Evidence map›Paper›PMID 34686817›Full record

SynthesisBritish dental journal2021

Causes of subcutaneous emphysema following dental procedures: a systematic review of cases 1993-2020.

Adam Jones, Sami Stagnell, Tara Renton, Vishal R Aggarwal, Richard Moore

Open access · bronzeAbstract readSystematic Review
PubMed Publisher
In one paragraph

Synthesis in British dental journal, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
1.9field-weighted citation impact, top 13% 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

14 citing papers in PubMed, 23 citations in OpenAlex.

  1. Review
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  6. A Case Report of Facial Swelling and Crepitus Following a Dental Procedure.Journal of education & teaching in emergency medicine · 2025
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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

5 authors at 2 institutions in 1 country.

Adam JonesDepartment of Oral Surgery, University of Leeds, UK. adam.jones7@nhs.net.
Sami StagnellPrimary Care Specialist Oral Surgeon, SmileKind, UK.
Tara RentonDepartment of Oral Surgery, King´s College London, UK.
Vishal R AggarwalSchool of Dentistry, University of Leeds, UK.
Richard MooreDepartment of Oral Surgery, University of Leeds, UK.
University of Leeds · GBKing's College London · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Objectives Causes of subcutaneous emphysema (SE) following dental treatment have changed with new operative techniques and equipment. This review demonstrates the frequency and aetiology of SE to inform prevention strategies for reducing SE occurrences.Methods A systematic search of Medline, Embase and PubMed databases identified 135 cases of SE which met inclusion criteria after independent review by two authors. Trends in frequency and causes of SE were displayed graphically and significant differences in frequency of SE by time period, site and hospital stay were analysed using t-tests.Results Dental extractions often preceded development of SE (54% of cases), commonly surgical extractions. Treatment of posterior mandibular teeth most often resulted in development of SE. Most cases were iatrogenic, with 51% resulting from an air-driven handpiece and 9% from air syringes. Factors such as nose blowing accounted for 10%. There was a significant (p <0.05) increase in cases over time. Mandibular teeth had increased hospital stay time compared to maxillary teeth (p <0.01).Conclusion Increased risks of SE were identified following use of air-driven handpieces during dental extractions and when treating lower molar teeth. Use of air-driven handpieces should be avoided during dental extractions to reduce risks and subsequent morbidity that results from SE.

Indexed as

Subcutaneous EmphysemaTooth ExtractionHumansMolar

Identifiers

PMID34686817
OpenAlexW3206435229

What OpenQuestion holds

Textmetadata
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.