Journal of Biomedical Physics and Engineering

Current Issue

By Issue

By Author

By Subject

Author Index

Keyword Index

About Journal

Aims and Scope

Staff Members

Editorial Board

Publication Ethics

Indexing and Abstracting

Related Links

FAQ

Peer Review Process

News

Synergistic Effect of Radiofrequency Electromagnetic Fields of Dental Light Cure Devices and Mobile Phones Accelerates the Microleakage of Amalgam Restorations: An in vitro Study

Document Type : Original Article

Authors

1 Ionizing and Non-ionizing Radiation Protection Research Center, Shiraz University of Medical Sciences, Shiraz, Iran

2 Medical Physics and Medical Engineering Department, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran

3 Biomaterial Research Center, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, IR Iran

4 Oral and Maxillofacial Pathology Department, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, IR Iran

5 Oral and Dental Disease Research Center, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, IR Iran

6 Department of Oral and Maxillofacial Radiology, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, IR Iran

Abstract

Background: Previous studies have shown that exposure to electromagnetic fields produced by magnetic resonance imaging or mobile phones can lead to increased microleakage of dental amalgam.
Objective: The aim of the present study was to investigate the effect of electromagnetic field of a commercial dental light cure device and a common GSM mobile phone on microleakage of amalgam restorations.
Materials and Methods: Identical class V cavities were prepared on the buccal surfaces of 60 non-carious extracted human teeth. The samples were randomly divided into 4 groups of 20 samples each. The samples in the first group were not exposed to electromagnetic fields, while the second and the third groups were exposed to electromagnetic fields produced by a commercial light cure device, or mobile phone radiation (60 min), respectively. The fourth group was exposed to electromagnetic radiations emitted by both mobile phone for 60 min and light cure device. Then, teeth samples were scored for microleakage according to a standard dye penetration protocol by examination under a stereomicroscope.
Results: The mean score of microleakage in the fourth group (light cure + mobile phone) was significantly higher than that of the control group (P =0.030). Moreover, the scores of microleakage in this group were significantly higher than that of the second group (light cure only) (P= 0.043).
Conclusion: Exposure of amalgam restorations to electromagnetic fields produced by both light cure devices and mobile phones can synergistically increase the microleakage of amalgam restorations.

