Evidence map›Paper›PMID 33578659›Full record

ReviewAntioxidants (Basel, Switzerland)2021

Effectiveness of Propolis in the Treatment of Periodontal Disease: Updated Systematic Review with Meta-Analysis.

Nansi López-Valverde, Beatriz Pardal-Peláez, Antonio López-Valverde, Javier Flores-Fraile, Silvia Herrero-Hernández, Bruno Macedo-de-Sousa, Julio Herrero-Payo, Juan Manuel Ramírez

Open access · goldAbstract readReview
In one paragraph

Review in Antioxidants (Basel, Switzerland), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed, 2 pooled it
7.1field-weighted citation impact, top 3% 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

25 citing papers in PubMed, 2 syntheses or guidelines pooled it, 50 citations in OpenAlex.

  1. Pooled it
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  6. Article
  7. Review
  8. Anti-Inflammatory, Antioxidant, and Reparative Effects ofAntioxidants (Basel, Switzerland) · 2025
    Article
  9. Article
  10. Article
  11. Review
  12. Cariostatic Agents: From Silver Diamine Fluoride to Emerging Bioactive Compounds.Clinical, cosmetic and investigational dentistry · 2025
    Review
  13. Article
  14. Review
  15. Review
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  18. 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

8 authors at 3 institutions in 2 countries.

Nansi López-ValverdeDepartment of Surgery, Instituto de Investigación Biomédica de Salamanca (IBSAL), University of Salamanca, 37007 Salamanca, Spain.ORCID 0000-0002-4168-3085
Beatriz Pardal-PeláezDepartment of Surgery, Instituto de Investigación Biomédica de Salamanca (IBSAL), University of Salamanca, 37007 Salamanca, Spain.ORCID 0000-0001-5608-7924
Antonio López-ValverdeDepartment of Surgery, Instituto de Investigación Biomédica de Salamanca (IBSAL), University of Salamanca, 37007 Salamanca, Spain.ORCID 0000-0003-4784-1870
Javier Flores-FraileDepartment of Surgery, Instituto de Investigación Biomédica de Salamanca (IBSAL), University of Salamanca, 37007 Salamanca, Spain.ORCID 0000-0003-1338-0551
Silvia Herrero-HernándezDepartment of Surgery, Instituto de Investigación Biomédica de Salamanca (IBSAL), University of Salamanca, 37007 Salamanca, Spain.ORCID 0000-0001-7583-8367
Bruno Macedo-de-SousaPolo I-Edifício Central Rua Larga, Institute for Occlusion and Orofacial Pain Faculty of Medicine, University of Coimbra, 3004-504 Coimbra, Portugal.ORCID 0000-0001-7833-4607
Julio Herrero-PayoDepartment of Surgery, Instituto de Investigación Biomédica de Salamanca (IBSAL), University of Salamanca, 37007 Salamanca, Spain.
Juan Manuel RamírezDepartment of Morphological Sciences, University of Cordoba, Avenida Menéndez Pidal s/n, 14071 Cordoba, Spain.
Universidad de Salamanca · ESUniversity of Coimbra · PTUniversity of Córdoba · ES

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

In recent times, the use of natural products has gained momentum, either as a treatment or as adjuvants for other drugs in the treatment of different conditions. Propolis is a natural substance produced by bees which has proven useful for treating periodontal disease. This systematic review and meta-analysis gather evidence of the effectiveness of propolis in this kind of condition. The MEDLINE, CENTRAL, PubMed, EMBASE and Web of Science databases were searched for scientific articles to identify the findings published up to October 2020. The MeSH phrases used in the search were: "periodontal diseases AND propolis treatment"; "gingivitis AND propolis treatment"; "periodontitis AND propolis treatment"; "propolis treatment AND oral health"; "propolis AND oxidative stress AND periodontitis". The Boolean operator "AND" was used to combine the searches. Randomized trials where propolis was used in the treatment of different periodontal conditions were included. Non-randomized clinical studies were systematically reviewed and 224 studies were detected, eight of which met the criteria for inclusion in the meta-analysis. Only three of these were selected for quantitative synthesis. In conclusion, propolis is safe to use and can improve the results of periodontal disease treatment, reducing probing pocket depth compared with treatment with a placebo (difference in means, fixed effects -0.67 [95% CI: -0.84, -0.50]).

Indexed as

gingivitisoral healthoxidative stressperiodontal disease/periodontitispropolis

Identifiers

PMID33578659
PMCPMC7916329
OpenAlexW3128505941

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.