Tmj

Front 1

The _____________ is a joint on each side of the head that allows for movement of the mandible for speech and mastication

Back 1

Tempormandibular joint (TMJ)

Front 2

The TMJ connects the condyle of mandible to the

Back 2

temporal bone

Front 3

The TMJ allows for

Back 3

rotation and translation

Front 4

The rotation movement of jaw ______ and ______

Back 4

open and close

Front 5

The translation movement is ________ and ________

Back 5

forward and backward

Front 6

The combination of rotation and translation allow for

Back 6

Lateral and medial movement

Front 7

Temporomandibular Joint is a _____________ joint

Back 7

ginglymoarthrodial joint

Front 8

_________ is a gliding joint that allows for gliding movement

Back 8

Arthrodial

Front 9

The Condyle of TMJ articulates with the temporal bone in the

Back 9

articular (glenoid) fossa

Front 10

The condyle and the temporal bone are separated by an

Back 10

articular disc

Front 11

True or False
The Articular disc is only disc of its kind in body

Back 11

True

Front 12

The articular disc seperates the TMJ into 2 areas, the

Back 12

- Superior component (upper synovial cavity)
- Inferior Compartment (lower synovial cavity)

Front 13

___________________ allows for the rest of the opening of the mouth and also allows for translation down the articular eminence of the temporal bone

Back 13

The Superior component (upper synovial cavity)

Front 14

___________________ allows for pure rotation of condylar head and allows for the first 20 mm of the opening of the mouth

Back 14

Inferior compartment (lower synovial cavity)

Front 15

The Main components of TMJ include:

Back 15

- Mandibular condyles
- Articular surface of the temporal bone
- joint capsule
- Articular disc
- Ligamnets
- lateral pterygoids

Front 16

The ____________ completely encloses TMJ

Back 16

joint capsule

Front 17

The __________ is a fibrous membrane that surrounds joint and incorporates articular eminence

Back 17

joint capsule

Front 18

The joint capsue is attached to

Back 18

articular eminenence, articular disc, and mandibular condyle neck

Front 19

The Articular (Joint) Disc is between the

Back 19

temporal bone & condyle

Front 20

The Articular (joint) disc functions to

Back 20

articulate the surfaces against both temporal bone and condyles

Front 21

The articular (joint) disc divides TMJ into

Back 21

Upper & lower synovial cavites

Front 22

The articular (joint) disc is a biconcave structure that attaches to the medial and lateral poles of the

Back 22

mandibular condyle

Front 23

The posterior portion of the articular (joint) disc is called the

Back 23

retrodiscal tissue

Front 24

True or False
The posterior portion of the articular (joint) disc is connective tissue that is vascular and innervated

Back 24

True

Front 25

Pain is induced during anterior disc displacement because

Back 25

the condyle is pressing on this area

Front 26

There are 3 ligaments associated with TMJ:

Back 26

- Temporomandibular ligament
- Stylomandibular ligament
- Sphenoimandibular ligament

Front 27

the __________________ is located on the lateral side of each joint and forms a reinforcement of the capsule of the TMJ

Back 27

Temporomandibular ligament

Front 28

The temporomandibular ligament is actually the thickened lateral portion of the capsule and prevents

Back 28

excessive retraction

Front 29

The Temporomandibular ligament is divided into 2 parts:

Back 29

Outer oblique portion & Inner horizontal portion

Front 30

The ____________ is a variable ligament that is formed from thickened cervical fascia in the area

Back 30

Stylomandibular ligament

Front 31

The Stylomandibular ligament seperates the ___________ region from the _________ region

Back 31

- infratemporal region
- parotid region

Front 32

The ________________ runs from styloid process of temporal bone to angle of mandible

Back 32

Stylomandibular ligament

Front 33

The _____________ is not a portion of the TMJ, but is located on the medial side of the mandible

Back 33

Sphenomandibular ligament

Front 34

The ______________ runs from the spine of sphenoid bone to the lingual of mandibular foramen and is the landmark for the administration of inferior
local anesthetic block

Back 34

Sphenomandibular ligament

Front 35

Ligaments limit

Back 35

border movements

Front 36

Movement past limits constitute

Back 36

abnormal function and even pathology

Front 37

The TMJ is innervated by the

Back 37

- Mandibular branch of trigeminal nerve (V3)
- Auriculotemporal
- Masseteric

Front 38

The TMJ is supplied by the

Back 38

Superficial temporal branch of the external carotid artery

Front 39

during jaw movements, only the _________ moves

Back 39

mandible

Front 40

The 2 basic movements are:

