Loki, what are you doing? [Loki] I'm in your
science project thwocking you teeth! Kids! You can do it!
Hey, Loki! Hey, Sagan, this is a nice new studio!
Yeah! I like it,
there's no there's no Mr. Sun. Oh, yeah.
Yeah, oh, we're on! Hallooo, Hoomans!
Hey, guys! We're back in business, now, and also we got a new studio.
It needs some paint.
Anyway, this is-- the
Tooth Fairy came back! Yeah. And gives you
your teeth back. Yeah. So, wait, what are
you gonna do with your teeth? We're gonna
put them in these, um,
these test tubes and see what happens to
them. Okay, we're gonna try to make some
cavities. Yeah. Where's your teeth. Oh, good,
they're in here. But don't open it. I think--
I think it might, uh, I think it might
ugly. It's, it's rattly. I think it might
be ugly. Loki, what are you doing?
I'm in your science project thwocking yoo
teeth. Ha! High paw! Let's get started!
I'll move over there so I can do some close-ups,
okay, of what we're gonna do. And we have
eight teeth and a one with a cavity.
Okay, they've all been cleaned. What
we did to clean them was we brushed
them, put them into hydrogen peroxide
solution to get off some extra organic
material, so they should all be kind of
the same color, and a little bit of
alcohol so they should be sort of
sterilized. We did the same thing with
the test tubes-- the test tubes are sterilized.
Maybe you should say what's in there!
What's in the test tubes. There's a control
test tube for tooth that's not gonna have
anything done. Yes, water. Distilled water.
And then there's cola,
diet cola. That's interesting cuz I wonder
if fake sugar also affects your teeth. Yeah, okay
Drink mix. Okay, like a Kool-Aid. Splenda. Juice--
apple juice, and tea. Oh, it just plain
black tea. Yeah.
No sugar in there. Okay, let's see
what happens! I still don't know why
there's tea. Cuz people think that it changes
the color of your teeth. Let's see what
happens. Let's see, okay. Halloo, hoomans,
again, maybe. We are set up. We got our tops
off. Yeah, let's take a look at your teeth.
Yep. This is the container. These? You can
open it up. It might be a little gross. One of them is gross.
Sagan did you get a cavity, so we
have one that has a cavity. Is it the big
one?
Yes, it's the big one. Well, that's a very
obvious cavity. There are the teeth
Things once seen can't be
unseen. That's true,
you cannot unsees. Alright, let's start
with your control. Put the one with the
cavity-- you know what-- let's just-- I don't wanna pick them up.
 You don'twant to pick them up? What's wrong with
you? They're your own teeth! They're teeth! Why
would you want to pick--? They're
sterilized and everything.
It's-- do it for science! Aw, gross.
I'm in your science
projects thwocking your teeth. Oh, okay
you have to touch them. It's okay, they're
not slimy, or anything. There's the big
one with the cavity in it. So, where, do I put it?
Put the big one with the cavity into
control because nothing's going to
change on that one. Ugh. Then pick another
one to put in there that's not gonna
change.
Any one you want, doesn't matter.
I'll add this one. Okay, and then put the top
on. Aw, that's gross. The controls. They're
not bad. They're just like pebbles, right?
Now, okay, put one in the distilled water.
Distilled water is water that's kind of--
it's very clean. Put the top on it. It went
ploop! Yeah it did.
Okay,
and our hypothesis is that the distilled
water won't change the tooth, right? Okay,
but these-- we are sure that the cola will
change the tooth, and the juice, right?
Because they have pretty harsh sugars.
Yeah. And then we're not sure about the
Splenda and the aspartame, but we're gonna
find out. If you think fake sugar, the
fake artificial sweeteners, maybe they
wear out your teeth? We'll find out! Yeah,
yeah, sometimes it'll make sense. Yeah, and
we'll see if tea does anything. That
would be interesting. Okay, put the rest
of the teeth in the other ones. Okay,
it's one in there. Okay, it's a fruit drink mix, fruit punch.
This for the Splenda. Splenda is an
artificial sweetener. That one has a real
sweetner, one you conventionally know
as sugar. Anyways, the last one in
juice. Juice, where was it?
Okay, so this is what we have. Is
everything is in there. I'm gonna put the
tops on these while you look up what a
cavity is. For the hoomans. That is
a bad cavity. Yep.
Yeah, badded than that, I think. That's
actually badder than mine. It's much
and worse. And yours, it was because your
teeth are so tightly packed you couldn't
get in there. What's seen can't
be unseen. Okay, well, it's like ,why don't
you read a little bit about tooth decay
and a couple sentences about quick facts?
Tooth decay, also known as dental caries or
cavities, is a breakdown of teeth due
to acids made by bacteria. The cavities
may be a number of different colors from
yellow to black. Symptoms may include
pain and difficulty with eating.
Complications may include
inflammation of
the tissue around the tooth, tooth loss,
infection, or abscess formation.
Okay, that's great. The cause of caries is
is acid from bacteria dissolving the
hard tissues of the teeth-- enamel, dentin,
and cementum. The
acid is produced by bacteria when they
break down food debris or sugar on the
tooth surface.
Okay, so, sugar is a big factor in dental
caries
or tooth decay or cavities or Yuck
Mouth, if you're old enough to
remember that. Some of us are.
Yuck mouth. Yeah, I have to show you
that video later. I'm sure that YouTube
has it in probably a dozen places. Hi!
So I-- we're going to do this. We'll
show you some pictures of the control
teeth in the microscope, and then why
don't you come back next week and you
can see with us what happened to these teeth!
Okay? Yeah!
Hallo, hoomans! I'm gonna show Sagan
the difference between a healthy tooth
and a cavity in the microscope. Let's get his
reaction-- reaction shot-- I don't want to
look. Okay, okay, That's a healthy tooth!
Ready? Yeah. Here we go.
Not bad, not bad. Yeah, that's not bad.
Maybe it just looks a little bit like
snow, and it's rougher than you thought,
huh? It looks like ice. It doesn't, yeah.
And it's not as smooth as you
thought, though, right? Yeah, okay I don't
wanna see the cavity. No, this isn't the cavity
this is more-- this is another spot on a
healthy tooth.
Well, um, you can see kind of little like
cracks. That's just like the way they grow.
Okay, ready?
Okay, lower this so
we get a good reaction from you on this
one. Ready-- three-- two-- one-- you did this to
your own tooth. But I-- I don't even see it.
Does it look like the other one; it's
going down into the hole it's focusing
into the hole of the cavity isn't that
grows? Ugh! That's gross. What is that spike?
It's so gross that's from-- the spike is
part of the tooth that didn't get eaten
away by the sugar. Another shot, here comes, no, hey,
I had to line that up. It's hard to
deal with the paws. Uuugh! It's almost muddy. I
Keep watching, keep watching ,it gets even
grosser. No way! It looks like an upside
side down ceiling. Right now it's just a little
blurry, but this is a different part
of the cavity. It was still
being--  almost greenish. It's like
brownish greenish and that's-- all those
rough edges is where the bacteria was
eating your tooth. That last part look look
like ice-- look like crushed ice mixed
with maple syrup, right? Or mud. Yeah.
Gross. Gross.
Okay, go play Gang Beasts. Okay, okay, bye
for now!
[Music]
Oops, it's already changing. That's gross.
Yeah, okay let's get the microscope, maybe.
Yeah.
[Music]
