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Temporomandibular Joint (TMJ) Anatomy and Disc Displacement Animation

Category: TMJ Videos
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TMJ facilitated. everything you should understand. This video and also variations (in HD) are readily available for immediate download licensing here:
Voice by: Khoi Dao

Learn more regarding TMJ and also TMD below
© Alila Medical Media. All rights booked.
All images/videos by Alila Medical Media are for details functions ONLY and also are NOT intended to replace specialist medical suggestions, diagnosis or treatment. Constantly look for the guidance of a qualified doctor with any type of inquiries you might have pertaining to a clinical problem.
The temporomandibular joint– the TMJ – is the joint in between the lower jawbone – the jaw – and the temporal bone of the head. The TMJ is accountable for jaw activity and also is one of the most secondhand joint in the body. The TMJ is basically the articulation between the condyle of the mandible and the mandibular fossa – a socket in the temporal bone. The special function of the TMJ is the articular disc – a versatile as well as elastic cartilage material that works as a cushion in between both bone surface areas. The disc lacks nerve ends as well as blood vessels in its center and also therefore is insensitive to discomfort. Anteriorly it attaches to lateral pterygoid muscle mass – a muscular tissue of chewing. Posteriorly it continues as retrodiscal tissue fully supplied with blood vessels and nerves.
The jaw is the only bone that relocates when the mouth opens up. The initial 20 mm opening includes only a rotational movement of the condyle within the socket. For the mouth to open bigger, the condyle as well as the disc have to move out of the outlet, ahead and then down the articular prominence, a convex bone surface area situated anteriorly to the socket. This movement is called translation.
One of the most usual disorder of the TMJ is disc variation, and also in the majority of the cases, the disc is dislocated anteriorly. As the disc progresses, the retrodiscal tissue is attracted between the two bones. This could be quite excruciating as this cells is totally vascular and innervated, unlike the disc. The movements made by eating or perhaps talking cause a persistent swelling to the cells leading to inflammation as well as discomfort.
The forward dislocated disc is a challenge for the condyle movement when the mouth is opening. In order to totally open the jaw, the condyle has to jump over the back end of the disc and then into its center. This creates a clicking or popping audio. Upon closing, the condyle slides back from the disc hence one more "click" or "pop". This problem is called disc displacement with decrease
In later stage of disc misplacement, the condyle stays behind the disc regularly, unable to obtain back into the disc, the clicking audio disappeared yet mouth opening is limited. This is usually one of the most symptomatic stage – the jaw is stated to be "secured" as it is incapable to open wide. At this stage the condition is called disc variation without reduction.
Luckily, in bulk of the instances, the problem fixes on its own after time. This is many thanks to a process called natural adaptation of the retrodiscal cells, which eventually comes to be scar tissue as well as could functionally replace the disc. Actually, it ends up being so much like the disc that it is called a pseudodisc.

Marius November 21, 2015 16:00:19


I hope someone will see my post and advise. Thanks!
So, last night I had in-ear headphones into my ears and I was listening to
music. At some point, I felt that my right in-ear has dropped so I tried to
put it back and push it into my ear – in the same time I think I yawned or
opened my mouth – and in that exact same moment I felt a really awful pain
right next to my right year – I believe at the temporomandibular joint.

This morning, when I woke up I had pain the right side of the joint, I had
pain on the right side when I tried to chew + when I was yawning or opening
the mouth wide I was feeling some sort of discomfort on the right side.
It’s like the bones from my jaw don’t properly match on the right side,
when I open the mouth wide and then close it my jaw has a weird zig-zag
move from left to right (it’s like I have something close to the TMJ, like
it has increased or something).

Now I don’t feel any pain anymore, just that TMJ zi-zag movement of the jaw
when I yawn or open the mouth + discomfort on the right site. On top of
that, both of my ears feel really weird, like they are clogged. I hope I
haven’t displaced my mandibula or broken that joint. 🙁

I’ll try to go to a doctor this Monday. I hope I won’t need surgery… :(

    eunyoung kim December 10, 2015 3:14:09

    +Marius i hope u didnt do surgery are you okay right now?

    Joe Hallett December 23, 2015 13:02:32

    If you can’t open without deviating to one side it is probably because the
    joint is locked on one side only. I would see your dentist about it.

