at 17 Park Place in New York City, on August 10, 1840, Chapin A. Harris in a motion that "resolved that a National Society be formed."
Before 1861 dentists were participant in both the ADC and the ADA, which promoted education and research in all aspects of dentistry, including dental materials and remained active throughout the American Civil War (1861—1865).
No legal standards or requirements as to the type of training necessary for practitioners existed to protect patients.
"At that time there were only about three hundred trained and scientific dentists in the entire country; the rest were relatively untrained operators, outright quacks, or charlatans".
Conventional (or gamma2)-amalgams have 32% silver and 14% tin, and they are most susceptible to corrosion due to their low copper content.
Amalgam is the dental material that has the strongest tendency to create galvanic currents and high electric potentials as it ages.
[citation needed] The rate of mercury release with the corrosion is accelerated when the amalgam filling is in contact with old restorations or coupled with gold artifacts present in the mouth.
Among these, following in the footsteps of Pierre Fauchard the "father of modem dentistry", were some of the profession's immortals, including Chapin A. Harris, Horace H. Hayden, Solyman Brown, and Eleazar Parmly.