Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Advanced Restorative > Comprehensive Final Review > Flashcards

Comprehensive Final Review Flashcards

(95 cards)

Start Studying
1
Q

Pathologic wear occurs when exogenous or endogenous factors accelerate the process of physiologic wear and is:

A

Frequently a multifactorial and variable phenomenon

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Excessive wear of just one tooth, extensive restorations, or the full dentition has been associated with:

A
  1. Supraeruption of the opposing teeth
  2. Inclination of teeth to a contact that has been eroded
  3. Reduction of the vertical dimension
  4. SOME AUTHORS ALSO BELIVE THAT IT CAN BE A CONTRIBUTING FACTOR TO TMD
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Etiologies of MECHANICAL wear:

A

Bs & Ps

  1. Brushing (inadequate technique)
  2. Bruxism
  3. Parafunctional Habits
  4. Premature occlusal contacts
  5. Posterior support (loss)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Characteristics of CHEMICAL wear:

A
  1. PRESENCE OF AMALGAM ISLANDS
  2. presents of grooves & fossae
  3. hypersensitivity
  4. no stains or color changes
  5. wear facets without defined periphery
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Wear in the vertical dimension:

A
  1. It is associated with extensive wear of the dentition and results in a REDUCED OVD/VDO
  2. There is NO evidence to prove that this concept is correct
  3. Some authors agree that in cases where there is extensive wear of the dentition, the wear is compensated by over eruption
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Treatment options for patients with excessive occlusal wear:

A
  1. Do nothing
  2. Prevention of loss of additional dental structure
  3. Restorations to reverse the effects of the loss of the dental structure
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Digital dentures allow for improvements in:

A
  1. adaptation & material properties (leading to better treatment and prognosis)
  2. Esthetic outcomes
  3. Improved process for operator/dentist (leading to better outcomes)
  4. Improved experience for patients (leading to better outcomes)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

The rationale for digital dentures is due to the improvements in:

A
  1. Adaptation of the prosthesis
  2. Retention of the prosthesis
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

How is the adaptation of the prosthesis improved in digital dentures?

A

CAD/CAM produces better adaptation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

How is retention of the prosthesis improved in digital dentures?

A

Milled denture bases are significantly more retentive than heat-polymerized denture bases

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Based on material properties, list in order the strength of the denture materials discussed:

A
  1. Milled resin (strongest)
  2. 3D printed resin
  3. Heat polyermized resin (weakest)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

How are digital dentures and improved process for the operator/dentist?

A
  1. better workflow
  2. fewer clinical appointments
  3. LESS chair time
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

How are digital dentures an improved experience for the patient?

A
  1. better workflow
  2. fewer clinical appointments
  3. LESS chair time
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Discuss the repeatability and customization of a digital denture:

A

Easy to duplicate/adjust (saved on the computer system)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Describe the clinical significance of the differences in physical attributes of a digital denture:

A

Materials with higher flexural strength are less likely to fracture

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What does a digital denture start out as?

A

monolithic denture puck (one block denture puck)

material throughout the puck has the same properties

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Describe the first appointment of the digital denture workflow:

A

Title: Preliminary impressions

Description: On preliminary casts, make a well-fitted custom tray with a occlusal wax rim

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

With digital implant impressions and restorations, both our ____ and ____ are extremely accurate but the correlation between them is the most important thing

A

Planning software and what we can see in the mouth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

With digital implant impressions and restorations, both our PLANNING SOFTWARE and WHAT WE CAN SEE IN THE MOUTH are extremely accurate, but:

A

The CORRELATION between them is the most important thing

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

CBCT indications for implants include:

A
  1. Pre-op analysis
  2. Post-op evaluation
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Give an example of a Pre-op analysis from a CBCT for implants:

A

Preoperative analysis
1. anatomic analysis
2. site development using grafts
3. computer-assisted treatment planning

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Give an example of post-op analysis from a CBCT for implants:

A

Post-operative analysis
1. Diagnosing complications
2. Verifying implant placement

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Requirements of implant placement in a DENTATE case:

A
  1. STL of intraoral scan
  2. DICOM volume of the site
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Can we align an intraoral scan to CBCT?

