Which early American dentist is credited with developing the principle of extension for prevention?

Question

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G.V.Black developed the principle of "extension for prevention" and standardized rules for cavity preparation and filling.
Robert Woofendale was one of the first dentists to travel throughout the American colonies.
John Baker was one of the dentists who treated George Washington.
Paul Revere is credited with beginning the science of forensic dentistry,by performing the first identification of a corpse based on dental history.

Which Early American Dentist Is Credited with Developing the Principle