Keywords

References
  1. Bembi S, Bembi NN, Sood A, Gambhir A. To Evaluate the Effect of Different Adhesive Materials on the Microleakage of Bonded Amalgam Restorations: An in vitro Study. Int J Clin Pediatr Dent. 2012;5:185-9. doi.org/10.5005/jp-journals-10005-1163. PubMed PMID: 25206165. PubMed PMCID: 4155881.
  2. Opdam NJ, Bronkhorst EM, Loomans BA, Huysmans MC. 12-year survival of composite vs. amalgam restorations. J Dent Res. 2010;89:1063-7. doi.org/10.1177/0022034510376071. PubMed PMID: 20660797.
  3. Mitchell RJ, Koike M, Okabe T. Posterior amalgam restorations--usage, regulation, and longevity. Dent Clin North Am. 2007;51:573-89. doi.org/10.1016/j.cden.2007.04.004. PubMed PMID: 17586144.
  4. Cenci MS, Piva E, Potrich F, Formolo E, Demarco FF, Powers JM. Microleakage in bonded amalgam restorations using different adhesive materials. Braz Dent J. 2004;15:13-8. doi.org/10.1590/S0103-64402004000100003. PubMed PMID: 15322639.
  5. Morrow LA, Wilson NH, Setcos JC, Watts DC. Microleakage of amalgam cavity treatment systems: an in vitro evaluation. Am J Dent. 2002;15:262-7. PubMed PMID: 12572646.
  6. Burgess JO, Walker R, Davidson JM. Posterior resin-based composite: review of the literature. Pediatr Dent. 2002;24:465-79. PubMed PMID: 12412962.
  7. Mortazavi SM, Motamedifar M, Namdari G, Taheri M, Mortazavi AR, Shokrpour N. Non-linear adaptive phenomena which decrease the risk of infection after pre-exposure to radiofrequency radiation. Dose Response. 2014;12:233-45. doi.org/10.2203/dose-response.12-055.Mortazavi. PubMed PMID: 24910582. PubMed PMCID: 4036396.
  8. Mortazavi SM, Taeb S, Dehghan N. Alterations of visual reaction time and short term memory in military radar personnel. Iran J Public Health. 2013;42:428-35. PubMed PMID: 23785684. PubMed PMCID: 3684731.
  9. Mortazavi SM, Rouintan MS, Taeb S, Dehghan N, Ghaffarpanah AA, Sadeghi Z, et al. Human short-term exposure to electromagnetic fields emitted by mobile phones decreases computer-assisted visual reaction time. Acta Neurol Belg. 2012;112:171-5. doi.org/10.1007/s13760-012-0044-y. PubMed PMID: 22426673.
  10. Mortazavi S, Mosleh-Shirazi M, Tavassoli A, Taheri M, Mehdizadeh A, Namazi S, et al. Increased Radioresistance to Lethal Doses of Gamma Rays in Mice and Rats after Exposure to Microwave Radiation Emitted by a GSM Mobile Phone Simulator. Dose Response. 2013;11:281-92. doi.org/10.2203/dose-response.12-010.Mortazavi. PubMed PMID: 23930107. PubMed PMCID: 3682203.
  11. Mortazavi S, Mosleh-Shirazi M, Tavassoli A, Taheri M, Bagheri Z, Ghalandari R, et al. A comparative study on the increased radioresistance to lethal doses of gamma rays after exposure to microwave radiation and oral intake of flaxseed oil. Iranian Journal of Radiation Research. 2011;9:9-14.
  12. Mortavazi S, Habib A, Ganj-Karami A, Samimi-Doost R, Pour-Abedi A, Babaie A. Alterations in TSH and Thyroid Hormones following Mobile Phone Use. Oman Med J. 2009;24:274-8. doi.org/10.5001/omj.2009.56. PubMed PMID: 22216380. PubMed PMCID: 3243874.
  13. Mortazavi SM, Daiee E, Yazdi A, Khiabani K, Kavousi A, Vazirinejad R, et al. Mercury release from dental amalgam restorations after magnetic resonance imaging and following mobile phone use. Pak J Biol Sci. 2008;11:1142-6. doi.org/10.3923/pjbs.2008.1142.1146. PubMed PMID: 18819554.
  14. Mortazavi SM, Ahmadi J, Shariati M. Prevalence of subjective poor health symptoms associated with exposure to electromagnetic fields among university students. Bioelectromagnetics. 2007;28:326-30. doi.org/10.1002/bem.20305. PubMed PMID: 17330851.
  15. Mortazavi S, Motamedifar M, Namdari G, Taheri M, Mortazavi A. Counterbalancing immunosuppression-induced infections during long-term stay of humans in space. Journal of Medical Hypotheses and Ideas. 2013;7:8-10. doi.org/10.1016/j.jmhi.2012.12.001.
  16. Mortazavi S. Safety issue of mobile phone base stations. J Biomed Phys Eng. 2013;3:1-2.
  17. Mortazavi S, Parsanezhad M, Kazempour M, Ghahramani P, Mortazavi A, Davari M. Male reproductive health under threat: Short term exposure to radiofrequency radiations emitted by common mobile jammers. J Hum Reprod Sci. 2013;6:124-8. doi.org/10.4103/0974-1208.117178. PubMed PMID: 24082653. PubMed PMCID: 3778601.
