MetaFilter posts tagged with tooth

Man recovers vision after 12 years by implanting tooth in eye

scrutiny — Sat, 18 Jul 2009 22:21:06 -0800

Recently, a man's sight was returned to him after losing it for 12 years. How did he do it? Surgeons drilled a hole through one of his canines, put a lens in it, and implanted the construct in his eye. The specific surgery is called Osteo-Odonto-Keratoprosthesis and was first pioneered in Italy in 1963. Essentially, a tooth and a small portion of the jaw is removed from the patient. A small hole is drilled into the tooth and a lens is attached inside. The tooth construct is implanted in the cheek to allow it develop a blood supply, and then later is implanted into the eye. Despite how unwieldy this procedure seems, it has a shockingly high success rate over time. In this survey of 181 patients, 85% retained functional use of their eye after 18 years, with approximately 55% retaining the best postoperative functionality.

Horny _and_ sensitive!

greatgefilte — Tue, 13 Dec 2005 10:51:29 -0800

The narwhal, often termed "The Unicorn of the Sea," has a really odd tusk. It's long, spiraled, and there's only one of 'em per animal. Its purpose has been disputed for ages, but at long last, it seems that the answer has been found. And it's pretty damn cool.

you don't have an excuse not to floss anymore

prescribed life — Wed, 12 Nov 2003 17:21:07 -0800

you don't have an excuse not to floss anymore

orion carving on mammoth tooth

stbalbach — Sun, 26 Jan 2003 11:09:31 -0800

A 32,000 year old etching on an ivory mammoth tusk is linked to the constellation Orion which may have been used as a primitive "pregnancy calendar" designed to estimate when a pregnant woman will give birth. The oldest known drawing of a star pattern, it was created by the mysterious Aurignacian people about whom we know next to nothing save that they moved into Europe from the east supplanting the indigenous Neanderthals.

mikrophon — Thu, 26 Sep 2002 11:58:17 -0800

Scientists grow pig teeth in rat intestines. Wait! Keep reading . . .
[This] experiment suggests the existence of dental stem cells, which could one day allow a person to replace a lost or missing tooth with an identical tooth grown from his or her own cells.
So can I stop flossing now?

moth — Thu, 20 Jun 2002 14:34:59 -0800

but does it have vibrate? A prototype tooth implant which picks up digital signals from radios and mobile phones goes on show at the Science Museum in London this week.

adampsyche — Tue, 28 Aug 2001 08:56:25 -0800

Arnold had a full grill in Total Recall, but Hopes for manned — and especially a "womanned" mission to Mars — might hinge on teeth. The bone-weakening effects of zero-gravity environments might lead to permanent tooth loss, says a government dentist. via Slashdot