Evidence map›Paper›PMID 31279340›Full record

ArticleMicrobiome2019

Microbial differences between dental plaque and historic dental calculus are related to oral biofilm maturation stage.

Irina M Velsko, James A Fellows Yates, Franziska Aron, Richard W Hagan, Laurent A F Frantz, Louise Loe, Juan Bautista Rodriguez Martinez, Eros Chaves, Chris Gosden, Greger Larson and 1 more

Open access · goldAbstract readComparative StudyHistorical Article
In one paragraph

Article in Microbiome, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 88 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
88citing papers in PubMed, 1 pooled it
15.0field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

88 citing papers in PubMed, 1 synthesis or guideline pooled it, 170 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. The Oral Microbiome of King Richard III of England.American journal of biological anthropology · 2026
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  10. Innate Immunity Gene Variants Affect Periodontitis Susceptibility.Advances in experimental medicine and biology · 2026
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  15. Review
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28 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

11 authors at 5 institutions in 3 countries.

Irina M VelskoThe Palaeogenomics and Bio-Archaeology Research Network, Research Laboratory for Archaeology and the History of Art, University of Oxford, Oxford, OX1 3QY, UK. velsko@shh.mpg.de.ORCID 0000-0001-9810-9917
James A Fellows YatesDepartment of Archaeogenetics, Max Planck Institute for the Science of Human History, 07745, Jena, Germany.
Franziska AronDepartment of Archaeogenetics, Max Planck Institute for the Science of Human History, 07745, Jena, Germany.
Richard W HaganDepartment of Archaeogenetics, Max Planck Institute for the Science of Human History, 07745, Jena, Germany.
Laurent A F FrantzThe Palaeogenomics and Bio-Archaeology Research Network, Research Laboratory for Archaeology and the History of Art, University of Oxford, Oxford, OX1 3QY, UK.
Louise LoeHeritage Burial Services, Oxford Archaeology, Oxford, OX2 0ES, UK.
Juan Bautista Rodriguez MartinezDental Office Dr. Juan Bautista Rodriguez, Pozo Alcon, Jaén, Spain.
Eros ChavesDepartment of Periodontics, University of Oklahoma Health Sciences Center, Oklahoma City, 73117, OK, USA.
Chris GosdenThe Palaeogenomics and Bio-Archaeology Research Network, Research Laboratory for Archaeology and the History of Art, University of Oxford, Oxford, OX1 3QY, UK.
Greger LarsonThe Palaeogenomics and Bio-Archaeology Research Network, Research Laboratory for Archaeology and the History of Art, University of Oxford, Oxford, OX1 3QY, UK.
Christina WarinnerDepartment of Archaeogenetics, Max Planck Institute for the Science of Human History, 07745, Jena, Germany. warinner@shh.mpg.de.
Max Planck Institute for the Science of Human History · DEUniversity of Oxford · GBOxford Archaeology · GBQueen Mary University of London · GBUniversity of Oklahoma Health Sciences Center · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundDental calculus, calcified oral plaque biofilm, contains microbial and host biomolecules that can be used to study historic microbiome communities and host responses. Dental calculus does not typically accumulate as much today as historically, and clinical oral microbiome research studies focus primarily on living dental plaque biofilm. However, plaque and calculus reflect different conditions of the oral biofilm, and the differences in microbial characteristics between the sample types have not yet been systematically explored. Here, we compare the microbial profiles of modern dental plaque, modern dental calculus, and historic dental calculus to establish expected differences between these substrates.

resultsMetagenomic data was generated from modern and historic calculus samples, and dental plaque metagenomic data was downloaded from the Human Microbiome Project. Microbial composition and functional profile were assessed. Metaproteomic data was obtained from a subset of historic calculus samples. Comparisons between microbial, protein, and metabolomic profiles revealed distinct taxonomic and metabolic functional profiles between plaque, modern calculus, and historic calculus, but not between calculus collected from healthy teeth and periodontal disease-affected teeth. Species co-exclusion was related to biofilm environment. Proteomic profiling revealed that healthy tooth samples contain low levels of bacterial virulence proteins and a robust innate immune response. Correlations between proteomic and metabolomic profiles suggest co-preservation of bacterial lipid membranes and membrane-associated proteins.

conclusionsOverall, we find that there are systematic microbial differences between plaque and calculus related to biofilm physiology, and recognizing these differences is important for accurate data interpretation in studies comparing dental plaque and calculus.

Indexed as

Bacterial Physiological PhenomenaBacteriaBacterial ProteinsBiofilmsBone and BonesDental CalculusDental PlaqueDNA, AncientDNA, BacterialFemaleHistory, AncientHumansMaleMetagenomicsMicrobiotaPeriodontal DiseasesBacterial ProteinsDNA, AncientDNA, BacterialAncient dental calculusMetagenomicsMetaproteomicsOral microbiomePeriodontal disease

Identifiers

PMID31279340
PMCPMC6612086
OpenAlexW2954206569

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.