  18. Rafati A, Rahimi S, Talebi A, Soleimani A, Haghani M, Mortazavi SM. Exposure to Radiofrequency Radiation Emitted from Common Mobile Phone Jammers Alters the Pattern of Muscle Contractions: an Animal Model Study. J Biomed Phys Eng. 2015;5:133-42. PubMed PMID: 26396969. PubMed PMCID: 4576874.
  19. Shekoohi Shooli F, Mortazavi SA, Jarideh S, Nematollahii S, Yousefi F, Haghani M, et al. Short-Term Exposure to Electromagnetic Fields Generated by Mobile Phone Jammers Decreases the Fasting Blood Sugar in Adult Male Rats. J Biomed Phys Eng. 2016;6:27-32. PubMed PMID: 27026952. PubMed PMCID: 4795326.
  20. Mortazavi SMJ, Tavassoli A, Ranjbari F, Moammaiee P. Effects of laptop computers’ electromagnetic field on sperm quality. Journal of Reproduction & Infertility. 2010;11(4).
  21. Mortazavi SM, Vazife-Doost S, Yaghooti M, Mehdizadeh S, Rajaie-Far A. Occupational exposure of dentists to electromagnetic fields produced by magnetostrictive cavitrons alters the serum cortisol level. J Nat Sci Biol Med. 2012;3:60-4. doi.org/10.4103/0976-9668.95958. PubMed PMID: 22690053. PubMed PMCID: 3361780.
  22. Mortazavi SM, Neghab M, Anoosheh SM, Bahaeddini N, Mortazavi G, Neghab P, et al. High-field MRI and mercury release from dental amalgam fillings. Int J Occup Environ Med. 2014;5:101-5. PubMed PMID: 24748001.
  23. Mortazavi SM, Daiee E, Yazdi A, Khiabani K, Kavousi A, Vazirinejad R, et al. Mercury release from dental amalgam restorations after magnetic resonance imaging and following mobile phone use. Pak J Biol Sci. 2008;11:1142-6. doi.org/10.3923/pjbs.2008.1142.1146. PubMed PMID: 18819554.
  24. Mahmoudi R, Mortazavi S, Safari S, Nikseresht M, Mozdarani H, Jafari M, et al. Effects of microwave electromagnetic radiations emitted from common Wi-Fi routers on rats’ sperm count and motility. Int J Radiat Res. 2015;13:363-8.
  25. Paknahad M, Mortazavi SM, Shahidi S, Mortazavi G, Haghani M. Effect of radiofrequency radiation from Wi-Fi devices on mercury release from amalgam restorations. J Environ Health Sci Eng. 2016;14:12. doi.org/10.1186/s40201-016-0253-z. PubMed PMID: 27418965. PubMed PMCID: 4944481.
  26. Haghnegahdar A, Khosrovpanah H, Andisheh-Tadbir A, Mortazavi G, Saeedi Moghadam M, Mortazavi S, et al. Design and fabrication of helmholtz coils to study the effects of pulsed electromagnetic fields on the healing process in periodontitis: preliminary animal results. J Biomed Phys Eng. 2014;4:83-90. PubMed PMID: 25505775. PubMed PMCID: 4258865.
  27. Paknahad M, Shahidi S, Mortazavi SMJ, Mortazavi G, Moghadam MS, Nazhvani AD. The Effect of Pulsed Electromagnetic Fields on Microleakage of Amalgam Restorations: An in Vitro Study. Shiraz E-Medical Journal. 2016;17(2).
  28. Shahidi SH, Bronoosh P, Alavi AA, Zamiri B, Sadeghi AR, Bagheri MH, et al. Effect of magnetic resonance imaging on microleakage of amalgam restorations: an in vitro study. Dentomaxillofac Radiol. 2009;38:470-4. doi.org/10.1259/dmfr/30077669. PubMed PMID: 19767518.
  29. Yilmaz S, Misirlioglu M. The effect of 3 T MRI on microleakage of amalgam restorations. Dentomaxillofac Radiol. 2013;42:20130072. doi.org/10.1259/dmfr.20130072. PubMed PMID: 23674614. PubMed PMCID: 3756742.
  30. Mortazavi SM, Paknahad M. Effect of magnetic resonance imaging on microleakage of amalgam restorations: an in vitro study. Dentomaxillofac Radiol. 2016;45:20150187. doi.org/10.1259/dmfr.20150187. PubMed PMID: 26224142.
  31. Akgun OM, Polat GG, Turan Illca A, Yildirim C, Demir P, Basak F. Does magnetic resonance imaging affect the microleakage of amalgam restorations? Iran J Radiol. 2014;11:e15565. PubMed PMID: 25763074. PubMed PMCID: 4341166.
  32. Paknahad M, Nazhvani AD, Jarideh S, Mozdarani H, Mortazavi G, Haghani M, et al. Increased Mercury release due to exposure to electromagnetic radiation as a limiting factor for using dental amalgam. Int J Radiat Res. 2016;14:355-9.
Journal of Biomedical Physics and Engineering
Volume 9, Issue 2 - Serial Number 2
32
March and April 2019
Pages 227-232
Files
Share
How to cite
Statistics