Ultima FINAL FANTASY VII Fan January 3, 2016 12:04:25

Pls help, my right jaw has this problem. When I try to move it inward
(left) it get’s blocked or locked, if I keep pushing it. Then I hear a
crack knuckle like sound, and i’m able to move my jaw again. Later, the
whatever comes back and I can’t move my right jaw inward again, so I do the
same thing, just keep pushing it and break that force that holds it back.
The blocker comes back once every like day. But it’s been a few months, and
it comes back less often, maybe once every 3/4 month or more. So that’s
good, BUT I have noticed my right jaw looks bigger, bulgier, and a bit un
even, compared to my left jaw. It is unattractive. :(

    Marcos Sanchez February 18, 2016 9:59:45

    I think I went through that process too, several years ago. You maaaay be
    showing early symptoms of a tmj issue. At the least, try to eat softer
    foods. And as for the jaw looking bigger? I’ve got the same issue. I got an
    x-ray of my head and my jaw was more misplaced than the other side so yeah.
    Take the info how you will, it’s just something to help to think about.

    partsofone March 8, 2016 20:55:43

    +Ultima FINAL FANTASY VII Fan If you’re interested in knowing about how
    certain nutrients should help (boron, glycine and proline seem especially
    important; the latter two are the main aminos in collagen which is needed
    for muscle elasticity) especially over time, I’m happy to look into it for

    Ultima FINAL FANTASY VII Fan March 9, 2016 1:40:10

    +partsofone Thanks for helping out! I would love more help 🙂

Tanya Choice January 9, 2016 13:51:16

It’s so hard to fine excellent videos like these

Ryan Rogers January 15, 2016 1:09:05

if my brother were to punch me in the face will my jaw stop clicking? hes
willing to help

    Ryan Rogers January 28, 2016 4:26:08

    my brother got a lot of satisfaction out of it

    Chartoise May 12, 2016 12:15:51

    +Ryan Rogers OMG! I’m gonna punch myself in the face right now… How hard

    Ryan Rogers May 13, 2016 5:12:12

    too hard … DO IT

    Chester Fritz June 29, 2016 5:42:02

    +Chartoise Hey, dis it work?

    Chartoise June 29, 2016 7:00:17

    +Chester Fritz No it didnt… But it’s pretty much gone now anyways 😛 Took
    about 2 months,

Jacqueline Quinn February 3, 2016 5:11:51

I have had TMJ for most of my life and it’s limited a lot of things I can
do. At the moment my wisdoms are growing in and it’s very painful. The pain
gets so bad I get really bad migraines that I have to lock myself in a
pitch black room with absolutely no sound. This is not new, usually my
migranes put me in this condition but it’s rare when my jaw gets locked
open or shut. For the past few days my jaw has locked open when I eat(soft
foods only such as ramen or bread. just bread) or when waking up. It’s
getting to the point I can’t hide the pain, and I have a high pain
tolerance. I pop pain pills like candy and my wisdoms aren’t grown out
enough to be pulled. I do exorcises when I can, but those are painful too.
I apply hot rice packs to the joint and nothing helps. I can hardly talk
anymore and in order to talk I have to keep my mouth damn near shut. I
can’t take this pain anymore and it’s interfering with my life. What can I
do to make it stop??

    Marcos Sanchez February 18, 2016 9:50:17

    I’ve sought after some help and there’s limited options, unfortunately. The
    first option to help with the wisdom teeth is getting them pulled out
    regardless if they’re developed or not. I had to get mine removed because
    of my tmj issues so the dentist removed my wisdoms by digging for the
    fragmented shards. Granted, there was more blood than the average patient
    but it helped. The second option is to undergo surgery and there’s no way
    in hell my insurance would allow that but it may be an option for you. And
    lastly, live with it. Because the wisdom teeth removal only helped for a
    few days and because my medical insurance didn’t cover the surgery, I’ve
    gotta with it until my jaw falls off. So try one of those options if you
    must but be hopeful. Hope for the best but expect the worse, my mom always

    Jacqueline Quinn February 18, 2016 10:59:59

    +Marcos Sanchez Thank you so much, I’ve been scared to get them removed
    since I can only open my mouth two fingers width, but if it helps I will.
    Did you have to see a special dentist or can a basic dentist do it?

    Marcos Sanchez February 18, 2016 16:01:58

    +Jacqueline Quinn I went for a dentist to have the damned tooth shards
    removed but afterwards I went to see an ent (ear nose and throat) doctor to
    further examine my jaw. I’m glad to at least be of some help

    Jacqueline Quinn February 20, 2016 18:49:06

    +Marcos Sanchez Thank you so much 🙂

Craftie girl100 March 29, 2016 23:17:32

I have locked jaw it so Annoying it hurts so much

Volkner Tang April 14, 2016 16:49:33

The existence of Pseudo-Disc calms me down

hiraeth April 14, 2016 21:12:37

I’m only 16 and I already have TMJ

    Daniella Araujo May 2, 2016 17:08:47

    Same here

    WITHERZ May 14, 2016 10:57:48

    +Daniella Araujo
    im 15

    Xavier Caracho June 4, 2016 10:57:49

    Do I have TMJ if my jaw is already clicking when I only open it slightly or
    when my jaw is clicking if I only open it widely?

