Evidence map›Paper›PMID 33737989›Full record

ReviewThe Japanese dental science review2021

Impact of Green Tea (

Marta Mazur, Artnora Ndokaj, Maciej Jedlinski, Roman Ardan, Sabina Bietolini, Livia Ottolenghi

Open access · goldAbstract readReview
PubMed Full text at PMC Publisher
In one paragraph

Review in The Japanese dental science review, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed, 3 pooled it
5.8field-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

32 citing papers in PubMed, 3 syntheses or guidelines pooled it, 48 citations in OpenAlex.

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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 2 countries.

Marta MazurDepartment of Oral and Maxillofacial Sciences, Sapienza University of Rome, Via Caserta 6, 00161 Rome, Italy.
Artnora NdokajDepartment of Oral and Maxillofacial Sciences, Sapienza University of Rome, Via Caserta 6, 00161 Rome, Italy.
Maciej JedlinskiDepartment of Interdisciplinary Dentistry, Pomeranian Medical University, Al.Powstancow Wielkopolskich 72, 70111 Szczecin, Poland.
Roman ArdanDepartment of Economic Sciences, Koszalin University of Technology, 75-343 Koszalin, Poland.
Sabina BietoliniMedical Area - Unicusano University, Rome, Italy.
Livia OttolenghiDepartment of Oral and Maxillofacial Sciences, Sapienza University of Rome, Via Caserta 6, 00161 Rome, Italy.
Sapienza University of Rome · ITKoszalin University of Technology · PLPomeranian Medical University · PL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe oral health-promoting effects of green tea are attributed to its polyphenol components. Aim of this work was to systematically review the literature in search for clinical trials assessing green tea for managing periodontitis and caries.

methodsRandomized clinical trials comparing the efficacy of green tea versus control groups in oral hygiene and gingival health; periodontitis; caries; periodontal pathogens number;

resultsGreen tea treatment had medium positive effect size in reducing GI (SMD: 0.50; 95%CI: -0.02/1.01); PI (SMD: 0.54; 95%CI: 0.14/0.95); GBI (SMD: 0.58; 95%CI: -0.41/1.56) and BOP (SMD: 0.52; 95%CI: -0.57/1.60) in respect to the control group. Splitting to subgroups, green tea showed a small negative effect in the chlorhexidine control groups. Green tea treatment had medium positive effect size in reducing CAL (SMD 0.58; 95%CI: -0.49/1.65) and large positive effect size in reducing PPD (SMD:1.02; 95%CI: 0.45/1.59).

conclusionEven if the results are encouraging, there is insufficient evidence to recommend the use of green tea formulation as first choice treatment for gingivitis, periodontitis and caries.

Indexed as

CariesEvidence-based dentistryGingivitisMeta-analysisPeriodontitisPlaque controlSystematic review

Identifiers

PMID33737989
PMCPMC7946350
OpenAlexW3136083015

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.