Live data from Hacker News

Toothpaste made with keratin may protect and repair damaged teeth: study

kcl.ac.uk

201–210 of 225 posts

Re: Toothpaste made with keratin may protect and repair damaged teeth: study

#201

The picture says "enamel-mimicking" and the text says "protective coating that mimics the structure and function of natural enamel", so it looks like a protective layer, not true repair. I've been using a paste with novamin lately, it also creates a protective layer and is also marketed as "repair". I like it and feel some heat when it contacts with teeth, so the chemical reaction must be working. But the marketing l…

> and feel some heat when it contacts with teeth, so the chemical reaction must be working

I dunno, but I also feel some heat when I chew on cinnamon.

Re: Toothpaste made with keratin may protect and repair damaged teeth: study

#202

The picture says "enamel-mimicking" and the text says "protective coating that mimics the structure and function of natural enamel", so it looks like a protective layer, not true repair. I've been using a paste with novamin lately, it also creates a protective layer and is also marketed as "repair". I like it and feel some heat when it contacts with teeth, so the chemical reaction must be working. But the marketing l…

Try biomin F, newer novamin

Seems like this is just protection, not rebuilding of lost enamel.

Re: Toothpaste made with keratin may protect and repair damaged teeth: study

#203
post #178

Earlier quoted context omitted.

> is nice in the morning before breakfast. I typically brush after meals, not before, but however you do it is better than not doing so at all.

FWIW I think the theory is that you have some window before whatever on your teeth turns into hard plaque. So brushing in the morning helps remove any accumulation that happened overnight. I guess brushing after breakfast might be slightly more efficient in the sense that it will clean away/remove food remnants you've just eaten but not sure how much difference it makes in practice as long as you're brushing again la…

Re: when to brush… it’s fascinating to me how little fact-based debate or discussion there really seems to be about this type of personal care custom. Most people just do whatever they’ve always done and haven’t had the chance to hear arguments (besides shallow ones from a roommate or spouse that amount to “that’s not how I was taught.” It’s nice to hear actual reasons.

Re: Toothpaste made with keratin may protect and repair damaged teeth: study

#204
post #149

The picture says "enamel-mimicking" and the text says "protective coating that mimics the structure and function of natural enamel", so it looks like a protective layer, not true repair. I've been using a paste with novamin lately, it also creates a protective layer and is also marketed as "repair". I like it and feel some heat when it contacts with teeth, so the chemical reaction must be working. But the marketing l…

Never heard of Novamin but doesn't look promising? https://pmc.ncbi.nlm.nih.gov/articles/PMC7068624/ Conclusion Review shows that Novamin has significantly less clinical evidence to prove its effectiveness as a remineralization agent in treating both carious and non-carious lesion. Hence, better designed clinical trials should be carried out in the future before definitive recommendations can be made.

Welcome to the toothpaste rabbit hole of the internet.

Long story short, it didn’t work out in military applications and ended up being purchased by a toothpaste maker. They couldn’t bother getting it FDA approved for toothpaste so it is not available in the USA. Que conspiracy theories.

Re: Toothpaste made with keratin may protect and repair damaged teeth: study

#205

Think about it, the human genome already contains genetic encoding of keratin, it wouldn't have to evolve (incrementally bruteforce) a full protein code to "protect and repair" damaged teeth. It would just need to "happen onto" accidentally expressing it somewhere in the mouth: perhaps the mucous membrane lining the inside cheeks, perhaps the tongue, perhaps some glands in the mouth. Accidentally expressing a gene in…

> If this were effective, our bodies would probably be doing it already.

Naaah, this is not how evolution works. Tooth decay was not as big of a problem for our ancestors than it is for us (more sugar and acidic soft drinks) and tooth decay becomes more of a problem for older people that already reproduced making good teeth above a certain age uninteresting from an evolutionary standpoint. (And mayebe instead of better teeth we learnded to feed grandparents soft porridge to keep them around longer for babysitting duties ;-) (see the usefulness of aunts in elephants). Just because you like to keep your teeth, doesn‘t mean that nature cares.

Re: Toothpaste made with keratin may protect and repair damaged teeth: study

#206

Is there any blogpost or website to get my mind unstuck on toothpaste? I feel this market is extremely confusing and I don’t know what to buy anymore. EU citizen here.

If you have no issues like sensitivity or cavities, imo I don't think there's a need to spend time optimizing the type of toothpaste. Went down that rabbit hole once reading research papers of tested and optimum fluoride concentration for remineralization, no idea why I did that considering I just use the toothpaste my partner gets and I haven't had a cavity in a decade probably

Ah, the non-problems of young people! What you say is true, but effective repair tooth pastes might be quite interesting for people that already have thin enamel, worn away enamel, crowns, reduced gums, etc. I hope the effect size is big enough for one of the substances mentioned here …

Re: Toothpaste made with keratin may protect and repair damaged teeth: study

#207
post #53

Earlier quoted context omitted.

It seems to me the two are effectively the same unless you have significantly misshaped teeth (remineralizing vs regenerating). I also use hydroxyapatite, just to reduce my fluoride exposure, although I believe fluoride is supposed to be a more potent remineralizer (and fluorapatite is allegedly stronger than natural hydroxyapatite). But the upside is that I don't mind swishing hydroxyapatite around in my mouth for 1…

What product(s) do you recommend? I'm in the US.

I've used these: https://www.amazon.com/dp/B08F2MW3G2 https://www.amazon.com/dp/B078YFQZK7

Re: Toothpaste made with keratin may protect and repair damaged teeth: study

#209

Earlier quoted context omitted.

Nobs is good because they only use rod-shaped NHA, not needle-shaped NHA which has a worse safety profile. Safety profile is important for anything nano

Is there anywhere I can learn more about NHA shapes? I currently use Apagard Renamel.

Here is the EU safety opinion. https://health.ec.europa.eu/system/files/2022-08/sccs_o_246....

IDK how to tell what brand uses what type without independent testing or taking their word for it. Several makers have come out and said needle-shaped is cheaper to buy so if a brand has 10% formulation as opposed to 1 or 3 or 5%, it is more likely to be using needle-shaped. (And there is a separate conversation to be had whether 10% is needed/ideal concentration anyway)

Re: Toothpaste made with keratin may protect and repair damaged teeth: study

#210
post #36

Earlier quoted context omitted.

There are lots of activities wherein a hair, pubic or otherwise, might end up in a person's mouth.

Name two.

Kissing a child on the head

Snuggling with a dog

Breathing

Oral sex

Licking yourself like a cat

Post reply on HN