The Effect of Pulsed Electromagnetic Fields on Microleakage of Amalgam Restorations: An in Vitro Study

lranian journal of Clinical Infectious Diseases

Shoaleh Shahidi³  Ghazal Mortazavi¹  Maryam Paknahad³  Seyed Mohammad Javad Mortazavi¹  Mahdi Saeedi Moghadam¹  Ali Dehghani Nazhvani² 

[1] Ionizing and Non-Ionizing Radiation Protection Research Center (INIRPRC), Shiraz University of Medical Sciences, Shiraz, IR Iran;Biomaterial Research Center, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, IR Iran;Prevention of Oral and Dental Disease Research Center, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, IR Iran

关键词: Pulsed Electromagnetic Fields;    Amalgam;    Microleakage;    Helmholtz Coils;   

DOI  :  10.17795/semj32329

学科分类：基础医学

来源: Shiraz University of Medical Sciences

【 摘 要 】

Background:Previousstudieshavereportedanincreaseinthemercuryreleasefromdentalamalgamrestorations,followingexposuretoelectromagneticfieldsgeneratedbysourcessuchasmobilephonesandmagneticresonanceimaging(MRI).IthasalsobeenshownthatMRIincreasesmicroleakageofamalgamrestorations.Inthisstudy,Helmholtzcoilsareusedforgeneratingpulsedelectromagneticfields(PEMF).Objectives:ThepurposeofthisstudywastoevaluatetheeffectofPEMFsonmicroleakageofamalgamrestorations,usingapairofHelmholtzcoils.PatientsandMethods:StandardizedclassVcavitieswerepreparedonthefacialsurfacesof46non-cariousextractedhumanpremolars.Then,thesampleswererandomlydividedintoexperimentalandcontrolgroups,eachcontaining23teeth.Theexperimentalgroupwasexposedtotheuniformmagneticfieldsgeneratedbyapairhelmholtzcoils.Themagneticfieldstrengthatthecentralpointofthetwocoilswas0.1mT.Allspecimenswereplacedin2%basicfuchsinsolution.Thentheteethweresectioned,examinedunderastereomicroscope,andscoredformicroleakageaccordingtothedegreeofdyepenetration.Results:Therewasnosignificantdifferencebetweenthetwogroupsregardingthemicroleakagescore.Conclusions:TheresultsofthepresentstudysuggestthatPEMFexposuredoesnothaveadverseeffectsonmicroleakageofamalgamrestorations.

【 授权许可】

Unknown