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Module 4 - mastication and Occlusion > jaw relationships and dynamic occlusion > Flashcards

jaw relationships and dynamic occlusion Flashcards

1
Q

what is the contact relationship of teeth/ equivalent?

A

occlusion

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2
Q

what is the dynamic relationships of teeth when in sliding contact?

A

articulation

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3
Q

what is the positional relationship which the mandible bears to the maxilla?

A

jaw relationship

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4
Q

what is the rest/postural position maintained by?

A

minimal muscle activity or muscle elasticity

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5
Q

what is the ICP?

A

intercuspal position
- maximal intercuspation/ interdigitation

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6
Q

what is RCP?

A

retruded contact position/ ligamentous position
- condyles retruded in glenoid fossa
- teeth in contact 1-2mm posterior to ICP

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7
Q

what muscle retrudes the jaw?

A

horizontal parts of temporalis

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8
Q

what is OVD?

A

occlusal vertical dimension
- face height with teeth in ICP

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9
Q

what is RVD?

A

rest/ postural vertical dimension
- face height with mandible in rest position

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10
Q

what is the freeway space?

A

space between teeth in rest position

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11
Q

how is freeway space measured?

A

RVD-OVD

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12
Q

what size should the freeway space be?

A

2-5mm

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13
Q

what are the anatomical guide planes?

A

incisal guidance
cuspal inclines
TMJ

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14
Q

what is the working side?

A

the side to which teeth move

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15
Q

how is the working side guided?

A

canine guidance
group function

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16
Q

what is the non-working side?

A

the side away from which the teeth move to

teeth dont contact

17
Q

what happens to the condyle in the working side?

A

rotates around vertical axis

lateral bodily movement

18
Q

what is bennett movement?

A

lateral bodily movement of the condyle at the working side

19
Q

what happens to the condyle at the non-working side?

A

moves downwards
forwards over eminence
move medially

20
Q

what muscle pulls condyle forward?

A

lateral pterygoid

Module 4 - mastication and Occlusion (8 decks)

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