Why Do We Have Such Crooked Teeth?

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  • Опубликовано: 11 мар 2017
  • A lot of humans need or want braces to fix their crooked teeth, but why do you never see a dog walking down the street with headgear? Our ancient ancestors and mac and cheese may be to blame!
    *Correction: Even though hyraxes look similar to rodents, they're actually in the order Hyracoidea, not Rodentia! They're more closely related to elephants and manatees than to mice and guinea pigs.*
    Hosted by: Hank Green
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    Sources:
    www.wired.com/2011/11/agriculture-jaw-shape/
    www.pnas.org/content/108/49/19546
    journals.plos.org/plosone/article?id=10.1371/journal.pone.0117301
    www.ncbi.nlm.nih.gov/pubmed/19514263
    www.sciencedirect.com/science/article/pii/S004724840400051X
    rspb.royalsocietypublishing.org/content/early/2011/06/07/rspb.2011.0971

Комментарии • 1 738

  • Erdem Özcan
    Erdem Özcan 4 дня назад

    Especially among teenagers, crooked teeth are always a big problem. Because they lose their self-confidency with their crooked teeth. With developed technology, we have many opportunities for their treatment. The first and most popular one is dental braces treatment. As everyone knows, dental braces my change according to the treatment process and problems. Dental braces have many kinds such as ceramic, metal or invisalign. I aim to give detailed information about dental braces and crooked teeth treatment on my blog thecrookedteeth.com. I hope you can visit and read beneficial posts about dental braces and crooked teeth.

  • FruitySurprise
    FruitySurprise Месяц назад

    I have 4 teeth less than a normal human adult (2 from genetics, 2 to even it out) and that was the only reason I needed braces. But now I don't have any problems with my wisdom teeth and can just enjoy them as they are

  • Sunshine Angel
    Sunshine Angel Месяц назад

    /chewing intensifies/

  • feels_dude
    feels_dude Месяц назад

    our modern diet

  • No And no
    No And no Месяц назад

    I sucked my thumb until I was 10...no one stopped me. So the only two teeth I need to have fixed are my front ones. Everyother tooth is straight

  • masterofthecontinuum
    masterofthecontinuum Месяц назад

    so Lamarck was actually right? somewhat, at least.

  • Aqua Fractalyne
    Aqua Fractalyne Месяц назад

    Ah so my mom's inability to cook meat without transmuting it into rubber must be why I have such a strong jawline lol

  • feels_dude
    feels_dude 2 месяца назад +1

    This guy is such a soyboy

  • iNezumi
    iNezumi 2 месяца назад

    My mom would make me chew hard food when I was little for that reason. xD
    Like instead of cutting things in tiny pieces, peeling fruit, or cutting off bread crust (Bread is kinda different in my home country, more similar to organic/artisan breads with hard, chewy crust so as a kid it was a pain to eat.)
    But hey I did not have to wear braces. (Still had to have my wisdom teeth removed tho cause there was physically no space for them)

  • Gabriel Cunha
    Gabriel Cunha 2 месяца назад

    I don't

  • GraveUypo
    GraveUypo 2 месяца назад

    i don't though. never did.

  • Russell smejkal
    Russell smejkal 2 месяца назад

    Why do the wisdom teeth come in last and Layton life as a kid

  • Diana Nielsen
    Diana Nielsen 2 месяца назад

    My absolute favourite scishow host!

  • sheedrock1
    sheedrock1 2 месяца назад

    Moe fang comes to mind

  • Chang'e
    Chang'e 2 месяца назад

    Crikey, mate

  • Emeraldsheep B
    Emeraldsheep B 2 месяца назад

    Half my teeth have done a 180 or a 90 degree turn. I just don't want braces though...

  • Tia D.
    Tia D. 2 месяца назад

    I have all my wisdom teeth still, they are perfectly healthy, and fit just right in my mouth. I can't stand when I got to a small town dentist and they badger me to take them out, but every orthodontist at my local university I've seen says 'these look great, no reason to remove them'.

