Evidence map›Paper›PMID 34008792›Full record

ArticleJournal of applied oral science : revista FOB2021

The prevalence of novel periodontal pathogens and bacterial complexes in Stage II generalized periodontitis based on 16S rRNA next generation sequencing.

Salem Abu Fanas, Carel Brigi, Sudhir Rama Varma, Vijay Desai, Abiola Senok, Jovita D'souza

Open access · diamondAbstract read
In one paragraph

Article in Journal of applied oral science : revista FOB, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 1 pooled it
4.4field-weighted citation impact, top 5% 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

22 citing papers in PubMed, 1 synthesis or guideline pooled it, 37 citations in OpenAlex.

  1. Pooled it
  2. Plants (Basel, Switzerland) · 2026
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  12. Correlation between Inflammasomes and Microbiota in Peri-Implantitis.International journal of molecular sciences · 2024
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  18. Complete Genome Sequence of "Microbiology resource announcements · 2022
    Article
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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

6 authors at 3 institutions in 1 country.

Salem Abu FanasAjman University, College of Dentistry, Department of Clinical Sciences, Ajman, United Arab Emirates; Center of Medical and Bio-allied Health Sciences research, Ajman University, Ajman, UAE.ORCID http://orcid.org/0000-0003-3913-7525
Carel BrigiAjman University, College of Dentistry, Department of General Dentistry, Ajman, United Arab Emirates.ORCID http://orcid.org/0000-0003-1396-1137
Sudhir Rama VarmaAjman University, College of Dentistry, Department of Clinical Sciences, Ajman, United Arab Emirates; Center of Medical and Bio-allied Health Sciences research, Ajman University, Ajman, UAE.ORCID http://orcid.org/0000-0001-6793-9344
Vijay DesaiAjman University, College of Dentistry, Department of Clinical Sciences, Ajman, United Arab Emirates; Center of Medical and Bio-allied Health Sciences research, Ajman University, Ajman, UAE.ORCID http://orcid.org/0000-0001-7364-6097
Abiola SenokMohammed Bin Rashid University of Medicine and Health Sciences, College of Medicine, Department of Microbiology.ORCID http://orcid.org/0000-0001-6382-198X
Jovita D'souzaAjman University, College of Dentistry, Department of Clinical Sciences, Ajman, United Arab Emirates; Center of Medical and Bio-allied Health Sciences research, Ajman University, Ajman, UAE.ORCID http://orcid.org/0000-0003-4520-4982
Ajman University · AEGulf Medical University · AEMohammed Bin Rashid University of Medicine and Health Sciences · AE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo define the subgingival microbial profile associated with Stage II generalized periodontitis using next-generation sequencing and to determine the relative abundance of novel periodontal pathogens and bacterial complexes. METHODOLOGY: Subgingival biofilm samples were collected from 80 subjects diagnosed with Stage II generalized periodontitis. Bacterial DNA was extracted, and 16S rRNA-based bacterial profiling via next-generation sequencing was carried out. The bacterial composition and diversity of microbial communities based on the age and sex of the patients were analyzed. The bacterial species were organized into groups: bacterial complexes (red, orange, purple, yellow, and green), novel periodontal pathogens, periodontal health-related species, and unclassified periodontal species. The results were analyzed and statistically evaluated.

resultsThe highest number of bacteria belonged to the phylum Bacteroidetes and Firmicutes. In terms of relative abundance, the orange complex represented 18.99%, novel bacterial species (Fretibacterium spp. and Saccharibacteria spp.) comprised 17.34%, periodontal health-related species accounted for 16.75% and unclassified periodontal species represented (Leptotrichia spp. and Selenomonas spp.) 15.61%. Novel periodontal pathogens had outweighed the periodontal disease-related red complex (5.3%). The one-sample z-test performed was statistically significant at p<0.05. The Beta diversity based on the unweighted UniFrac distance at the species level demonstrated a total variance of 15.77% based on age and 39.19% on sex, which was not statistically significant.

conclusionThe bacterial species corresponding to the disease-related orange complex and novel periodontal pathogens are predominant in Stage II generalized periodontitis.

Indexed as

Dental PlaquePeriodontitisAdultBacteriaDNA, BacterialHigh-Throughput Nucleotide SequencingHumansPrevalenceRNA, Ribosomal, 16SDNA, BacterialRNA, Ribosomal, 16S

Identifiers

PMID34008792
PMCPMC8128322
OpenAlexW3160263053

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.