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

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Effect of long term 900 MHz radiofrequency radiation on enamel microhardness of rat's teeth.

No Effects Found

Dasdag S, Yavuz I1, Bakkal M, Kargul B. · 2014

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Ten months of cell phone radiation exposure didn't weaken rat tooth enamel, but oral health effects remain understudied.

Plain English Summary

Summary written for general audiences

Turkish researchers exposed rats to cell phone radiation (900 MHz) for 2 hours daily over 10 months to see if it would weaken tooth enamel. They found no changes in the hardness of the rats' tooth enamel compared to unexposed control animals. This suggests that typical cell phone use may not directly damage the structural integrity of teeth.

Why This Matters

While this study found no effects on tooth enamel hardness, it represents just one narrow measure of potential oral health impacts from RF radiation. The reality is that your mouth and jaw area receive significant radiation exposure during phone calls, yet research on oral tissues remains surprisingly limited. What this means for you is that while your tooth enamel appears resilient to RF exposure, this single study doesn't address other potential effects on oral tissues like salivary glands, which have shown changes in other research. The science demonstrates we need much more comprehensive investigation of how RF radiation affects the various tissues in your head and neck region during typical phone use.

Exposure Information

A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 900 MHz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 900 MHzPower lines50/60 Hz5G mm28 GHzLogarithmic scale

Specific exposure levels were not quantified in this study. The study examined exposure from: 900 MHz Duration: 2 h per day (7 days in a week) for 10 months

Study Details

we aimed to investigate the effect of Radio Frequency (RF) radiation emitted from 900 MHz mobile phones on the enamel micro hardness of rat teeth.

The study was carried out on twenty one Wistar Albino adult male rats which were divided into two gr...

The results of this study showed that 900 MHz RF radiation did not alter the enamel micro hardness o...

Exposure of 900 MHz RF radiation for 2 hours per day during ten months does not alter enamel micro hardness of rats' teeth. However, further studies are necessary to clarify this topic.

Cite This Study
Dasdag S, Yavuz I1, Bakkal M, Kargul B. (2014). Effect of long term 900 MHz radiofrequency radiation on enamel microhardness of rat's teeth. Oral Health Dent Manag. 13(3):749-752, 2014.
Show BibTeX
@article{s_2014_effect_of_long_term_2995,
  author = {Dasdag S and Yavuz I1 and Bakkal M and Kargul B.},
  title = {Effect of long term 900 MHz radiofrequency radiation on enamel microhardness of rat's teeth.},
  year = {2014},
  
  url = {https://pubmed.ncbi.nlm.nih.gov/25284551/},
}
PubMed: 25284551

Cited By (11 papers)

Quick Questions About This Study

A 2014 Turkish study found no evidence that cell phone radiation damages tooth enamel. Researchers exposed rats to 900 MHz radiation for 2 hours daily over 10 months and found no changes in enamel hardness compared to unexposed animals.
Research suggests 900 MHz radiation doesn't harm teeth directly. A long-term study exposing rats to this frequency for 10 months showed no weakening of tooth enamel, indicating typical cell phone use may not damage dental structure.
Current research indicates phone radiation doesn't significantly impact dental health. A 2014 study found that prolonged exposure to cell phone frequencies caused no measurable changes in tooth enamel strength in laboratory animals.
Based on available research, tooth damage risks from cell phones appear minimal. A controlled study found no enamel weakening after 10 months of daily radiation exposure, though researchers note more studies are needed.
Research shows radiofrequency radiation at cell phone levels doesn't appear to impact tooth structure. A study measuring enamel hardness after extended 900 MHz exposure found no structural changes in dental tissue.