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Dentistry is the oldest profession in the world.
Dentistry goes all the way back to when humans first had teeth… well, not quite that long. However, one study found evidence of teeth being drilled in skulls that dates from 7,500 to 9,000 years ago. The holes were likely made using a prehistoric bow drill. Could that be the work of the first dentist?
Other biting research conducted by the University of Bologna, Italy on a 14,000-year-old skull found that "one rotten tooth in the jaw had been deliberately scoured and scraped with a tool." That makes dentistry one of the oldest recorded professions and is definitely a reason to smile.
(s) bestlifeonline