Archive for the health Category

Japanese tooth patch may reduce decay › News in Science (ABC Science)

Posted in health with tags , , , on September 17, 2012 by SpenceG

Scientists have created a microscopically thin film that can coat individual teeth to prevent decay or to make them appear whiter.

The “tooth patch” is a hard-wearing and ultra-flexible material made from hydroxyapatite, the main mineral in tooth enamel that could also mean an end to sensitive teeth.

“This is the world’s first flexible apatite sheet, which we hope to use to protect teeth or repair damaged enamel,” says Professor Shigeki Hontsu of the Kinki University’s Faculty of Biology-Oriented Science and Technology in Japan.

“Dentists used to think an all-apatite sheet was just a dream, but we are aiming to create artificial enamel,” the outermost layer of a tooth, he says.

Researchers can create film just 0.004 millimetres thick by firing lasers at compressed blocks of hydroxyapatite in a vacuum to make individual particles pop out.

These particles fall onto a block of salt which is heated to crystallise them, before the salt stand is dissolved in water.

The film is scooped up onto filter paper and dried, after which it is robust enough to be picked up by a pair of tweezers.

via Japanese tooth patch may reduce decay › News in Science (ABC Science).

Advertisements

Going public with depression

Posted in health with tags on August 27, 2012 by SpenceG

Editor’s note: Politicians Jesse Jackson Jr. and Patrick Kennedy have each recently revealed struggles with depression and mental illness. After the death this week of “Top Gun” director Tony Scott in an apparent suicide (it’s unclear whether Scott suffered from mental health issues), CNN’s Kat Kinsman writes that talking freely about personal mental health issues and suicidal thoughts, whether you’re a public figure or a private person, can help those who share the struggle.

(CNN) — I am 14 years old, it’s the middle of the afternoon, and I’m curled into a ball at the bottom of the stairs. I’ve intended to drag my uncooperative limbs upstairs to my dark disaster of a bedroom and sleep until everything hurts a little less, but my body and brain have simply drained down. I crumple into a bony, frizzy-haired heap on the gold shag rug, convinced that the only thing I have left to offer the world is the removal of my ugly presence from it, but at that moment, I’m too exhausted to do anything about it.

I sink into unconsciousness, mumbling over and over again, “I need help… I need help… I need help.” I’m too quiet. No one hears.

Read full story:  http://www.cnn.com/2012/08/22/living/going-public-with-depression/index.html.  Also, pharmacy technician license.