
Dentistry is not an exact science
- Dentistry is an art form, and every dentist develops their personally unique way of "practicing" dentistry. For me, my personal conception of the practice of dentistry began when I was 14 years old and working as a part time dental assistant. At this time, in the early 60's, the technology of mixing mercury/silver, amalgam fillings was to add the liquid mercury from a dispensing vial to the powdered metal phase and to then mix the two components in an "amalgamator" device to incorporate the mercury into a mixture, or amalgamation, with the other metals. The resulting proportions were approximately 50% mercury, 30% silver, and the rest varying percentages of zinc, copper, and tin. (similar percentages as modern day amalgams) The amalgam was then squeezed by the assistant in a cotton "squeeze cloth" to express the excess mercury from the mix (no gloves were used in 1962) into a jar to be stored in a "safe place". Invariably, some mercury would be spilled onto the counter top. In the process of wiping the mercury globules across the table top into the jar, I would play with the globules, separating and recombining them, although the dentist I worked for would tell me not to touch the mercury.
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