  • kaykay
    kaykay 2 месяца назад

    I watched a dental ad before this. THE IRONY

  • Mossy Deer Bones
    Mossy Deer Bones 2 месяца назад

    1:54 sorry to be a fuss pot but hyraxes aren't rodents, they're in their own clade with elephants and sea cows. You could do a whole video in them actually, they're pretty cool

  • Shawty I'mma Never Don't Mind About a Thing

    "not enough space" I have the opposite problem, I actually have TOO MUCH SPACE so I have an annoying gap between my front teeth 😢

  • Alyssa M. H.
    Alyssa M. H. 2 месяца назад

    I have perfectly straight teeth with no caps

  • Ardis's Adventures
    Ardis's Adventures 2 месяца назад

    It actually has to do with the alien DNA splicing.

  • haruno21
    haruno21 2 месяца назад

    I never needed braces......I always felt so lucky for this

  • Byson Lee Harrison
    Byson Lee Harrison 2 месяца назад

    My jaw perfectly fits all my teeth and i live in a citi never had any wisdom tooth issues and im never getting them removed lol

  • PokeFan22
    PokeFan22 2 месяца назад

    I had some back teeth removed when I was little. My teeth are perfectly straight and I don't have a overbite. I'm really lucky.

  • Penguin S
    Penguin S 2 месяца назад

    I got gap in my two front big teeth but it makes me me

  • Ron Morey
    Ron Morey 2 месяца назад

    Not definitive of course but I attribute my long canine teeth, as well as the sharpness of my teeth to being raised mostly on wild game growing up. I lived in a logging camp so deer and fish were the main staples of my diet from the ages of 5-12. It's likely before that I had a high wild meat diet too since my dad was an avid hunter.

  • Angreh
    Angreh 3 месяца назад

    My baby teeth were crooked as all hell until i lost them. Still had to get braces though due to huge overbite.

  • Kira Nobles
    Kira Nobles 3 месяца назад

    *Vegetarians made dentists rich.* They are the reason why dentists earn millions for correcting problems that didn't exist back before then.

  • super sonic cloud
    super sonic cloud 3 месяца назад

    I don’t need braces like for a long time or maybe never

  • ARhannah
    ARhannah 3 месяца назад

    ...shet

  • T1ger8oi
    T1ger8oi 3 месяца назад

    Should humans take daily creatine supplements? Are modern humans deficient in creatine? Is there a recommended daily value for creatine?

  • dracofirex
    dracofirex 3 месяца назад

    I have 5 wisdom teeth so my jaw is constantly crowded. Braces helped but they're still messed up.

  • Wut Wut
    Wut Wut 3 месяца назад

    Doomed to needing jaw surgery

  • OmarRPG
    OmarRPG 3 месяца назад

    So does this mean giving kids something tough to eat like jerkey or a lot of gum help develop their jaws?

    • Diego
      Diego 3 месяца назад

      OmarRPG yes

  • TheWeirdPotato
    TheWeirdPotato 3 месяца назад

    I have straight teeth, never needed braces and i have my two top wisdom teeth.
    Damn im lucky.

  • Oliver Wilson
    Oliver Wilson 3 месяца назад

    All my canines stick out to the point where they cut my gums, I don’t have nerves in my teeth and I don’t have enamel... I just love genetics

  • GeekieGecko
    GeekieGecko 3 месяца назад

    I'm watching this after coming back from the orthodontist. I just got my wires replaced for the last time! I'm getting them off in about 5-7 months. :)

  • MineMacOfficial
    MineMacOfficial 3 месяца назад

    K

  • Jake Sutton
    Jake Sutton 3 месяца назад

    Answer: ugly people don't die off

  • Fabulous Cthulhu
    Fabulous Cthulhu 3 месяца назад

    I used to eat beef jerky a lot as a little kid, as well as various tough fibrous foods, so I think I'm set.

