Regenerative tooth fillings could put an end to root canals

You really don't want a root canal, and not just because it's potentially painful. Emptying the tooth of the infected tissue at its heart potentially weakens it, since you can't grow that organic material back or put toxic fillings in its place. Re...

ICYMI: Man-made meteor showers and live molar video

Today on In Case You Missed It: Startup Star-ALE wants to create man-made meteor shower tech in time for the Tokyo Olympics in 2020. The Prophix is a video toothbrush tool that can live stream your choppers and save pictures of them to an app in ca...

Long Live the Electric Toothbrush

magi_01

Magi Laderen is an innovative electric toothbrush designed to maximize cleanliness, convenience, and space-savings. The toothbrush holder, which is also a charger with a built-in magnet, ensures the user’s convenience and better hygiene as it prevents lime scale or germs from forming at the bottom. The thin and wireless charger is bathroom-friendly, especially for those who have limited space. The process of charging is both simple and safe. When the electric toothbrush is attached to its charger, the charging starts. In order to make it safe, the elements are electrically insulated. When charging is complete, the power button lights up and blinks so you know when it’s good to go!

Designer: Xu Dong

magi_02

Researchers Make a Saw Blade from Shark Teeth

Science is a great excuse to do just about anything crazy. Crossing a shark with a power saw? Hell yeah. For science! The Jawzall is a reciprocating saw with a blade made from shark teeth. It was developed at Cornell University where they are just cool like that.

shark_teeth_1zoom in


As you may know, sharks don’t have any way of holding their prey still while they take a bite. That’s why they shake their victims. Researchers wanted to know how shark teeth hold up to that kind of treatment, so attaching them to a saw blade seemed like a good idea.

shark_sawzoom in



So they basically glued shark teeth with different morphologies to the saw blade and let them tear through some raw fish. They used teeth from a sandbar shark, a sixgill shark, a silky shark and a tiger shark. After each cut, they measured the amount of flesh sliced. As it turned out, the larger more serrated teeth were much better overall at causing damage. It took only six passes for the tiger shark’s teeth to sever the spine of a salmon. After 12 cuts, all the teeth had worn down quite a bit. They cut only about 7% as much tissue on the 12th run as they did on the 6th.

So now we know that shark teeth make for a poor saw. And that researchers have cool jobs where they get to do crazy stuff.

[via PopSci via Geek]