There was also an association between using all four
types of technology before bed and
increased cell
phone use at night, such as waking up to text someone, with watching TV resulting in the highest odds.
The World Health Organization (WHO) estimates that the typical absorbed dose of mercury from amalgams is one to twenty - two micrograms per day, with most values in the range of one to five micrograms per day.16 Various factors, including gum chewing and bruxism, can
increase these exposures to an upper range of about one hundred micrograms per day.7 Preliminary evidence also suggests that certain
types of electromagnetic radiation, including EMR from mobile
phones and from magnetic resonance imaging (MRI) may
increase the release of mercury vapor from dental amalgams.17