The five letters presented here were all written towards the end of 1992.
They represent one person's efforts to explain why mercury amalgam dental fillings appear to generate electrical potentials, and they bring into question whether or not mercury amalgam is a suitable material for use in dentistry in respect of its electrical behaviour.
Letter 1 (Galvani's Frog's Leg)
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A list of people who received some or all of these letters is shown below:
Dr Jack Levenson - Brompton Dental Clinic, London
Dr David Brown - Dental Materials Scientist
Peter Cole - Dentist, 279 King's Road, Fulham, London
Tim Radford - Science Editor, The London Guardian
Elisabeth Geake - Reporter, New Scientist
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And here is a sample of replies:
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