Back 40

gliding & rotational

Front 41

_________ movement occurs between disc and the articular eminence of the temporal bone in the upper synovial cavity, with disc plus the condyle moving forward or backward, and up in the articular eminence

Back 41

gliding

Front 42

gliding movement allows lower jaw to move forward or backward which =

Back 42

protrusion & retraction

Front 43

__________ movement occurs between disc and the condyle in the lower synovial cavity.

Back 43

rotational

Front 44

Rotational movement allows for _________ or __________ of mandible

Back 44

- depression or elevation of mandible

Front 45

Normal movements =

Back 45

excursions

Front 46

________ bringing lower jaw forward

Back 46

protrusion

Front 47

________ bringing lower jaw backward

Back 47

retrusion

Front 48

Movement of TMJ is primarily by four muscles of mastication

Back 48

- lateral pterygoid
- medial pterygoid
- masseter
- temporalis

Front 49

__________ opens mouth

Back 49

lateral pterygoid

Front 50

Contraction of lateral pterygoid pulls disc and condyle forward within __________ and down in _____________

Back 50

-glenoid fossa
- articular eminence

Front 51

__________ pulls up angle of mandible

Back 51

medial pterygoid & masseter

Front 52

__________ pulls up on coronoid process

Back 52

temporalis muscle

Front 53

muscles that close mouth

Back 53

- medial pterygoid
- masseter muscle
- temporalis muscle

Front 54

Temporomandibular Disorder (TMD) pain is generally due to one of three reasons

Back 54

- Disc displacement
- Myofascial pain dysfunction syndrome, primarily involving the muscles of mastication
- Degenerative joint disease (AKA osteoarthritis)

Front 55

_______________ is organic degeneration of the articular surfaces within TMJ

Back 55

Degenerative joint disease (AKA osteoarthritis)

Front 56

Myofascial pain dysfunction can be caused from

Back 56

- Overusage of the muscles
- parafunctional habits (Excessive gum chewing, Biting habits (nails, pencils, etc), Grinding habits, Clenching habits
- Other causes include infection, Trauma, Bruising / scarring,Trigger points in muscle tissue (Myofascial pain syndrome)

Front 57

Most common disorder is

Back 57

disc displacement

Front 58

____________ is when the Articular disc moves out from between the condyle and the fossa, so that the mandible and temporal bone contact is made on something other than the articular disc

Back 58

disc displacement

Front 59

_______________ is when the Articular disc stays anterior to the condylar head upon closing

Back 59

Displacement without reduction

Front 60

_______________ is when the Articular disc goes posterior to condylar head upon closing and popping or clicking can be heard

Back 60

Displacement with reduction

Front 61

_____________ is the most common form of arthritis

Back 61

Osteoarthritis

Front 62

____________ is a condition in which low-grade inflammation results in pain in the joints, caused by wearing of the cartilage that covers and acts as a cushion

Back 62

Osteoarthritis

Front 63

in osteoarthritis more wear = __________, and decreased movements may cause muscles to atrophy and ligaments to become lax

Back 63

more pain

Front 64

Other problems associated with TMD include:

Back 64

- Subluxation (dislocation with TMD)
- Bruxism

Front 65

____________ is a condition in which a person opens his or her mouth too wide and is unable to close it again; head of condyle moves to far anteriorly on the articular eminence & when patient tries to close and elevate mandible, the condylar heads cannot move posteriorly because their muscles have become spastic

Back 65

Subluxation (dislocation of both joints)

Front 66

Treatment of Subluxation (dislocation of both joints) requires repositioning of the __________ by relaxing the muscles and carefully moving the mandible down and back allowing the condylar heads to assume normal posterior position in relation to articular eminence

Back 66

condyles

Front 67

___________ is a condition in which a person grinds their teeth and usually occurs nocturnally

Back 67

Bruxism

Front 68

Treatment for Bruxism includes

Back 68

NSAIDs, nightguard, muscle relaxers

Front 69

The __________Hinge joint allows for motion in one plane, forward and backward

Back 69

Ginglymo