16S rRNA genes in the bacteria of the saliva can be used to reproducibly measure expected differences in the oral microbiome that occur with edentulism or other conditions and diseases.

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Authors and Affiliations

  1. Department of Oral Medicine and Diagnostic Sciences, College of Dentistry, University of Illinois at Chicago, Chicago, IL, USA

    Guy R. Adami, Michael J. Ang & Elissa M. Kim

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  1. Guy R. Adami
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  2. Michael J. Ang
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  3. Elissa M. Kim
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Correspondence to Guy R. Adami .

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Editors and Affiliations

  1. College of Dentistry, University of Illinois at Chicago, Chicago, IL, USA

    Guy R. Adami

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Adami, G.R., Ang, M.J., Kim, E.M. (2021). Comparison of Microbiome in Stimulated Saliva in Edentulous and Dentate Subjects. In: Adami, G.R. (eds) The Oral Microbiome. Methods in Molecular Biology, vol 2327. Humana, New York, NY. https://doi.org/10.1007/978-1-0716-1518-8_5

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  • DOI: https://doi.org/10.1007/978-1-0716-1518-8_5

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  • Publisher Name: Humana, New York, NY

  • Print ISBN: 978-1-0716-1517-1

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