The person that I admire is Greene Vardiman Black.
He is known as one of the founders of modern Odontology in the world.
He was born in Winchester, Illinois on August 3, 1836; your parents were William and Mary Black. He grew up on a farm and since little he developed an interested in the natural world. When he was 17 years old, he began studying medicine with the help of his brother. Then he met to Dr. Speer, who taught him the practice of dentistry. Later he relocated to Jacksonville, Illinois and it was here that he began a successful career and research in the underdeveloped field of dentistry.
He is very important in the dentistry because he made the best composition of dental amalgams and he researched the cause of dental fluorosis. The coolest thing that he did it was that he was the first person to use nitrous oxide for extracting teeth without pain.
The most important knowledge that he gave to dentistry was The Black´s Classification of caries lesions, that it guide today the diagnosis and the treatment dental in all the world.
Here is a photograph of him.