Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

AU17 - Dental Materials 3 Final > Implants > Flashcards

Implants Flashcards

1
Q

What are the three components of an implant?

A

implant Fixture
implant Abutment
implant Restoration

(FAR)

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

What are the desired properties of the implant fixture (the part in the bone)?

A
  • sufficient strength to withstand occlusal force
  • elastic modulus to withstand permanent deformation and optimum force transfer
  • oxide layer to promote integration
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

True or False: the Oxide layer inhibits integration.

A

False, promotes!

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

The ____, _____, and _____ contribute to bone formation on the implant surface.

A

osteoblasts
osteoid
mineralized matrix

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

What consistutes a stable oxide film on the implant surface?

A
  • stability over various pH
  • protective
  • good adherence
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

______ has excellent bio-compatibility.

A

Titanium

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

True or False: Titanium is corrosion resistant.

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Titanium has low ____ and is _____.

A

density

light weight

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is the alpha and beta phase of titanium?

A

alpha: hexagonal, close-packed lattice
beta: body-centered cubic

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

The four grades of commercially pure titanium are based on impurities of ____, _____, and _____.

A

oxygen
iron
Nitrogen (..and maybe Carbon/Hydrogen too)

I.O.N

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

Which grade of titanium is purest?

A

Grade I

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Which grade of titanium is the softest?

A

Grade I

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Which type of titanium is commonly used?

A

Type 4

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Which elements are used as alpha-stabilizers in titanium alloys?

A

aluminum, carbon, gallium, oxygen, nitrogen

C.O.N.G.A

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

Which elements are used as beta-stabilizers in titanium alloy?

A

nickel, copper, palladium, vanadium

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

Which type of titanium is most commonly used for implants?

A

Ti-6Al-4V

```
aluminum = alpha
(vanadium = beta)
~~~

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

What type of implant has been newly developed to use as an esthetic solution for thin gingiva?

A

zirconia

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

True or False: Yttria Oxide is added to zicronia to stabilize it at room temperature.

A

True

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

Typical dimensions of a one-piece zirconia dental implant.

A
  1. 1, 3.3mm diameter

4. 0, 5.5mm abutment height

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

True or False: there is a combo titanium-zirconium implant.

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

What is the percent zirconia in a combo implant?

22
Q

What are the benefits to a zirconia-titanium implant?

A 
higher tensile strength
better bone integration
more bone growth
higher removal torque 
better for narrow spaces
23
Q

How can the implant surface be altered (four ways).

A

Plasma Spraying
Grit Blasting
Acid Etching
Anodization

24
Q

What is plasma spraying?

A

coating of the titanium surface with hydroxyapatite, fluorapatite, or calcium phosphate

25
What is grit blasting?
micro-abrasive blasting with titania, alumina, or calcium phosphate
26
What is acid etching?
roughening of the implant surface via hydrochloric acid, sulfuric acid, or nitric acid at high temperatures
27
What is anodization?
oxide films are deposited on surface through an electrochemical reaction in order to improve adhesion and bonding Anode = titanium Acid = electrolyte
28
What are three examples of biologic coatings that can be added to the implant surface?
- statin- BMP - Antibiotics - Growth Factors (TGFbeta, BMP, etc.)
29
True or False: Zirconia and Titanium abutments can be either prefabricated or custom.
True
30
True or False: Cast noble metal alloy abutments are custom made only.
True, they cannot be prefab
31
True or False: Zirconium is higher in density, Knoop hardness, and Young's Modulus than titanium.
True
32
Describe the milling of zirconia.
1. a thick disc (98mm) is pressed in its green state 2. dry milling 3. sintered with stains added 4. feldspathic procelain added
33
Abutments of zirconia are either milled as one piece or a ______ is cemented.
titanium base
34
An impression is either ____ level or ____ level
implant (fixture) | abutment
35
True or False: the implant level impression can be closed tray or open tray.
True
36
True or False: the Abutment level impression can be closed tray only.
True
37
For an implant level impression, the impression is taken ______.
subgingivally at the fixture level
38
For an abutment level impression, the impression is taken ____.
at the level of the restoration
39
What type of alloy is used for cast abutments?
Type 2 or 3
40
For a screw retained implant crown, describe the steps of fabrication.
1. waxed 2. cut back 3. cast 4. porcelain applied
41
In designing an abutment via CAD/CAM, what are three characteristics that are controlled?
- height-to-base ratio - taper - ensure support for restoration
42
True or False: Titanium abutments can be anodized with gold hues for the anterior esthetic region
True
43
Titanium abutments typically have ____ retained crowns.
cement
44
What is the main benefit of cement retained crowns? other benefits?
esthetics familiar passive seating no access hole
45
What is a disadvantage of cement-retained restorations?
- must have retention and resistance form in abutment | - residual cement could cause soft tissue irritation
46
What is the main advantage to screw-retained restorations? other advantages?
retrievable one piece good for short crowns good for soft tissue visibility of access hole
47
What are the disadvantages to screw retained restorations?
lab cost | visibility of access hole
48
For anterior implants: Zirconia abutments can pair with _____ or _____. Titanium abutments can pair with ______.
Zirconia: 1. Zirconia crown 2. Lithium Disilicate crown (emax) Titanium: 1. PFM crown 2. NOOOOO all ceramic (show through)
49
True or False: For posterior implants, it is acceptable to place a zirconia crown or PFM crown on a titanium abutment.
True
50
True of False: Screw retained crowns are most often PFM.
True
51
Frameworks for implant supported dentures or FPDs can be of what materials?
1. nobel metal 2. titanium * 3. zirconia= only for FPD and hybrids 4. Milled Poly-ether (PAEK, PEEK, PEKK)
52
Which poly-ether material has greater compression strength and is light-weight/rigid?
PEKK **that's the one i'd pick (pekk)**

AU17 - Dental Materials 3 Final (6 decks)

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