  • Emma Doria
    Emma Doria 3 месяца назад

    I have straight teeth

  • meter maide
    meter maide 3 месяца назад

    valveeta mac and cheese with some diced ham cubes any day over some rockhard foods.

  • alvachan88
    alvachan88 3 месяца назад

    someone double check if matt stonie has straight teeth.

  • Strawberries777 ‪‪
    Strawberries777 ‪‪ 3 месяца назад +2

    I think it's also just plain genetics too. As a kid growing up, I never needed braces and neither did my brother. My mom always claimed the people on her side of the family have "teeth like Denzel." lol My dad's side tend to have that gap between the front two, but thankfully my brother and I don't have that.
    My teeth are next to perfect besides a canine that grew in kinda facing the wrong way, and my slight buck front teeth. :B
    I did recently have my bottom wisdoms removed, though only because the dentist insisted to, not that they hurt at all yet. My brother had his removed because they were causing him severe pain, but my mom still has them and is just fine so I can't help but wonder if I wasted my money...

  • Clarinet LoverEmy
    Clarinet LoverEmy 3 месяца назад

    Ohhh...wow...i guess my mouth is..small?...i want my mouth to grow RN,i dont wanna get bullied no more!

  • Fox
    Fox 3 месяца назад

    Inbreeding

  • Natasha
    Natasha 4 месяца назад

    That's so weird, I don't have wisdom teeth and I have a premolar which is at a 90 degree angle making it larger than normal, but I don't have crooked teeth nor do they stick out.

  • Mary Barr
    Mary Barr 4 месяца назад +1

    My teeth are perfect, some people don't believe me when I say I never had braces. They started to hurt and shift when my wisdom teeth started coming out but I had them all removed and my teeth settled back in a straight position. I'm really lucky.

  • Abhishek Biradar
    Abhishek Biradar 4 месяца назад

    All parents make your children chew rocks

  • That Sagittarius Girl
    That Sagittarius Girl 4 месяца назад

    I never had crooked teeth but they're kind of... shaped like they're sharp? I guess I did had a childhood of gnawing away at well-done beef and meat more often than consuming vegetables. Oh well.

  • Jackie Brandel
    Jackie Brandel 4 месяца назад

    when then do only some people have crooked teeth? me and my sister ate the same diet growing up but she needed braces where i did not

  • T1Oracle
    T1Oracle 4 месяца назад

    So eat more tough and rubbery things? I guess my mom's cooking skills were a good thing...

  • Pietro Tettamanti
    Pietro Tettamanti 4 месяца назад

    You get broad shoulders if you exercise the chest and back area for example. That's an example of human developmental plasticity

  • money solution
    money solution 4 месяца назад

    Beargrills would have lion teeths

  • Messylife
    Messylife 4 месяца назад

    He looks like a Futurama character drawn in the family guy style

  • Pache
    Pache 5 месяцев назад

    Chewing intensifies

  • Anony Mouse
    Anony Mouse 5 месяцев назад

    Speak for yourself lol

  • Kaz
    Kaz 5 месяцев назад

    This is the evolution I believe, not that we came from fish.

  • Helium Valentine
    Helium Valentine 5 месяцев назад

    It is really odd that we have teeth that have to be removed.
    Mine started to come in and I lost feeling in the roof of my mouth until they were removed. I developed a massive sore in the roof of my mouth during the two weeks I waited for surgery because I couldn’t feel it and food ripped it open.

  • Czesnek
    Czesnek 5 месяцев назад

    So is this an another evidence that we are mainly carnivores?

  • Ellie Griesemer
    Ellie Griesemer 5 месяцев назад

    Why is it that some of my adult teeth never developed?

  • Daniel G
    Daniel G 5 месяцев назад

    I can't afford braces

  • It's yuh girl mikkeai8908
    It's yuh girl mikkeai8908 5 месяцев назад

    I wonder if genetics play a role because pretty much everyone in my family naturally has straight teeth. None of us have ever had braces but we pretty much all have straight teeth still.