A

No- CBCTs only visualize hard tissue, so there is no way to align a soft tissue scan

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Designed for the specific implant and used similarly to impression copings for single implants
Scan bodies
26
Scan bodies are used similarly to ____ for single implants
impression copings
27
T/F: many studies hav shown acceptable accuracy with intraoral scanning for single implants
True
28
What are the limitations of scan bodies?
With full-arch prosthesis, intraoral scanning studies have shown MARGINAL DISCREPANCIES GREATER THAN 150 MICROMERTERS, which ultimately lead to future complications
29
What post-op evaluation for endo cases may benefit from use of CBCT?
1. document the success of treatment 2. evaluate healing
30
MOD indirect Onlay parameters (composite or porcelain)
1. Diverge Walls - 5-15 degrees - more divergence than gold inlay - axial walls CANNOT be undercut 2. Break Buccal Contact 3. Smooth gingival margin - NO bevels 4. Have enough clearance for model and die work 5. Internal line angles are ROUNDED 6. Exit angles are 90 DEGREES
31
Describe the walls for an MOD indirect composite or porcelain Onlay:
1. DIVERGE walls 5-15 degrees (more than gold inlay prep) 2. Axial walls CANNOT be undercut
32
What contact should be broken for an MOD indirect composite or porcelain onlay?
Buccal Contact
33
Describe the gingival margin for an MOD indirect composite or porcelain onlay:
Smooth gingival margin, NO bevels
34
For and MOD indirect composite or porcelain onlay, there needs to be enough clearance for:
model and die work
35
Describe the internal line angles and exit angles for MOD indirect composite or porcelain onlay:
Internal line angles are rounded and the exit angels are 90 degrees
36
Indiciation for onlay restoration:
When restoration replaces more than 2/3 the intercuspal distance
37
Describe main benefit to placing an online:
Strength (little possibility of fracture or marginal breakdown overtime)
38
Describe the "conservative" preparation of an onlay:
Much more tooth structure is conserved compared to a full coverage crown
39
Describe the cementation of an onlay:
Can be cemented with fluoride-releasing glass ionomer cement
40
Describe the longevity of an onlay:
Lasts longer than most other restorations
41
What are the disadvantages of an onlay:
1. Cost- not routinely covered by insurance providers 2. Time- requires 2 patient visits due to lab fabrication
42
When to lay a cusp for an onlay:
1. Whenever the BL width of the cavity prep is 1/2 way between the central groove an cusp tip is under cusp coverage 2. 2/3 the way between the central groove and cusp tips, must onlay the cusps 3. Cusps are undermined after caries removal
43
List the indications for placement of a base or liner for an onlay restoration:
1. placed only on the axial wall and pulpal floor as needed 2. The CaOH liner (Dycal) is placed only in the deepest part of the prep to protect the pulp 3. Glass ionomer (Vitrebond) is placed as a base to build the prep to the ideal depth and form
44
CaOH liner:
Dycal - placed in the deepest part of the prep
45
Glass ionomer:
Vitrebond- placed as base builder
46
Both types of provisional restorations can be cemented with:
Tempbond or IRM
47
When cementing a provisional restoration, ____ does not interact well with with acrylic
eugenol
48
When cementing a provisional restoration, eugenol does not interact well with acrylic, so a better choice would be:
Tempbond NE or other non-eugenol temp cements
49
What type of cement should be used to cement a provisional restoration if retention is an issue:
Durelon
50
With a provisional onlay, what instructions might you tell patient for homecare:
1. Floss only in the gingival direction 2. Pull floss through to the buccal below the contact area 3. avoid sticky foods 4. avoid hard foods
51
An onlay should be cemented with:
Any permanent crown & bridge cement - Zinc oxide - Rely X - SpeedCem - glass ionomer (releases fluoride ions)
52
Polymers and application for aligners includes - Tooth movement related to ____ recovery during wire or aligner
ELASTIC STRAIN
53
Unlike ortho wires, aligners are significantly:
affected by stress relaxation
54
Aligner properties are affected by:
1. Material Chemical Structure 2. Material Thickness
