Live data from Hacker News

Microrobots can brush and floss teeth in a proof-of-concept study

penntoday.upenn.edu

151–160 of 224 posts

Re: Microrobots can brush and floss teeth in a proof-of-concept study

#151
post #122

Earlier quoted context omitted.

Preventing plaque formation avoids the need to remove it. Actually accomplishing that seems unlikely, but not impossible.

There has been work done is creating GM S. mutans that don't produce biofilms, and that would replace your native S. mutans. It could be done by just brushing your teeth with a toothbrush treated with the bacteria so it would cost pennies per treatment.

[deleted]

Re: Microrobots can brush and floss teeth in a proof-of-concept study

#152

ProTip: I went from rarely flossing to basically every day with "this one weird trick": I now floss my teeth in the shower. I like staying in the shower a little longer, so the 2 minutes went from chore to luxury. And the amount of food I remove on a daily basis is astonishing!

Isn't the science on flossing not showing any benefit?

Edit: looked it up. No solid scientific evidence flossing helps.

Re: Microrobots can brush and floss teeth in a proof-of-concept study

#153
post #80

Earlier quoted context omitted.

Like a dishwasher but for teeth?

Some people rarely brush their teeth and never get cavities. Some people brush thrice daily and floss and still get cavities and need root canals. The working theory is we could all be in the first group with the right bacteria in our mouth.

It's also pretty likely that there is variation in enamel formation and hardness (driven by genetic differences).

Re: Microrobots can brush and floss teeth in a proof-of-concept study

#154

Earlier quoted context omitted.

Good idea, it's just I never thought twice about the cleanliness of a toothbrush. I guess it's been ingrained in me to think it's normal to run a toothbrush under water to "clean" it.

I remember a myth busters episode where they demonstrated that toothbrushes left in open air will easily get fecal matter on the brush hairs due to aerosolized poop from when you flush an open lid toilet. Definitely a great conversation ice-breaker.

If that's the case, I'm going to convince myself that I'm doing my immune system some good exposing it to such horrors in minute quantities..

Re: Microrobots can brush and floss teeth in a proof-of-concept study

#155

ProTip: I went from rarely flossing to basically every day with "this one weird trick": I now floss my teeth in the shower. I like staying in the shower a little longer, so the 2 minutes went from chore to luxury. And the amount of food I remove on a daily basis is astonishing!

Your comment reminded me of https://www.youtube.com/watch?v=NMQTg4Y0YT0

I get the comedy but now I'm wondering why he ordered a pair of chinos if he doesn't plan to get out of the shower.

Re: Microrobots can brush and floss teeth in a proof-of-concept study

#156
post #122

Earlier quoted context omitted.

Preventing plaque formation avoids the need to remove it. Actually accomplishing that seems unlikely, but not impossible.

There has been work done is creating GM S. mutans that don't produce biofilms, and that would replace your native S. mutans. It could be done by just brushing your teeth with a toothbrush treated with the bacteria so it would cost pennies per treatment.

That’s a long way from actually replacing brushing and flossing.

For one thing, streptococcus sobrinus is more closely associated with cavity formation than streptococcus mutans. But more importantly these biofilms are a significant evolutionary advantage so this replacement is an unstable situation. Some positive benefits are likely, just don’t assume it can work alone.

Re: Microrobots can brush and floss teeth in a proof-of-concept study

#157

ProTip: I went from rarely flossing to basically every day with "this one weird trick": I now floss my teeth in the shower. I like staying in the shower a little longer, so the 2 minutes went from chore to luxury. And the amount of food I remove on a daily basis is astonishing!

Isn't the science on flossing not showing any benefit? Edit: looked it up. No solid scientific evidence flossing helps.

That's what I thought. Then I tried not flossing, and my gums got unhealthy and started bleeding a lot in like two weeks. My teeth aren't unusual; I wouldn't expect to be that much of an outlier; so not sure what was going on in those studies that I also had heard about.

Re: Microrobots can brush and floss teeth in a proof-of-concept study

#158

ProTip: I went from rarely flossing to basically every day with "this one weird trick": I now floss my teeth in the shower. I like staying in the shower a little longer, so the 2 minutes went from chore to luxury. And the amount of food I remove on a daily basis is astonishing!

Isn't the science on flossing not showing any benefit? Edit: looked it up. No solid scientific evidence flossing helps.

Bro, you don't need a paper to demonstrate the benefit of flossing.

Just get right in there at the back with some decent floss (Oral B Satin Tape is good), and taste the rotten, disgusting food you remove. That's what the people around you are smelling every day when you exhale.

Re: Microrobots can brush and floss teeth in a proof-of-concept study

#160

ProTip: I went from rarely flossing to basically every day with "this one weird trick": I now floss my teeth in the shower. I like staying in the shower a little longer, so the 2 minutes went from chore to luxury. And the amount of food I remove on a daily basis is astonishing!

Isn't the science on flossing not showing any benefit? Edit: looked it up. No solid scientific evidence flossing helps.

Only floss the teeth you want to keep
Post reply on HN