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Basic RCD Final > Exam Review > Flashcards

Exam Review Flashcards

1
Q

Benefits of proper festooning?

A
  1. Prevents chronic biting of lips, tongue, or cheeks
  2. Improves esthetics
  3. Provides support of lips and cheeks
  4. Facilitates stability and control
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2
Q

Steps to lab remount?

A
  1. Clean denture (keep attached to mounted cast)
  2. Attach mounted cast to index cast using plaster.
  3. Check for incisal pin discrepancy
  4. Adjust using straight lab handpiece until contacts on CR and excursive are appropriate.
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3
Q

Purpose of lab remount

A
  1. Correct processing errors

2. Re-establish OVD

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4
Q

Difference between reline and rebase

A

Reline - Re-surfacing the denture base with new base material
Rebase - Replacing entire denture base material on existing prosthesis without changing occlusal relationship of denture teeth

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5
Q

Indication for reline/rebase?

A
  1. Immediate Denture (6-12 months post-fab)
  2. Residual alveolar ridges are resorbed and poor denture base adaptation
  3. Patient cannot afford new dentures
  4. Fabrication of new dentures is ill advised due to physical or mental stress to patient.
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6
Q

When to lab remount?

A

When OVD error on remounted casts is >1 mm

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7
Q

Steps to chair side remount

A
  1. Coat mand teeth with vasoline
  2. Place occlusal surface of sand denture in water bath
  3. Prepare green/grey stick compound over flame, place on occlusal surface and then temper in water
  4. Seat dentures and have patient close in CR just short of CR
  5. Remove from mouth, chill in water, then trim material to only cusp-tip indentions
  6. Have patient close into CR
  7. Articulate mand denture against maxillary denture using remount patties
  8. Make protrusive record
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8
Q

Schuyler’s rules for selective grinding

A
  1. Establish OVD in CR
  2. Make protrusive movements/corrections
  3. Make laterotrusive movements/corrections
  4. Make mediotrusive movements/corrections
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9
Q

If cusp is high in CR and eccentric, do you reduce cusp or deepen fossa?

A

Reduce cusp

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10
Q

If cusp is high in centric but not in eccentric, do you reduce cusp or deepen fossa?

A

Deepen fossa

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11
Q

Combination Syndrome presentation

A
  1. Papillary hyperplasia
  2. Anterior max ridge resorption
  3. Extrusion of lower ant teeth
  4. Downgrowth of maxillary tuberosities and pneumatization of sinuses
  5. Loss of OVD
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12
Q

Overdenture abutment should only contact denture base when?

A

During function

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13
Q

Advantages of retention of teeth as over denture abutments?

A
  1. Maintain proprioception
  2. Increased retention
  3. Increased masticatory forces
  4. Maintain alveolar arch
  5. Patient acceptance
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14
Q

Minimum amount of bone required to retain a tooth as an over denture?

A

6 mm of tooth in bone

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15
Q

“Please compress alveolar plates post-extraction” - Routine or non-routine instruction to OS for immediate CD’s?

A

Not-routine

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16
Q

Three advantages of lingualized occlusion?

A
  1. Maintain esthetics
  2. Chewing efficiency
  3. Less technique sensitive than bilateral balanced
17
Q

Two disadvantages of lingualized occlusion?

A
  1. Wear of denture teeth

2. May not eliminate rotation of denture base

18
Q

What are the two approaches to immediate denture sequencing?

A
  1. Extract all and then deliver

2. Extract post first except first premolar, interim prosthesis, then all and delivery

19
Q

5 Advantages of immediate denture

A
  1. Patient not without teeth
  2. OVD maintained
  3. Reduces bleeding, swelling, and pain
  4. Aids in positioning of teeth
  5. Wound protection
20
Q

5 Disadvantages of immediate dentures

A
  1. Loss of proprioception
  2. Psychological devastation
  3. Loss of function and efficiency
  4. Technically difficult
  5. No esthetic try-in appointment
21
Q

Preferred occlusal scheme for immediate dentures

A

Monoplane

- Adapts better over time and favorable of reline and rebase

22
Q

Five reasons for over denture vs immediate denture

A
  1. Proprioception
  2. Masticatory forces
  3. Preservation of arch
  4. Patient psychology
  5. Masticatory performance
23
Q

Hanau’s Quint - Five factors of occlusion

A

CG x IG / OP x CH x CC

Condylar and incisor guidance / occlusal plane, cusp height, and compensating curve

24
Q

Out of the five factors of occlusion in Hanau’s Quint, which one is out of control of the provider?

A

Condylar guidance

25
Q

Who used the five factors to create a formula for balanced occlusion?

A

Thielman

26
Q

What are the three classifications of denture tooth forms and the cusp angles of each?

A
  1. Anatomic - 30, 33, and 45
  2. Semi-anatomic - 20 and 22
  3. Non-anatomic - 0, 10, and 12.5
27
Q

Who is associated with neutrocentric concept in CD fabrication?

A

Devan

28
Q

Guiding principles when setting posterior denture teeth?

A
  1. 0 degree IG
  2. 0 degree CG
  3. Cuspless teeth (non-anatomic)
  4. No compensating curve
  5. Flat occlusal plane
29
Q

What is the mode of retention for plastic denture teeth with diatorics? (Mech vs Chemical)

A

Mechanical

30
Q

Two causes of whistling while speaking

A
  1. Palate too narrow

2. Maxillary premolars too far medial

31
Q

Most common post-op reason for denture soreness or instability

A

Occlusal discrepancies

32
Q

What do you selectively grind for protrusive movements?

A

BULL
DUML
- Buccal upper, disto lingual inclines
- Lower lingual, mesial buccal

33
Q

Criteria for over denture abutment tooth selection

A
  1. Number/distribution - 4 or fewer retainable teeth (2 in each quadrant ideal)
  2. Shape/size - 6 mm of tooth in bone
34
Q

Contraindications for reline/rebase

A
  1. Excessive ridge resorption
  2. Abused soft tissue
  3. Poor esthetics
  4. Current dentures cause speech problems
  5. Severe bony undercuts
  6. Denture teeth worn
  7. Teeth not properly related to the ridge
35
Q

Examples of tissue conditioner

A

Viscogel and coe-comfort

36
Q

Open or closed technique more commonly used for relining?

A
  1. Closed technique
37
Q

What are the two types of impression techniques for closed mouth impression technique? What materials used for each?

A
  1. Functional (use tissue conditioner - viscogel or coe-comfort)
  2. Static (use pvs)
38
Q

Advantages of digital dentures

A
  1. Time
  2. Pre-cured resin
  3. Portability
  4. Permanent digital record
39
Q

Disadvantages of digital dentures

A
  1. Cost
  2. Cases with limited restorative space
  3. Static occlusal record
  4. Not entirely digital (still need impressions)
  5. Many steps condensed in one visit

Basic RCD Final (4 decks)

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