Occlusion Final

Question 1

The position of the temporomandibular ligament is designed to limit what type of movement in the mandible?

Answer 1

Pure Hinge Axis Rotational Movement

Question 2

The full length of the temporomandibular ligament occurs at no more than ______ of opening

Answer 2

15-20 mm

Question 3

After the temporomandibular ligament is at full length (15-20 mm), what occurs at that pivot point?

Answer 3

Translation

Question 4

The anterior border of the articular disc is _____ than the posterior border

Answer 4

Thinner

Question 5

Where does most of the mandibular movement occur?

2 places

Answer 5

Intermediate zone (thinnest)
Anterior region

Question 6

What is an incorrect statement about the retrodiscal tissues of the temporomandibular joint?

Answer 6

They are inelastic

Question 7

T/F

The retrodiscal tissues of the TMJ are highly innervated and vascular

Answer 7

True

Question 8

T/F

The retrodiscal tissues of the TMJ can be painful when subjected to force or “loading”

Answer 8

True

Question 9

T/F

Any type of trauma can cause inflammation surrounding the articular disc of the TMJ

Answer 9

True

Question 10

Regarding maximum intercuspation, what has an important relationship in Class 1 Occlusion?

Answer 10

1st Molars and Canines

Question 11

T/F
For maximum intercuspation:
There must be adequate overlap of the Max and Mand teeth.
Occlusal forces should be exerted down the long axis of posterior teeth.
There should be multiple occlusal contacts on all teeth that adequately distribute forces.

Answer 11

True

Question 12

T/F

For Maximum intercuspation, there must be simultaneous contact of only the posterior teeth (not the anterior teeth)

Answer 12

False

Question 13

T/F

For Maximum intercuspation, anterior tooth occlusal contacts should dominate over the posterior teeth

Answer 13

False

Question 14

T/F

For Maximum intercuspation, posterior teeth display “passive” occlusal contact (minimal contact)

Answer 14

False

Question 15

What is the muscle of mastication that retracts or retrudes the mandible and positions the mandible to obtain centric relation?

Answer 15

Temporalis

Question 16

The Medial Pterygoid is the primary muscle to produce what movement?

Answer 16

Mediotrusive

Question 17

What is the muscle of mastication that is progressively active during closing movement of the mandible and frequently displays a spasm as a result of some types of occlusal dysfunction?

Answer 17

Superior Head Lateral Pterygoid

Question 18

During normal closure of the mandible against the maxilla, the posterior fibers of the temporalis muscle will contract.

Answer 18

Incorrect

Question 19

During normal closure of the Mand against Max:
Condyle will be primarily within Glenoid Fossa
Medial Pterygoid will contract
Masseter contracts
Suprahyoids, Infrahyoids relax
Posterior neck muscles minimally contract to hold Cranium in place

Answer 19

Correct

Question 20

Functional Activity influences the Arch Alignment of the teeth.

Answer 20

Incorrect

Question 21

The following influence the Arch Alignment of the teeth:
Max/Mand arch size
Occlusal contact relationship
Musculature w/ facial-lingual effects
Missing teeth
Fractured cusps
Carious teeth
Rotated/ectopical teeth

Answer 21

Correct

Question 22

The permanent Maxillary 2nd Molar will articulate with what teeth?

Answer 22

Mand 2nd and 3rd Molars

Question 23

What is an example of an ideal force application on teeth?

Answer 23

Occlusal forces on Posterior teeth occur long axes to the roots

Question 24

In the cusp-fossa relationship of posterior teeth, the preferred name for contact between the Maxillary Lingual cusps and Mandibular Facial cusps is:

Answer 24

Centric

Question 25

When attempting to describe ideal tooth positions in stationary occlusion, the Centric Relation and Maximum Intercuspation positions do not have to be coincident.

