Images Dated 30th July 2002

Extracted molar showing 3 amalgam fillings

Macrophotograph of an extracted molar (male, upper, number 7), a top view showing three 20 year old amalgam fillings. The filling is a powdered alloy consisting of silver, tin, copper & zinc mixed with mercury. The decayed area is removed & the cavity lined with a white filler, protecting the base from the effects of the filling itself. The source of tooth decay (dental caries), is complex. It is linked to the build up of plaque, a mixture of saliva, bacteria & carbohydrate on the tooth's surface. Acid produced during the breakdown of carbohydrates by the bacterium Streptoccocus etches into the enamel & deeper if not treated. Magnification: X1.6 (at 35mm size)

© DR JEREMY BURGESS/SCIENCE PHOTO LIBRARY

Formula One World Championship: Ron Dennis, right, and Mercedes Sporting Director Norbert Haug hold a press conference to announce that Mika

Ron Dennis (GBR), right, and Mercedes Sporting Director Norbert Haug (GER) hold a press conference to announce that Mika Hakkinen (FIN) has retired from F1 and next years driver line up of David Coulthard (GBR), Kimi Raikkonen (FIN) and test driver Alex Wurz (AUT) will remain unchanged.
German Grand Prix, Rd12, Hockenheim, Germany. 28 July 2002.
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Formula One World Championship: Allan McNish talks to Toyota Race Engineer Dieter Gass

(L-R) Allan McNish (GBR) talks to Toyota Race Engineer Dieter Gass (GER).
Formula One World Championship, Rd12, German Grand Prix, Hockenheim, Germany. 28 July 2002.
ADDITIONAL IMAGE

© Sutton Motorsport Images