A dentist from the Showa University Dent

A dentist from the Showa University Dentistry School demonstrates a treament on a dental robot patient named Hanako Showa 2, that measures 157cm in height and weight 42kg, at a dental clinic of the university in Tokyo on June 29, 2011. Japan's robot maker Tmsuk and the university unveiled the robot to be used by students training, which imitates human reactions such as coughing, tongue movement and pain reaction. AFP PHOTO/Toru YAMANAKA (Photo credit should read TORU YAMANAKA/AFP/Getty Images)

TORU YAMANAKA / AFP

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