55
Give an example of how an aligner property is affected by material chemical structure:
Increase cross-linking and ring structures = less flexible/lower elasticity
56
Increased cross-linking and ring structure -
Less flexible/lower elasticity
57
Give an example of how aligner property is affected by material thickness:
Thicker is stiffer (higher modulus)
58
Patients must wear aligners at least:
20 hours a day (22 is preferable)
59
List the potential concerns with aligner therapy:
1. Eluted polymer breakdown products are released into the oral cavity 2. Nano & microplastic particles (NMP) ingestions and inhalation
60
Because eluted polymer breakdown products are released into the oral cavity (potential concern), _____ polymers may be preferred
Phthalate- free
61
Resins for printing are more cytotoxic compared to:
thermoforming polymers
62
What reduces toxicity with aligner therapy?
1. post-curing and processing 2. time (toxicity decreases with time)
63
- increased particle release with increased wear time - higher levels in the placenta than blood
NMPs (nano & microplastic particles)
64
- Phthalate-free polymers may be preferred - Resins for printing are more cytotoxic compared to thermoforming polymers - Post-curing and processing reduce toxicity - toxicity decreases with time
Eluted polymer breakdown
65
Potential concerns related to aligners:
environmental impact of aligner therapy
66
Aligners are considered:
medical waste
67
List the orthodontic pollution:
1. 3D printed models (casts) 2. Discarded aligners 3. Left over aligners 4. Leftover aligner waste 5. Water waste 6. Plastic cases
68
Advantages of dental ceramics:
1. esthetics 2. biocompatibility 3. preservation of tooth structure
69
What is one of the primary indications for dental ceramics in restorations?
esthetics!!!
70
What makes ceramics so esthetic?
1. mimic the optical properties of natural tooth structure 2. translucency
71
What makes ceramics translucent?
Light can penetrate the material
72
enamel is ___% translucent dentin is ___% translucent
enamel 70 dentin 30
73
Ceramic is considered:
Biocompatible (bio-inert)
74
What do we mean when we say ceramic is biocompatible?
1. No cellular or tissue response 2. Low affinity for attracting and retaining plaque
75
Describe the preparation of an all-ceramic restoration compared to a metal-ceramic restoration:
All ceramic= more conservative preparations
76
All ceramics may be contraindicated in:
limited occlusal space
77
Describe the categories of ceramics:
1. Predominately glass 2. Particle-filled glass ceramics 3. Polycrystalline ceramics
78
Predominately glass ceramic is:
Feldspathic (60-70 MPa)
79
Particle-filled glass ceramic:
Leucite (120 MPa) Lithium Dissilicate (Emax) (360 MPa)
80
Polycrystalline ceramics:
Alumina (600-700 MPa) Zirconia (1120 MPa)
81
Order of strength of different types of ceramics:
1. Feldspathic (weakest) 2. Leucite 3. Lithium dissilicate 4. Zirconia
82
What is important with an anterior tooth preparation?
NO FEATHER EDGES
83
Possible reasons for failure/fracture of all-ceramic preparations:
- 10% higher mismatch in CTE (thermal expansion) between core ceramic and veneering porcelain - Residual stresses within the ceramic - Inadequate material thickness - Inadequate planning
84
Describe the residual stresses within ceramic that lead to failure:
fast cooling or aggressive adjustments after sintering
85
RMGI =
Resin modified glass ionomer (fluoride release)
86
What is required with an adhesive resin cement?
Bonding agent & Primer
87
T/F: Adhesive resin cement is STRONGER than self-adhesive
True
88
What is a drawback of adhesive resin cements?
Limited shade selection
89
Adhesive resin cements may also be known as: (3)
1. Multilink (Ivoclar) 2. Panavia 21 (Kuraray) 3. RelyX ultimate (sM)
90
Interim cement with a higher strength than ZOE:
Zinc Polycarboxylate
91
Why does zinc polycarboxylate have a higher strength than ZOE?
due to solubility
92
Describe the chelation of zinc polycarboxylate?
Bonds to Ca ions
93
Cement that: - contains polyacrylic acid - causes minimal pulp irritation - bonds to calcium ions
Zinc polycarboxylate
94
Zinc polycarboxylate brand names:
Durelon or Ultratemp
95

Advanced Restorative (13 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions