Evidence map›Paper›PMID 21235330›Full record

Trial reportJournal of periodontology2011

Comparison of gingival crevicular fluid sampling methods in patients with severe chronic periodontitis.

Arndt Guentsch, Martin Kramesberger, Aneta Sroka, Wolfgang Pfister, Jan Potempa, Sigrun Eick

Registry-linked trialOpen access · greenAbstract readComparative StudyRandomized Controlled Trial
In one paragraph

Trial report in Journal of periodontology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04605289 (Biochemical Efficacy of Cymbopogon Citratus Gel as Local Drug Delivery Agent in Reducing Matrix Metalloproteinase-8 Levels Intra-crevicularly in Moderate Periodontitis Patients), which is not on this map. Cited by 69 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
69citing papers in PubMed, 2 pooled it
7.6field-weighted citation impact, top 2% 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.

NCT04605289 phase1 / phase2completednot on this mapstarted 2020, after this paper: background citation

Biochemical Efficacy of Cymbopogon Citratus Gel as Local Drug Delivery Agent in Reducing Matrix Metalloproteinase-8 Levels Intra-crevicularly in Moderate Periodontitis Patients

TypeinterventionalSponsorAlexandria UniversityRan2020 to 2020Enrolled40ConditionsPeriodontitisArmslemongrass essential oil gel, Placebo, Scaling and root planing
3 · Its place in the literature

Who cites it

69 citing papers in PubMed, 2 syntheses or guidelines pooled it, 131 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Trial
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  10. Gingipain proteases from the bacteriumProceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  11. Article
  12. Article
  13. SmartGel OV: A NaturalMedicina (Kaunas, Lithuania) · 2025
    Observational
  14. Article
  15. Oral Microbiome Dysbiosis and Citrullination in Rheumatoid Arthritis.Advances in experimental medicine and biology · 2025
    Review
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article

9 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

6 authors at 2 institutions in 2 countries.

Arndt GuentschDepartment of Conservative Dentistry, University Hospital, Jena, Germany.
Martin Kramesberger
Aneta Sroka
Wolfgang Pfister
Jan Potempa
Sigrun Eick
Friedrich Schiller University Jena · DEUniversity of Bern · CH

Funding

BACTERIAL PROTEINASES IN PERIODONTAL DISEASER01DE009761 · NIDCR · UNIVERSITY OF LOUISVILLE · PI POTEMPA, JAN S · 1991 to 2012
$3.8M
NIDCR NIH HHS DE 09761NIDCR NIH HHS R01 DE009761
6 · The paper itself

Abstract

backgroundThe analysis of samplings from periodontal pockets is important in the diagnosis and therapy of periodontitis. In this study, three different sampling techniques were compared to determine whether one method yielded samples suitable for the reproducible and simultaneous determination of bacterial load, cytokines, neutrophil elastase, and arginine-specific gingipains (Rgps). Rgps are an important virulence factor of Porphyromonas gingivalis, the exact concentration of which in gingival crevicular fluid (GCF) has not been quantified.

methodsGCF was sampled from four sites per patient (one sample per quadrant using two samples per method) in 36 patients with chronic periodontitis. One week later, the procedure was repeated with alternative methods. Variables determined were loads of Aggregatibacter actinomycetemcomitans (previously Actinobacillus actinomycetemcomitans) and P. gingivalis, levels of interleukin-6 and -8, activity of neutrophil elastase, and level of Rgps.

resultsThe detected cytokine levels were higher using paper strips compared to paper points. Bacteria were found in similar loads from paper strips and paper points. Rgps were only detectable in high quantities by washing the periodontal pocket. The level of Rgps correlated with the load of P. gingivalis.

conclusionsThe use of paper strips was suitable for the simultaneous determination of microbial and immunologic parameters. Obtaining GCF by washing can be useful for special purposes. The gingipain concentration in periodontal pockets was directly determined to be ≤1.5 μM. This value indicated that most of the substrates of these proteases by in vitro assays identified until now can be easily degraded in P. gingivalis-infected sites.

Indexed as

Adhesins, BacterialAdultAggregatibacter actinomycetemcomitansBacterial LoadChronic PeriodontitisCysteine EndopeptidasesFemaleGingipain Cysteine EndopeptidasesGingival Crevicular FluidGingival HemorrhageHemagglutininsHumansInterleukin-6Interleukin-8Leukocyte ElastaseMaleAdhesins, BacterialCysteine EndopeptidasesGingipain Cysteine EndopeptidasesHemagglutininsInterleukin-6Interleukin-8Leukocyte ElastaseVirulence Factors

Identifiers

PMID21235330
PMCPMC3129431
OpenAlexW2155169733

What OpenQuestion holds

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Read underepoch 390

Registered trials

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.