An electrical charge that is created when two dissimilar metals come into contact. The
sensation is most frequently experienced when a new amalgam filling has been placed
in a tooth which comes into contact with a gold restoration. Silver paper or a fork
coming into contact with an amalgam filling may cause an electric "shock" or a
metallic taste. In severe cases, the filling may have to be replaced with a "white" nonmetallic
By use of injection or gas to render a patient unconscious in order to carry out a
The NHS and the General Dental Council actively discourage GA in general dental
practice in favour of hospital facilities.
A tooth germ or follicle can become split or divided during its development which can
give rise to the formation of an "identical twin" or supplemental tooth. This may be
related to a genetic or inherited defect.
Tooth coloured filling material made from glass. It can be used in small shallow cavities but it generally has poor strength. It is very useful in children’s teeth and can leach fluoride, which helps prevent further decay. It is sometimes used with dental composite to help the sealing of the tooth. Like composite it is very sensitive to moisture before it has set.