article_snippet.sent: Dr. Green, says Dr. Green routinely uses obsidian blades.
article_snippet.sent: Dr. Green said Dr. Green once helped documentary makers produce a program on surgical technology in ancient Egyptian, setting up a blind test on the cutting power of obsidian.
article_snippet.sent: It wasn't hard to tell the difference at all -- as soon as Dr. Green turned around everyone in the studio was like 'Ohhh'," Dr. Green said.
article_snippet.sent: The feel is very different because obsidian has no 'bite,'" Dr. Green said.
article_snippet.sent: And Dr. Green believes incisions made with these blades heal faster.
article_snippet.sent: Dr. Green said a colleague who needed a mole removed agreed to undergo an experiment where half the procedure was carried out with an obsidian scalpel and the other half was removed with steel.
article_snippet.sent: Dr. Green, whose scalpels were manufactured for him by an expert flint-knapper and archaeologist Errett Callahan, concedes the Stone Age scalpels are not for everyone.