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Oral— Medical Biotech

InventTable — ORAL ERA — Medical Biotech

InventionDescriptionYearInventorCountry
Trepanning holes cut into skull 65,000 BCE France, Europe
Dentistry infected tooth cleaning 12,000 BCE Northern Italy

Back to InventTable Era: ORAL ERA Classification: Medical Biotech

Leo Dean Jansen

Leo Dean Jansen, MD is a retired orthopedic surgeon with a special interest in the history of technology.  This web page is the culmination of  his efforts to define and organize the history of technology as seen through 2000 inventions.  TECHNOLOGY:  TABLE, TRUTHS, TIMELINE, TOP 100 represents the 4 parts of this project.

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