mercredi 22 novembre 2017

Could this "Smart [tooth]brush" work?

While I'm waiting for Skarp laser razors to hit the stores, I thought I'd check out the latest developments in personal care products.

So, here's the Kickstarter for the Smartbrush. It's one of those things I've been expecting someone to invent for as long as I can remember: an electric toothbrush that's actually multiple moving brushes arranged in a mouthpiece. You cram it into your mouth and it brushes all your teeth at once.

But, looking at the info in the Kickstarter, I don't think the device, as prototyped, can work. Here are the problems I see:

1. The round rotating brushes appear to be fixed in place in the mouthpiece. What about the (geometrically necessary) gaps between the brushes? Those would appear to represent tooth surfaces that the brush will miss, the same places with each use.

2. Given that it has somewhere between sixteen and thirty brush heads instead of one, each of which has to do what a normal electric tooth brush head does when pressed against the teeth and gums, all operating at the same time, it would appear to need many times the motor power of a normal electric toothbrush.

3. The power distribution, between the motor and the multiple brushes, is via rubber belts running around the mouthpiece from brush to brush. How well is that going to work, especially when the whole thing is full of saliva and toothpaste?

4. There's nothing about sizing or shaping the mouthpiece to actually fit in any given person's mouth. For the brushes to make proper contact, wouldn't custom shaping be needed?

5. There's no video or photos of anyone actually using the thing to clean their teeth. There's a three-second (poorly lit and out of focus) video of the brushes spinning, with nothing to offer any resistance.

Yet according to their timeline they expect to start shipping in three months. This does not appear realistic.

I don't think I'll be backing this one. Am I wrong?


via International Skeptics Forum http://ift.tt/2jhgZOb

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