Evidence map›Paper›PMID 25505775›Full record

ArticleJournal of biomedical physics & engineering2014

Design and fabrication of helmholtz coils to study the effects of pulsed electromagnetic fields on the healing process in periodontitis: preliminary animal results.

A Haghnegahdar, H Khosrovpanah, A Andisheh-Tadbir, Gh Mortazavi, M Saeedi Moghadam, Smj Mortazavi, A Zamani, M Haghani, M Shojaei Fard, H Parsaei and 1 more

Abstract read
In one paragraph

Article in Journal of biomedical physics & engineering, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
–field-weighted citation impact
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

15 citing papers in PubMed.

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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

11 authors.

A HaghnegahdarDepartment of Oral and Maxillofacial Radiology, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.
H KhosrovpanahDepartment of Periodontology, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.
A Andisheh-TadbirDepartment of Oral and Maxillofacial Pathology, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.
Gh MortazaviStudent Research Committee, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.
M Saeedi MoghadamIonizing and Non-ionizing Radiation Protection Research Centre (INIRPRC), Shiraz University of Medical Sciences, Shiraz, Iran.
Smj MortazaviIonizing and Non-ionizing Radiation Protection Research Centre (INIRPRC), Shiraz University of Medical Sciences, Shiraz, Iran ; Medical Physics and Medical Engineering Department, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran.
A ZamaniMedical Physics and Medical Engineering Department, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran.
M HaghaniIonizing and Non-ionizing Radiation Protection Research Centre (INIRPRC), Shiraz University of Medical Sciences, Shiraz, Iran.
M Shojaei FardIonizing and Non-ionizing Radiation Protection Research Centre (INIRPRC), Shiraz University of Medical Sciences, Shiraz, Iran.
H ParsaeiMedical Physics and Medical Engineering Department, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran.
O KoohiAnimal laboratory, Shiraz University of Medical Sciences, Shiraz, Iran.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundEffects of electromagnetic fields on healing have been investigated for centuries. Substantial data indicate that exposure to electromagnetic field can lead to enhanced healing in both soft and hard tissues. Helmholtz coils are devices that generate pulsed electromagnetic fields (PEMF). Objective : In this work, a pair of Helmholtz coils for enhancing the healing process in periodontitis was designed and fabricated.

methodAn identical pair of square Helmholtz coils generated the 50 Hz magnetic field.  This device was made up of two parallel coaxial circular coils (100 turns in each loop, wound in series) which were separated from each other by a distance equal to the radius of one coil (12.5 cm). The windings of our Helmholtz coil was made of standard 0.95mm wire to provide the maximum possible current. The coil was powered by a function generator.

resultsThe Helmholtz Coils generated a uniform magnetic field between its coils. The magnetic field strength at the center of the space between two coils was 97.6 μT. Preliminary biological studies performed on rats show that exposure of laboratory animals to pulsed electromagnetic fields enhanced the healing of periodontitis.

conclusionExposure to PEMFs can lead to stimulatory physiological effects on cells and tissues such as enhanced healing of periodontitis.

Indexed as

DesignHealingHelmholtz CoilsNon-ionizing RadiationPeriodontitisProductionPulsed Electromagnetic Fields

Identifiers

PMID25505775
PMCPMC4258865

What OpenQuestion holds

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LicenceCC BY-NC
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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.