  • Don Wald
    Don Wald 5 месяцев назад

    I was too poor to get braces.

  • Kaitlyn Munday
    Kaitlyn Munday 5 месяцев назад

    Being in the dental practice I have some skepticism behind the blanketing statement that our jaws simply aren't big enough anymore. Most African descended people have ample room in their arches for all 32 teeth, often with a central diastema. Polynesian people also often exhibit this, though not as commonly. Where in my experiences it is most often asiatic (specifically Chinese in my practice) and Caucasians that either have to have them removed or never develop them. These two broad groups of people in my experience are the ones who need between 2-8 teeth removed for orthodontic treatment. As the video stated we tend not to see maloccluded teeth in nature. This is a result of rich genetic diversity. When genetic diversity is limited due to factors such as isolation and breeding we see this readily in many animal groups, take the family friend the English bull dog as an extreme example.
    Now I ask myself this is this, is this topic of malocclusion and wisdom teeth removal (or having none at all) an evolutionary leap, something that is beneficial to the human genome as a result of agriculture, or a result in loss of genetic information due to how our ancestors got jiggy with it?
    I Kate the causian lean toward the side of dwindling genetic diversity.

    • Kaitlyn Munday
      Kaitlyn Munday 5 месяцев назад

      ruclip.com/video/qGlwiVDTZjw/видео.html
      A link to an informative video. It touches on the point about 10000 years of agriculture made here. The video in the link suggests that only in the last 400 years have crooked teeth -in the modern sense- been noted in humans.

  • IntarwebUser
    IntarwebUser 5 месяцев назад

    So... how many carrots and apples do I have to feed my kids and for how long to keep them from getting crooked teeth? What about chew toys, are there any chew toys for humans and how well would those work? I've had braces, and I've had wisdom teeth removed, and I'd prefer that weren't necessary for my descendants. And if genetics isn't the problem, then marrying a man with straight teeth isn't going to solve it.

  • fuckfannyfiddlefart
    fuckfannyfiddlefart 5 месяцев назад

    The wear on teeth shows we were predominantly herbivorous.

  • Kimberly Santasa
    Kimberly Santasa 5 месяцев назад

    please like thissss its rlly good and it would mean so much to mee.. its for schoolproject instagram.com/p/BcUBjMmF469/

  • Anon archist
    Anon archist 5 месяцев назад

    I still have all my wisdom teeth. all my teeth came in perfectly, and my roots are all twisted around each other.

  • Fploop
    Fploop 5 месяцев назад

    What would happen if we got so advanced in agriculture that we no longer needed to cook food because everything became liquidized? Would evolution over a large period of time make us loose our teeth completely?

  • Zion
    Zion 5 месяцев назад

    I was born with straight teeth and every time I go to the dentists they are surprised I never had braces

  • BuckShotFTW
    BuckShotFTW 5 месяцев назад

    The big theory right now is diet. if you look at the jaw of the tribes in Africa and South America, they wide jaws, and very good looking teeth. Now introduce western or modern food and drinks into that population and within one generation there is tooth decay and narrowing of the jaw. Think about it, we were not designed in such a way that our teeth fall out or get holes in them. Its simpe our mouth microbiome that is to blame.

  • Nicole R
    Nicole R 5 месяцев назад

    I have the opposite problem: my teeth are straight but all have spaces between them

  • Tyler-James Denton
    Tyler-James Denton 5 месяцев назад

    I have never had crooked teeth. Ever since I was little my teeth have been perfectly straight. Everyone asks if I’ve had braces. I got my wisdom teeth removed when I was 15

  • Ray Ascione
    Ray Ascione 5 месяцев назад

    Weird because I have perfect teeth

  • loeka lutters
    loeka lutters 5 месяцев назад

    My teeth are not crooked i have way enough space in there so why is thath

  • Ron Budd
    Ron Budd 5 месяцев назад +1

    Should you give a baby beef jerky or baby food?

