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Final Flashcards

1
Q

Where does the ML cusp of the MX 1M occlude in a Class 1 occlusal relationship?

A

Central fossa of the MD 1M

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2
Q

In a class 3 occlusal relationship where does the MB cusp of the MX 1M occlude?

A

Embrasure space between the MD 1M and 2M

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3
Q

Which acronym applies to posterior tooth contacts in protrusive MD movement?

A

DUML

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4
Q

Which statement best describes the tooth contact in a left working side laterotrusive MD movement?

A

The inner inclines of the MX buccal cusps oppose the outer inclines of the MD buccal cusps

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5
Q

What are the three types of rotational MD movements?

A
  • Horizontal
  • Frontal
  • Saggital
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6
Q

Which pattern shape describes the border movement of the mandible in a horizontal plane?

A

Rhomboid

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7
Q

What occurs when the mandible has opened a distance of 20-25 mm during a posterior border movement?

A

A translational opening continues to a distance of 40-60 mm

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8
Q

Where does translational movement of the mandible occur?

A

In the superior cavity of the TMJ between the superior surface of the articular disc and the inferior surface of the mandibular fossa

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9
Q

Which theory in the history of development of occlusal concepts states that bilateral and balancing tooth contacts for all lateral and protrusive mandibular movements should exist?

A

Balance occlusion

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10
Q

Which statement(s) apply to the term “centric relation”?

A
  • Useful in achieveing a “reproducible” position when constructing complete dentures
  • The articular discs are positioned between the condyles and mandibular fossa
  • The condyles are in their most superoanterior position
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11
Q

Which statement is true about the directions of force on teeth?

A

The PDL effectively dissipates vertical forces to the bone

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12
Q

Which statement describes the term “mutually-protected” occlusion?

A

The anterior teeth guide eccentric movements of the mandible and the posterior teeth stop mandibular closure

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13
Q

Vertical determinants of occlusal morphology include:

A
  • Plane of occlusion
  • Lateral translation
  • Condylar guidance
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14
Q

T/F… Over-bite refers to the amount of horizontal distance between the incisal edges of opposing MX incisors and MD incisors

A

False (vertical overlap of MX anterior teeth below edges of the MD anterior teeth)

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15
Q

T/F… Rotational mandibular movement refers to the simultaneous movement of an object in the same direction

A

False (that is translation)

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16
Q

T/F… The most superior position of the mandibular condyles from which hinge axis movement can occur is called “centric relation position”

A

True

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17
Q

T/F… Frontal (vertical) plane border movements of the mandible is defined by a rhomboid shaped pattern

A

False

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18
Q

T/F… The absence of a slide from centric relation tooth contact (centric occlusion) to the MI position occurs in only about 10% of the population

A

True

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19
Q

T/F… Saggital plane border movements of the mandible is defined by a “shield-shaped” pattern

A

False

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20
Q

T/F… The lingual morphology of the MX anterior teeth determines part of the characteristics of superior contact border movements of the mandible

A

True

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21
Q

T/F… Occlusal changes should not be part of routine TMD management unless the occlusion is orthopedically unstable

A

True

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22
Q

T/F… It is desirable that only the anterior teeth contact in eccentric movement of the mandible and the posterior teeth disclude

A

True

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23
Q

T/F… The rule of thirds is used to determine the mesiodistal arch discrepancy between the MX and MD teeth

A

False (buccolingual?)

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24
Q

T/F… The non-adjustable articulator is only capable of reproducing one (1) occlusal contact position with no duplication of the patient’s eccentric movements

