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The effects of a chronic exposure of the head of rats to a 900 MHz electromagnetic field on the content of some trace elements in teeth should be investigated.
The authors examined teeth because of their close proximity to a cell phone during a call. 31 rats were divided into the following three groups: 1) exposure (n=14), 2) sham exposure (n=7) and 3) cage control (n=10). Subsequent to the exposure, all rats were anesthetized and teeth were removed and examined.
|ばく露時間||repeated daily exposure of 2 h for 10 months|
|Distance between exposed object and exposure source||1.5 cm|
|チャンバの詳細||rats were placed in a Plexiglas tube carousel with single chambers for each rat|
|ばく露装置の詳細||rats were oriented headwards to the antenna of the GSM generator in the middle|
|Sham exposure||A sham exposure was conducted.|
The concentrations of calcium and phosphorus did not show any significant differences in the exposure group compared to sham exposure and cage control, whereas the concentration of magnesium was significantly reduced and the concentration of zinc was significantly increased. No significant differences were observed between sham exposure and cage control.
The authors conclude that a chronic exposure of the head of rats to a 900 MHz electromagnetic field can change the content of some trace elements in teeth and that further studies should investigate this topic.