Electromagnetic radiation EMR is energy in waves emitted from a source. This energy is both electric and magnetic. Electromagnetic radiation from a source penetrates the surrounding area, creating an electromagnetic field EMF. It affects the behavior of objects in the vicinity of the field. This includes the amalgam fillings in particular and other metal restorations and components of prosthesis and appliances and the dental implants. Even humans beings are store house of different bio-electrical fields.
How your electric toothbrush can DESTROY your teeth
Problems Caused by Dental Fillings - Perfect Smile
Immediate reports of Post-Operative Sensitivity POS reported after restoring teeth with direct composite resin restoration is a perplexing issue experienced by most dentists. In most studies on POS, the three most commonly cited reasons are: polymerization shrinkage of the resin, microleakage around the margins of the restoration and build-up of residual stress in the fabric of the tooth after placement of direct composite restoration. Knowledge gained by this review points towards soft start mode of polymerization using low light-cure intensities may help to reduce polymerization shrinkage and possibly postoperative sensitivity. Immediate reports of Postoperative sensitivity POS reported after restoring teeth with direct composite resin restoration  is a baffling issue experienced by most dentists. At-least five to twenty six percent patients report POS immediately after composite resin restoration1. Sensitivity is mostly elicited at the margins of the restorations and sometimes at the center of the restoration inspite of dealing with the occlusal interferences. Composite resins are irritant to the pulp and should be bonded carefully along with additional use of liner, desensitizing agents and resin modified glass ionomers [2,3] where necessary, especially in deep dentinal cavities so as to prevent postoperative sensitivity and subsequently pulp death; as total etch bonding systems may cause detrimental effects on the pulp .
There are two types of people. The other group gets a painful electric zing from chewing on foil. Why does chewing on foil hurt some people and not others?
By Lauren Libbert for the Daily Mail. Every time Natasha Vigille sips a glass of cold water, she winces in agony. For Natasha, like millions, loved the fresh, smooth feeling a blast with a powerful electric toothbrush gave her.