A

True

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25
T/F... The later condylar guidance (bennet angle) setting on a semi-adjustable articulator duplicates the patients protrusive guidance
False (condylar inclination)
26
T/F... A facebow transfer procedure is a procedure used to properly orient the MX cast on a semi-adjustable articulator
True
27
T/F... A fully adjustable articulator uses “pantographic” recording when the condyles are positioned against the disc and fossa without tooth contact
True
28
T/F... A major goal in the selection of an articulator for restorative dentistry is to avoid excess intraoral grinding and minimize chair time
True
29
Which statement is true concerning the horizontal determinants of occlusal morphology?
Horizontal determinants influence cusp position and ridge/groove direction
30
Horizontal determinants of occlusal morphology include
Rotating condyle distance, Lateral translation, Mid-saggital plane
31
Reversible occlusal therapy includes the following treatment(s):
Occlusal splints
32
Choose the one correct criterion from the following statements that is desirable for musculoskeletal stability prior to occlusal therapy.
Condyles are in the most superoanterior position against the posterior slopes of the articular eminence
33
When the middle 1/3 inner incline of a posterior tooth centric cusp in one arch contacts or aligns with the opposing central fossa which of the following treatment(s) may be indicated?
Selective grinding and Crowns and/or fixed prosthodontics
34
Diagnostic casts mounted in centric relation on the articulator can be helpful in evaluation of the following condition(s):
- “CR” to “MI” slide - The static and functional relationships of teeth - The MD movement without the neuromuscular protective mechanisms
35
What is the main advantage of the non-adjustable articulator?
Less time for mounting is required
36
Setting a protrusive condylar inclination on a semi-adjustable articulator allows dentists to create fixed prosthodontic restorations
Cusp height and Fossa depth
37
When providing fixed prosthodontic restorations for a patient with compromised anterior guidance, which type of articulator would be indicated for use?
Fully-adjustable articulator and semi-adjustable articulator
38
When performing Operative Dentistry procedures, a desirable occlusal treatment goal includes:
Carved occlusal restorations in cusp tip to flat surface relationships
39
What is one function of a “Custom anterior guide table”?
To record a desirable anterior guidance from provisional restorations prior to fabricating new anterior restorations
40
The sequence of the delivery of a crown restoration is generally described as:
Adjust proximal contacts, verify marginal fit, and evaluate the occlusion
41
T/F... MD anterior teeth usually contact the MX anterior teeth on the lingual surface 4mm gingival to the incisal edge
True
42
Which statement(s) apply to the term “centric relation”?
- Useful in achieving a “reproducible” position when constructing complete dentures. - The articular discs are positioned between the condyles and mandibular fossa - The condyles are in their most superoanterior position
43
Which statement describes the term “mutually protected” occlusion?
The anterior teeth guide eccentric movements of the mandibular and posterior teeth stop mandibular closure
44
Vertical determinants of occlusal morphology include
Plane of occlusion, lateral translation, and condylar guidance
45
Which statement is true concerning the horizontal determinants of occlusal morphology?
Horizontal determinants influence cusp position and ridge/groove direction
46
T/F... The “Dynamic individual occlusion” concept states that occlusion is dependent on an ideal occlusal configuration
False
47
T/F... The medial wall of the mandibular fossa is usually less steep than the wall directly anterior to the condyles
False
48
T/F... More vertical overlap (VO) in anterior guidance will allow for taller cusps
True
49
T/F... The closer a posterior tooth is to the TMJs the more the occlusal morphology will be influenced by the anterior guidance
False (condylar guidance)
50
T/F... Anterior guidance influences the occlusal morphology of posterior teeth, the closer the tooth is to the anterior teeth
True
51
T/F... The temporomandibular ligament assists in limiting the outward lateral movement of the rotating condyle
True
52
Vertical determinants of occlusal morphology include
Plane of occlusion, lateral translation, and condylar guidance
53
Which statement is true concerning the horizontal determinants of occlusal morphology?
Horizontal determinants influence cusp position and ridge/groove direction
54
When the middle 1/3 inner incline of a posterior tooth centric cusp in one arch contacts or aligns with the opposing central fossa, which of the following treatments may be indicated?
Selective grinding and Crowns and/or fixed prosthodontics
55
Reversible occlusal therapy includes the following treatment(s)
Occlusal splints
56
Diagnostic casts mounted in centric relation on the articulator can be helpful in evaluation of the following condition(s)
- “CR” to “MI” slide - The static and functional relationships of teeth - The mandibular movement without neuromuscular protective mechanisms
57
When providing fixed prosthodontic restorations for a patient with compromised anterior guidance, which type of articulator would be indicated for use?
Fully adjustable articulator and Semi-adjustable articulator
58
T/F... The non-adjustable articulator is only capable of reproducing one occlusal contact position with no duplication of the patient’s eccentric movements
True
59
T/F... An “immediate sideshift” of the orbiting condyle in a lateral translation movement dictates that the posterior cusp heights be shorter
True
60
T/F... A facebow transfer procedure is a procedure used to properly orient the maxillary cast on a semi-adjustable articulator
True

Occlusion (5 decks)

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