    The pariah June 26, 2016 4:10:47

    +Xavier Caracho yeah you have tmj…I chew a pack of juicy fruity the other
    day and now I have it…once I open my mouth about 2/3 it clicks..

    Georgia Stuff July 23, 2016 9:36:34

    I’m 13 and I have one too ;-;

Luis Diaz April 26, 2016 14:41:17

this is bs this started 2 days ago for me so is there anyway to get the
disc back in place ?

    Alila Medical Media April 26, 2016 17:54:03

    +Luis Diaz Some doctors may be able to manipulate it back in place if the
    dislocation is recent, not sure how recent it should be, though.

Shruthi Ravindran May 1, 2016 4:28:17

wonderful video. please keep posting videos like this. helpful in learning.
Thank you !

Daniella Araujo May 2, 2016 17:08:21

Um I’ve had this for about 4 years, not the locking, just the discomfort
and clicking, which is the most uncomfortable part. All non-surgical
methods have failed, and I will have surgery if necessary it’s just that
it’s most common in 20-40 and I’m only 15. Any advice?

    Alila Medical Media May 2, 2016 18:31:03

    +Daniella Araujo If your teeth are mis-aligned you may want to consider
    getting braces. Misalignment of teeth may cause TMJ problems, also check if
    you grind your teeth at night and address that. I would avoid surgery as
    much as possible, it may do more harm than good.

    Daniella Araujo May 2, 2016 19:39:56

    +Alila Medical Media I have braces at the moment and it began far before
    them and as far as teeth grinding it is definitely a possibility but
    assuming the plate solution to reduce grinding doesn’t work, what other non
    surgical options should I consider

    Fathima Azeema May 9, 2016 13:38:16

    I have the same problem and i am goingg to have my surgery on this thusday
    may 12 ans i am 14 nd half

Emily Hill May 4, 2016 17:13:10

Hi Alilia,
I had clicking on one side for 2 years (came out of no where)… then it
all of a sudden stopped a couple months ago. When my one side was still
clicking my MRI showed that both of my discs are displaced but reduce
appropriately… my opening has always been great so I’m confused as to
what could be happening. I have lots of physical therapy on my muscles.
Could the disc be recaptured? Can your opening still be great if the disc
is displaced without reduction? I had the MRI and then two weeks later is
when it stopped popping and hasn’t popped since (sometimes when I brush my
tongue – theres slight crack sound when I open wide) or else I would have
gotten another. My doctor told me my pain is muscular.

    Alila Medical Media May 4, 2016 17:58:21

    +Emily Hill If the clicking stopped and you can open normally, you probably
    got your pseudodisc formed, which is great. If you still have pain, it’s
    likely to be muscular like your doctor said. You can watch this video to
    understand more :

Aaron Patterson June 4, 2016 9:54:51

So if I hear a clicking noise around the TMJ but no pain, jaw restrictions
or soreness, should I have nothing to worry about? Or will it get worse in
the future? Will it go away? Whenever I step I hear crackling in my ears
due to the tmj and its very annoying, I hope it goes away soon.

    SuperJosie42 June 17, 2016 22:15:57

    That’s how mines started out and I ignored it thinking it would go away, I
    now have pain every time I move my mouth and can’t open it more than an

Anyssa Sainz June 20, 2016 7:25:52

If the scar tissue becomes similar to the disk will it still click? Ive had
tmj for years and my jaw pops twice on both sides snd its still does it.

    That One Guy June 21, 2016 15:05:18

    Go to a jaw specialist. If it’s been years there’s a high chance that the
    disks will never go back in and you will need monthly check ups for the
    specialist to put it back in place. This happened to my mom on both sides
    and now the slip out all the time and she always need sit to get put back

Whirlwind June 29, 2016 23:25:32

Could this have anything to do with braces? I got TOP ONLY braces 6 months
ago and a few days after, I had a sore jaw and experienced clicking as I
closed my jaw as well and sharp pains. Could this be from the braces?

cockroach12 June 30, 2016 16:01:54

does this scar tissue always develop?

shmayme July 1, 2016 5:05:54

our bodies are weird

vasundhara reddy July 14, 2016 14:34:09

nice presentation .

Teamcraft Studio July 21, 2016 21:33:15

Is this normal?
When I walk my feet makes a crack sound effect?
Let’s say all my joints are some way are making cracking sound effect. Is
this normal?

I’m 17

Pedro Dominguez July 25, 2016 19:44:45

I have had pain for 1 month now. It

Phase 1: Pain in my left and right side. Could not close down mouth

Phase 2: Pain went away but clicking sound remained in left side

Phase 3(current): only my left side hurts and I am unable to chew food
without pain. Very soft foods is what I eat, will this ever go away?

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