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Tim's Cards > Occlusion Final > Flashcards

Occlusion Final Flashcards

1
Q

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

A

Pure Hinge Axis Rotational Movement

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2
Q

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

A

15-20 mm

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3
Q

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

A

Translation

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4
Q

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

A

Thinner

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5
Q

Where does most of the mandibular movement occur?

2 places

A 
Intermediate zone (thinnest)
Anterior region
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6
Q

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

A

They are inelastic

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7
Q

T/F

The retrodiscal tissues of the TMJ are highly innervated and vascular

A

True

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8
Q

T/F

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

A

True

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9
Q

T/F

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

A

True

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10
Q

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

A

1st Molars and Canines

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11
Q

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.

A

True

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12
Q

T/F

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

A

False

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13
Q

T/F

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

A

False

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14
Q

T/F

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

A

False

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15
Q

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

A

Temporalis

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16
Q

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

A

Mediotrusive

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17
Q

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?

A

Superior Head Lateral Pterygoid

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18
Q

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

A

Incorrect

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19
Q

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

A

Correct

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20
Q

Functional Activity influences the Arch Alignment of the teeth.

A

Incorrect

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21
Q 
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
A

Correct

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22
Q

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

A

Mand 2nd and 3rd Molars

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23
Q

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

A

Occlusal forces on Posterior teeth occur long axes to the roots

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24
Q

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

A

Centric

25
Q

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

A

Incorrect

26
Q 
Stationary Occlusion:
Precise Max/Mand
Precise, Minimal, Short Lasting
Arches receive contact then release with movement
Contacts anatomically driven
A

Correct

27
Q

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

A

Lingual embrasure between Max 1 and 2M

28
Q

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

A

In the distofacial groove of the Mand 1M

29
Q

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

A

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

30
Q

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…

A

Laterotrusive movement

31
Q

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?

A

non-functional

32
Q

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:

A

Maximum Protrusion

33
Q

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

A

Maximum Intercuspation

34
Q

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:

A

Working Movement

35
Q

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

A

Correct:
Posterior Cusps flatter
Anterior Guidance angle Decrease

Incorrect:
Posterior Cusps taller
Incisal edges Max/Mand in close contact

36
Q

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

A

3rd Molar

37
Q

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

A

Longer

38
Q

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.

A

Before

Shorter
Wider

39
Q

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.

A

Greater

Wider

40
Q

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

A

Wider the angle between Laterotrusive and Mediotrusive pathways

41
Q

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

A

Replicates Specific condylar movement

Excellent for Routine dental treatment

42
Q

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

A

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

Less expensive than nonadjustable

43
Q

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

A

Incorrect

44
Q

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

A

Correct

45
Q

Incorrect statement of Working Side Occlusal Prematurity:

A

Facial inclines of the Max posterior lingual cusps

46
Q 
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
A

Correct

47
Q

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

A

Non-working interference

48
Q

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:

A

Mand deviating opposite side of premature contact

49
Q

What does Myofacial Pain Syndrome not entail?

A

Pain abnormalities only systemic in origin

this is an incorrect statement

50
Q

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)

A

Correct

51
Q

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

A

Pain is never variable

Process is irreversible

52
Q

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

A

Correct

53
Q

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

A

Maxillary Incisors

54
Q

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

A

Disc displacement with Reciprocal Click

55
Q

An INcorrect statement regarding intracapsular disorders:

A

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

56
Q

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

A

Correct

57
Q

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

A

Necrotic pulp pain with limited mouth opening

Cervical spine pain produces reflex muscle response in trigeminal area - muscles of mastication

58
Q

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

A

False

59
Q

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

A

Manipulation of mandible by clinician

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