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OCCLUSION > Quiz 1-Ideal Occlusion (TMJ) & M of M's > Flashcards

Quiz 1-Ideal Occlusion (TMJ) & M of M's Flashcards

1
Q

BIG TERM! What term describes the ENTIRE cranial-mandibular complex that emcompases the articulation of the teeth and the surrounding structures that produce and limit movement?

A

CRANIO-MANDIBULAR Apparatus

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2
Q

The Temporal Bone forms the _______ aka the ______ fossa. The shape of this fossa determines the many ______ of mandibular movement.

A

Glenoid aka mandibular fossa…..limits

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3
Q

What is the portion of the mandible that articulates in the mandibular fossa?

A

the CONDYLE

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4
Q

The ______ of the heads of the condyle determine the limits of mandibular movement.

A

SHAPE

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5
Q

The mandible is the ONLY bone in the body that possesses two __________.

A

Axes of rotation!

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6
Q

Ligaments supporting the TMJ & Mandible _______ mandibular movement and __________ the musculature, especially during EXTREME movement.

A

LIMIT….PROTECT

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7
Q

What are the 3 NO’s! of the Ligaments that support the TMJ/Mandible???

A

1.NON-elastic 2.NON-contractile 3.Do NOT have innervation

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8
Q

The Stylo-Mandibular ligament limits excessive ________ movement of the mandible.

A

PROTRUSIVE

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9
Q

The Spheno-Mandibular ligament plays a role of limiting _________ movement AND ________ mandibular movement.

A

PROTRUSIVE and LATERAL (to either R or L side)

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10
Q

The position of the Tempromandibular Ligament is designed to limit the pure _____ axis _______ movement of the mandible.

A

HINGE….rotational

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11
Q

The full length of the tempromandibular ligament occurs at no more than ___-___mm of opening, as measured between the incisal edges of the _________.

A

15-20mm opening….Maxillary and Mandibular incisors (ANTERIOR teeth only!)

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12
Q

The TemproMandibular disc is also named the _______ disc.

A

Articular Disc

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13
Q

The Tempromandibular/Articular Disc: Consists of _______ connective tissue.

A

Fibrous (NOT HYALINE)

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14
Q

The Tempromandibular/Articular Disc: Interfaces between the _______ and the _______ bone.

A

Mandible and Temporal bone

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15
Q

The Tempromandibular/Articular Disc: Is somewhat _______ in texture.

A

Pliable (hard rubber)

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16
Q

The Tempromandibular/Articular Disc: It is _______ in shape.

A

Bi-Concave

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17
Q

The Tempromandibular/Articular Disc: ________ ligaments attach it to the condyle in a medial and lateral position.

A

Collateral Ligaments

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18
Q

The Tempromandibular/Articular Disc: Does not have any ________ nor _________.

A

innervation nor vascularization

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19
Q

Maximum Intercuspation: terminology describing ______ position.

A

TOOTH!

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20
Q

Maximum Intercuspation: Also known as _______ (__) which is now OBSOLETE. (wait so why are we learning it :)

A

Centric Occlusion (CO) colorado is obsolete!

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21
Q

Maximum Intercuspation: Is commonly referred to as _______ occlusion or _______ centric because the patient can achieve this position by “______”.

A

Habit…habit…habit

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22
Q

Maximum Intercuspation: describes an _______ relationship or tooth relation.

A

Occlusal

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23
Q

Maximum Intercuspation: the teeth are contacting in a position that the patient finds the most ________.

A

comfortable

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24
Q

Maximum Intercuspation: its always easily ________, but not always _________ by the patient.

