Genotoxic and cytotoxic effects of a chronic exposure to electromagnetic fields emitted by mobile phones on exfoliated oral epithelial cells should be measured.
45 individuals were divided into three groups according to the amount of time in hours per week that they spend using their mobile phones: a) more than 5 hours, b) 1 - 5 hours, c) less than 1 hour per week.
| Exposure | Parameters |
|---|---|
|
Exposure 1:
850–1,900 MHz
Exposure duration:
> 5 hours mobile phone use per week
|
|
|
Exposure 2:
850–1,900 MHz
Exposure duration:
1-5 hours mobile phone use per week
|
|
|
Exposure 3:
850–1,900 MHz
Exposure duration:
≤ 1 hour mobile phone use per week
|
|
no exposure took place as part of the experimental setup (observational study)
| Frequency | 850–1,900 MHz |
|---|---|
| Type | |
| Exposure duration | > 5 hours mobile phone use per week |
| Exposure source |
|---|
| Measurand | Value | Type | Method | Mass | Remarks |
|---|---|---|---|---|---|
| SAR | 1.38 W/kg | maximum | - | - | of the mobile phones used - according to manufacturer |
| SAR | 0.344 W/kg | minimum | - | - | of the mobile phones used - according to manufacturer |
| Frequency | 850–1,900 MHz |
|---|---|
| Type | |
| Exposure duration | 1-5 hours mobile phone use per week |
| Exposure source |
|---|
| Measurand | Value | Type | Method | Mass | Remarks |
|---|---|---|---|---|---|
| SAR | 1.38 W/kg | maximum | - | - | of the mobile phones used - according to manufacturer |
| SAR | 0.452 W/kg | minimum | - | - | of the mobile phones used - according to manufacturer |
| Frequency | 850–1,900 MHz |
|---|---|
| Type | |
| Exposure duration | ≤ 1 hour mobile phone use per week |
| Exposure source |
|---|
| Measurand | Value | Type | Method | Mass | Remarks |
|---|---|---|---|---|---|
| SAR | 1.22 W/kg | maximum | - | - | of the mobile phones used - according to manufacturer |
| SAR | 0.36 W/kg | minimum | - | - | of the mobile phones used - according to manufacturer |
Neither the occurrence of micronuclei nor the amount of apoptotic and necrotic cells was significantly different between the groups. Only the amount of broken egg structures was significantly higher in group a) compared to groups b) and c). However, the causes and the biological significance of these structures have not been clarified to date.
The authors conclude that their results give no indications of genotoxic or cytotoxic effects by the usage of mobile phones on oral epithelial cells.
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