8,700 Studies Reviewed. 87.0% Found Biological Effects. The Evidence is Clear.
Shield Your Body

Note: This study found no significant biological effects under its experimental conditions. We include all studies for scientific completeness.

SAR / Device Absorption

Influence of dentures on SAR in the visible Chinese human head voxel phantom exposed to a mobile phone at 900 and 1800 MHz.

No Effects Found

Yu D, Zhang R, Liu Q. · 2012

View Original Abstract
Share:

Metal dental work can more than double cell phone radiation absorption in head tissues, revealing how individual factors affect EMF exposure.

Plain English Summary

Summary written for general audiences

Researchers used computer modeling to study how metal dental work affects radiation absorption from cell phones held against the head. They found that certain types of metal dental crowns can more than double the amount of electromagnetic energy absorbed in nearby tissues when positioned parallel to the phone's antenna. Despite this significant increase, the radiation levels remained within current safety limits set by international health organizations.

Exposure Information

A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 1.80 GHz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 1.80 GHzPower lines50/60 Hz5G mm28 GHzLogarithmic scale

The study examined exposure from: 900 and 1800 MHz

Study Details

To investigate the influence of dentures on electromagnetic energy absorption during the daily use of a mobile phone, a high-resolution head phantom based on the Visible Chinese Human dataset was reconstructed.

Simulations on phantoms with various dentures were performed by using the finite-difference time-dom...

When the metallic dental crowns with resonance lengths of approximately one-third to one-half wavele...

Cite This Study
Yu D, Zhang R, Liu Q. (2012). Influence of dentures on SAR in the visible Chinese human head voxel phantom exposed to a mobile phone at 900 and 1800 MHz. Bioelectromagnetics. 33(6):508-517, 2012.
Show BibTeX
@article{d_2012_influence_of_dentures_on_3499,
  author = {Yu D and Zhang R and Liu Q.},
  title = {Influence of dentures on SAR in the visible Chinese human head voxel phantom exposed to a mobile phone at 900 and 1800 MHz.},
  year = {2012},
  
  url = {https://pubmed.ncbi.nlm.nih.gov/22388567/},
}
PubMed: 22388567

Cited By (7 papers)

Quick Questions About This Study

Yes, metal dental crowns can more than double radiation absorption from cell phones when positioned parallel to the antenna. A 2012 study found up to 121.6% increased absorption in nearby tissues at 900-1800 MHz frequencies, though levels remained within current safety limits.
Dentures with metal components can significantly increase local radiation absorption when aligned with your phone's antenna. However, computer modeling shows that even with this increased absorption, radiation levels stay within international safety guidelines established by IEEE and ICNIRP.
Metal dental work can create resonance effects that increase radiation absorption in surrounding tissues. Research using Chinese head models found certain crown lengths caused the most enhancement, but overall exposure remained compliant with established safety restrictions.
No, it's not dangerous according to current safety standards. While metal crowns can increase local radiation absorption by over 100% in some cases, the 2012 modeling study confirmed that total exposure levels remained within IEEE and ICNIRP safety limits.
No, people with metal dental work don't need to avoid cell phones. Computer simulations show that while metal crowns can increase radiation absorption in nearby tissues, the enhanced levels still comply with international safety guidelines for electromagnetic exposure.