Evidence map›Paper›PMID 34839734›Full record

SynthesisJournal of orthodontics2022

Microbial colonisation associated with conventional and self-ligating brackets: a systematic review.

Nidhi P Parmar, Gabrielle L Thompson, Nikki E Atack, Anthony J Ireland, Martyn Sherriff, Jennifer A Haworth

Open access · hybridAbstract readSystematic Review
In one paragraph

Synthesis in Journal of orthodontics, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed, 1 pooled it
0.7field-weighted citation impact, top 23% 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

3 citing papers in PubMed, 1 synthesis or guideline pooled it, 6 citations in OpenAlex.

  1. Pooled it
  2. Oral Prevalence ofPathogens (Basel, Switzerland) · 2024
    Article
  3. PerceptionRevista cientifica odontologica (Universidad Cientifica del Sur)
    Article
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 1 institution in 1 country.

Nidhi P ParmarBristol Dental School, University of Bristol, Bristol, UK.
Gabrielle L ThompsonBristol Dental School, University of Bristol, Bristol, UK.
Nikki E AtackBristol Dental School, University of Bristol, Bristol, UK.
Anthony J IrelandBristol Dental School, University of Bristol, Bristol, UK.
Martyn SherriffBristol Dental School, University of Bristol, Bristol, UK.
Jennifer A HaworthBristol Dental School, University of Bristol, Bristol, UK.ORCID 0000-0002-3096-6717
University Of Bristol Dental Hospital · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundDecalcification and gingivitis caused by plaque accumulation around brackets are common iatrogenic effects of fixed appliances. The influence of conventional versus self-ligating bracket design on microbial colonisation is unknown.

objectiveTo assess the levels of microbial colonisation associated with conventional and self-ligating brackets. SEARCH SOURCES: Three databases were searched for publications from 2009 to 2021. DATA SELECTION: Randomised controlled trials comparing levels of microbial colonisation before and during treatment with conventional and self-ligating brackets were assessed independently and in duplicate. DATA EXTRACTION: Data were extracted independently by two authors from the studies that fulfilled the inclusion criteria. Risk of bias assessments were made using the revised Cochrane risk of bias tool for randomized trials. The quality of the included studies was assessed using the Critical Appraisal Skills Programme Checklist.

resultsA total of 11 randomised controlled trials were included in this systematic review. Six of the studies were found to be at low risk of bias and five presented with some concerns. The studies were considered moderate to high quality. Five trials reported no statistically significant difference in microbial colonisation between bracket types. The remaining studies showed mixed results, with some reporting increased colonisation of conventional brackets and others increased colonisation of self-ligating brackets. The heterogeneity of study methods and outcomes precluded meta-analysis.

conclusionOf the 11 studies included in this systematic review, five found no differences in colonisation between conventional and self-ligating brackets. The remaining studies showed mixed results. The evidence is inconclusive regarding the association between bracket design and levels of microbial colonisation.

Indexed as

Dental PlaqueOrthodontic BracketsHumansOrthodontic Appliance DesignOrthodontic Wiresconventional bracketfixed orthodontic appliancemicrobial colonisationrandomised controlled trialself-ligating bracketsystematic review

Identifiers

PMID34839734
PMCPMC9160783
OpenAlexW3215213012

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.