  • MrJjscrap
    MrJjscrap 5 месяцев назад

    That's why biltong is so perfect for teething babies

  • Alex Reid
    Alex Reid 5 месяцев назад

    This doesn’t explain why I have a bunch of random teeth just hanging out in the middle of my mouth 😂

  • JxekI
    JxekI 5 месяцев назад

    Thank you for telling me I thought god wanted me to be ugly but it's because it's a human thing thank you

  • Rayven Lebony
    Rayven Lebony 5 месяцев назад

    could you please do one about why we have high or sharp canine teeth please

  • rory swastika
    rory swastika 6 месяцев назад

    I have crooked teeth.. theyre over crowded.. I hate it when I cant smile on the pictures and laugh with my friends confidently when I hang out with them

  • Lyuis4115
    Lyuis4115 6 месяцев назад

    i hate my teeth, i only have one tooth that makes my teeth crooked, my canine tooth =-=. it's like the only one above my rest straight teeth but useless cause i can't chew with it, it's just hanging up there like wtf what's the point of having this one hanging around, sadly i cant pull this one out :/

  • 매리야
    매리야 6 месяцев назад

    Why is my teeth yellow???? They say that yellow teeth are stronger that white teeth. Is it true?
    I'm hoping that my Qs will be answered.

  • Malena Sandim
    Malena Sandim 6 месяцев назад

    I had to have 8 teeth removed because they were too big for my mouth.

  • Dalir Kosimov
    Dalir Kosimov 6 месяцев назад

    Teeth insecurity makes me sick.
    Interpret this comment however you like.

  • Christian Loder
    Christian Loder 7 месяцев назад

    how come my front tooth sticks out and sometimes when I close my mouth, the tooth tries to stick out of my mouth?

  • ANISH KUMAR SAHOO Sahoo
    ANISH KUMAR SAHOO Sahoo 7 месяцев назад

    can u tell me any situation in which thrust is not there rather any other force may be acting?

  • Jess Giang
    Jess Giang 7 месяцев назад

    What about people who naturally have straight teeth? Was it just luck? Or do their eating habits still have something to do with it? Both?

  • Cringe //me
    Cringe //me 7 месяцев назад

    My teeth were naturally straight, I just did so many stupud things that they started to get crooked 😂😂😂

  • Emily Jackson
    Emily Jackson 7 месяцев назад

    What about the use of bottles and dummies or pacifiers for infants/toddlers and even children and the effect they have on teeth?

  • I Love Hetalia!
    I Love Hetalia! 7 месяцев назад +1

    Ok I have another question why are some of use missing our teeth I had to get 6 teeth pulled before getting my braces because there was no adult teeth behind them

  • Tanja Tanja
    Tanja Tanja 7 месяцев назад +1

    Am I the only one who never had to wear braces? :D

  • jtech0
    jtech0 7 месяцев назад

    I have had family suggest having my tooth fixed, but I just don't care that much and i con't see it causing any issues. I have an Asian friend and they said to any of them people with perfect teeth like many in the US seem to like would be nuts. I guess in Asia crooked teeth, etc is cute. In my book if it don't cause health issues then I say who cares.

  • Amelia Salisbury
    Amelia Salisbury 7 месяцев назад

    Thats funny because i used to have issues eating meat when i was a kid because i just chewed the same bite for like 20min at a time.
    I also happen to have a longer and narrower jaw... 🤔 (according to my orthodontists)

  • PB PotatoBoi
    PB PotatoBoi 8 месяцев назад

    666 views ._.

  • Arthur O'Brien
    Arthur O'Brien 8 месяцев назад

    Even more evidence there is significant evolution going on since the invention agriculture. That will make a lot of things even harder to explain. Slighty annoying and quite interesting.

  • Dee Elmore
    Dee Elmore 8 месяцев назад

    *chews intensely*

  • CookieTheKitten
    CookieTheKitten 8 месяцев назад +1

    I have crooked teeth😖