A

easily achievable, not always reproducible

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25
Clinical conditions re: the SLIDE from C.R. to M.I.--- Only ___% of the population have no discrepancy/slide.
15%
26
Clinical conditions re: the SLIDE from C.R. to M.I.--- for the ___% of patients with a SLIDE after the first occlusal contact in CentricRelation is obtained (this is usually 2 or more ______ teeth), the patient continues to close and slide on the inclines of ________ teeth.
85%...posterior...POSTERIOR
27
Clinical conditions re: the SLIDE from C.R. to M.I.--- the maxillary and mandibular teeth will come together more completely in the ________ position.
Maximim Intercuspation
28
Clinical conditions re: the SLIDE from C.R. to M.I.--- The condyles must move out of their most ideal position when the teeth come fully together and this position is ______, _______, and slightly _______ to the maximum intercuspation position.
anterior, superior, and slightly lateral
29
What are the two terms for describing LATERAL eccentric movements of the mandible?
1.Canine Protected Articulation 2.Group Function Occlusion
30
Terms for describing LATERAL eccentric movements of the mandible: Canine protected articulation implies that only the _______ are touching during the complete extent of ______ movement.
canines.....lateral
31
Terms for describing LATERAL eccentric movements of the mandible: Group function occlusion entails that one or more of the ______ teeth, in combination with ______ are in contact during complete extent of ______ movement.
posterior...anterior....lateral
32
Terms for describing LATERAL eccentric movements of the mandible: Which of the two terms is the IDEAL occlusial scheme?
Canine Protected Articulation
33
Terms for describing LATERAL eccentric movements of the mandible: Which of the two terms is the secondary or more practical scheme?
Group function
34
Terms for describing LATERAL eccentric movements of the mandible: _____ patients usually exhibit group fxn more then canine protected.
Older
35
Summary of Ideal Occlusion: Centric relation and maximum inculpation occur _______.
simultaneously
36
Summary of Ideal Occlusion: All teeth contact ________.
simultaneously
37
Summary of Ideal Occlusion: All occlusal forces on posterior teeth are directed down the _____ of the teeth.
Long axis
38
Summary of Ideal Occlusion: Posterior tooth contacts ______ over anterior tooth contacts.
DOMINATE (50 shades anyone?)
39
Summary of Ideal Occlusion: All eccentric movements are guided by the _______ teeth.
ANTERIOR
40
Summary of Ideal Occlusion: No crossover contacts on _______ teeth should be seen.
Posterior
41
Correct alignment of the Articular Disc is slightly _______ and the thinnest, most articulated portion is in the ______ section.
slightly anterior....middle
42
THE MASSETER: ________ the mandible in a superior direction to eventually contact the maxillary teeth, this is considered ______ function.
ELEVATE...normal
43
THE MASSETER: causes ________ of the teeth, which is considered _______ function.
CLENCHING...PARAnormal function
44
THE MASSETER: AIDS in ________ movement, but is not the primary muscle to produce _______ movement.
Protrusive...protrusive
45
THE MASSETER: MINIMALLY aids in _______ movement, it is a very MINOR player to produce _______ movement.
lateral...lateral
46
the MEDIAL pterygoid: _______ the mandible in a superior direction and eventually contact the maxillary teeth, considered ______ function.
ELEVATE...normal
47
the MEDIAL pterygoid: AIDS in ______ movement, but it is NOT the primary muscle to produce ______ movement.
protrusive...protrusive
48
the MEDIAL pterygoid: THE BIG ONE!! Produces ________ movement, and it is the PRIMARY muscle to perform this action!
MEDIOTRUSIVE
49
the MEDIAL pterygoid: is a minor player in the paranormal function _______ of the teeth.
clenching
50
What is the only Paranormal function of the Medial Pterygoid?
Clenching!
51
THe LATeral PTERYgoid INFerior HEad::::: it is active during _______ movement of the mandible which is considered ______ function.
Opening...normal
52
THe LATeral PTERYgoid INFerior HEad:::::it is the PRIMARY muscle involved in _______ movement which is a _______ function.
protrusive...normal
53
THe LATeral PTERYgoid INFerior HEad::::: it is the PRIMARY muscle that produces _______ movements which is a normal function.
lateral!
54
THe LATeral PTERYgoid INFerior HEad:::::it is the most frequent M of M to exhibit a _______ as a occlusial dysfunction (paranormal function).
SPASM
55
Which M of M cannot be palpated by the clinician?
Inferior head of the lateral pterygoid
56
Which M of M is the most frequent to spasm??
inferior head of the lateral pterygoid
57
tha SUPRAhyoids!! _______ the hyoid bone.
elevate
58
tha SUPRAhyoids!! ______ the base of the tongue.
elevate
59
tha SUPRAhyoids!! _______ the mandible when the _____ bone is fixed.
depress the mandible when the hyoid bone is fixed
60
tha SUPRAhyoids!! assist in stabilizing the _______ and the _______ during normal mandibular movements.
Cranium and mandible
61
tha SUPRAhyoids!! important for control over the ______ and the _______ during swallowing an speaking activities.
pharynx and esophagus
62
The EARLY phase of the normal jaw opening movement: the _____ head of the _____ pterygoid contracts, it is a controlled, ______, and consistent movement.
inferior head of the lateral pterygoid...slow
63
The EARLY phase of the normal jaw opening movement: the condyle will move _______, actually down the slope of the _______ at the beginning of its posterior border.
anteriorly....articular eminence
64
The EARLY phase of the normal jaw opening movement: the ______ will move with the condyle! Because of the the _____ head of the ______ pterygoid muscle ______ contracting.
articular disc.....superior head of the lateral pterygoid minimally contracting
65
The EARLY phase of the normal jaw opening movement: the superior ________ tissues are slightly taut as a counterbalance between articular disc and s. lat. pterygoid.
retrodiscal
66
Muscle VECTORS (whats our vector, Victor?) in a saggital plane: Anterior temporalis (2)
superior and slightly anterior
67
Muscle VECTORS (whats our vector, Victor?) in a saggital plane: middle temporalis (2)
superior and slightly posterior
68
Muscle VECTORS (whats our vector, Victor?) in a saggital plane: posterior temporalis (2)
posterior and slightly superior
69
Muscle VECTORS (whats our vector, Victor?) in a saggital plane: masseter (2)
superior and slightly anterior
70
Muscle VECTORS (whats our vector, Victor?) in a saggital plane: posterior digastric (2)
superior and posterior
71
Muscle VECTORS (whats our vector, Victor?) in a saggital plane: inferior head of lateral pterygoid (1)
anterior
72
What is ALWAYS the starting point for the 8 stage sequence of normal condyle-disc movement???
Centric Relation!!!
73
Unilateral contraction of the medial pterygoid will produce ________ movement (movement of the mandible to the ______ side toward the midline)..ALSO some ______ will occur.
MedioTrusive movement...SAME side...protrusion
74
The "______ region" is loose vascular tissue which is the posterior attachment for the articular disc and it also fills with _____.
"bilaminar region"...fluid
75
The ______ area is the posterior part that splits between the inferior and superior retrodiscal ligaments, _______ to the articular disc.
Retrodiscal area...posterior
76
_________ will exist only when the stable intercuspal position of teeth is in HARMONY with the musculoskeletal stable position of the condyles in fossa.
Orthopedic Stability
77
Orthopedic stability is needed to minimize ________.
muscle dysfunction!!!
78
Orthopedic stability: with the teeth apart the ______ muscles attempt to maintain the condyles in their musculoskeletally stable positions.
elevator
79
Orthopedic stability: when the teeth come together and there is a ________ contact, occlusal and joint instability will result.
single tooth

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