Answer 25

Incorrect

Question 26

``` Stationary Occlusion: Precise Max/Mand Precise, Minimal, Short Lasting Arches receive contact then release with movement Contacts anatomically driven ```

Answer 26

Correct

Question 27

Where will the mesiolingual cusp of the Mand 2M be in relation to the Maxilla?

Answer 27

Lingual embrasure between Max 1 and 2M

Question 28

When a patient is in the intercuspal position, the distofacial cusp of the Max 1M is located...

Answer 28

In the distofacial groove of the Mand 1M

Question 29

During a right sided lateral movement of the mandible, the distolingual cusp of the Mand 1st Left Molar from where to where?

Answer 29

Lingual sulcus of Max 1M Diagonally to Anterior portion of palate

Question 30

When viewing a moving occlusion diagram with the base of the bold black arrow in the central fossa of the Mand Left 1M and the arrow is pointing through the lingual groove toward the tongue, this is designating...

Answer 30

Laterotrusive movement

Question 31

When viewing a moving occlusion diagram: Base bold black arrow at Central Fossa of Mand Left 1M, arrow pointing toward facial surface, what movement is designated?

Answer 31

non-functional

Question 32

When viewing a saggital pantographic tracing of the Mand border movements at the level of the Mand CI's, the position that is most anterior is:

Answer 32

Maximum Protrusion

Question 33

When viewing a Frontal Pantographic tracing of Mandibular border movements at the level of the Mand CI's, the most superior position is:

Answer 33

Maximum Intercuspation

Question 34

When viewing a saggital pantographic tracing of Mandibular border movements at the level of the Left Condyle, the movement or position that is the most superior is:

Answer 34

Working Movement

Question 35

If a clinician wants to increase the horizontal overlap on Anterior Teeth but keep vertical overlap unchanged... (2 correct, 2 incorrect statements)

Answer 35

Correct: Posterior Cusps flatter Anterior Guidance angle Decrease Incorrect: Posterior Cusps taller Incisal edges Max/Mand in close contact

Question 36

When the posterior and anterior controlling factors are not identical, the mandibular teeth most affected by the condyle is the...

Answer 36

3rd Molar

Question 37

If a patient has a flatter plane of occlusion, the curve of Spee radius will be:

Answer 37

Longer

Question 38

Immediate Sideshift is when initial Mand lateral translation movement occurs _____ the condyle translates from the fossa. The greater the Immediate Sideshift, the ____ the posterior cusps must be and the ______ the opposing fossae and grooves.

Answer 38

Before Shorter Wider

Question 39

For the horizontal determinants of occlusion, the ______ the distance of the tooth from the axis of rotation (condyle), and the ________ the angle formed by laterotrusive and mediotrusive pathways.

Answer 39

Greater Wider

Question 40

When evaluating the horizontal determinants of occlusal morphology, the greater the distance from the rotating condyle, the...

Answer 40

Wider the angle between Laterotrusive and Mediotrusive pathways

Question 41

What are the advantages/disadvantages to using a Semiadjustable Articulator? 2 correct statements

Answer 41

Replicates Specific condylar movement | Excellent for Routine dental treatment

Question 42

What are the advantages/disadvantages to using a Semiadjustable Articulator? 2 Incorrect statements

Answer 42

Less time trasferring info from pt. to articulator than nonadjustable one Less expensive than nonadjustable

Question 43

The arbitrary mounting of Maxillary and Mandibular casts is part of a Fully Adjustable articulator

Answer 43

Incorrect

Question 44

Fully adjustable articulator: Exact Hinge Axis location of condyles for facebow Pantographic recording Centric relation Occlusal record

Answer 44

Correct

Question 45

Incorrect statement of Working Side Occlusal Prematurity:

Answer 45

Facial inclines of the Max posterior lingual cusps

Question 46

``` Working side occlusal prematuraties: lingual inclines Max Post facial cusps facial inclines Mand Post facial cusps lingual inclines Max Post lingual cusps facial inclines Mand post lingual cusps ```

Answer 46

Correct

Question 47

If a patient has a premature occlusal contact on the lingual inclines of the Mand Post facial cusps, these would be known as...

Answer 47

Non-working interference

Question 48

If a patient has a premature contact, or closure interference, that involves direct contact with the triangular ridge of the mesiofacial cusp on a Max 1M and the facial ridge of the mesiofacial cusp of the Mand 1M, the clinical condition would see:

Answer 48

Mand deviating opposite side of premature contact

Question 49

What does Myofacial Pain Syndrome not entail?

Answer 49

Pain abnormalities only systemic in origin | this is an incorrect statement

Question 50

Myofacial pain syndrome entails: pain of regional nature originating at trigger point within muscle, facia pain that refers to other areas autonomic abnormalities (blanching, cold, sweat, erythema, hyperesthesia, hyperalgesia)

Answer 50

Correct

Question 51

2 Incorrect statements concerning stages of muscle disorders and how trismus displays various clinical attributes:

Answer 51

Pain is never variable | Process is irreversible

Question 52

Trismus: Incisal-interocclusal distance less than 18mm Presence of Hard end feel Secondary to infection, hematoma, and trauma

Answer 52

Correct

Question 53

A trigger point on the anterior temporalis will refer pain to...

Answer 53

Maxillary Incisors

Question 54

The internal derangement of the articular disc making opening and closing clicks is called...

Answer 54

Disc displacement with Reciprocal Click

Question 55

An INcorrect statement regarding intracapsular disorders:

Answer 55

Having a patient protrude their mandible against resistance as they bite will increase pain

Question 56

Intracapsular Disorders: Interarticular pressure and Mand movement elicit pain Increase TMJ pressure elicits pain If biting tongue blade painful = Inferior Lat. Pterygoid Biting opposide side affected joint increases pain

Answer 56

Correct

Question 57

Pain Conditions that might be confused with Temporomandibular Disease (2 correct)

Answer 57

Necrotic pulp pain with limited mouth opening Cervical spine pain produces reflex muscle response in trigeminal area - muscles of mastication

Question 58

T/F Temporomandibular Disease: Biting on opposite side of affected joint will increase pain. Has increased interarticular pressure and Mandibular movement

Answer 58

False

Question 59

The proper clinical method to resolve a spontaneous dislocation or subluxation is...

Answer 59

Manipulation of mandible by clinician