Implant Final Flashcards
1
Q
Two implant mandibular complete denture is:
A
implant retained
2
Q
Implant success rate in a well controlled diabetic:
A
85.5- 100%
3
Q
Modern root form success rate:
A
90-100%
4
Q
Father of modern implants:
A
branemark
5
Q
Blades & root form implant are:
A
endosteal
6
Q
Roughened implant surface results in ___ to the implant surface
A
Bone apposition
7
Q
Collagen fibers to implant are oriented:
A
parallel
8
Q
The biologic width of implants:
A
3mm
9
Q
T/F: BOP alone is adequate for diagnosis of peri-implantitis. BOP is a clinical sign of inflammaton
A
s1: false
S2: true
10
Q
What scans show a lingual undercut?
A
CBCT & Medical CT
11
Q
Absolute contraindication for implants:
A
IV Bisphosphonates
12
Q
A
d
13
Q
A
b
14
Q
Papilla height is dependent on:
A
bone level next to tooth side
15
Q
What is the safe zone between implant and neurovascular structures (mandibular canal, anterior loop, mental foramen etc.)
A
2mm
16
Q
An implant placed 4-8 weeks after extraction is type:
A
II
17
Q
Difference in accuracy between open and closed tray impression techniques:
A
open= more accurate
18
Q
What is the minimum vertical space for screw retained?
A
4mm
19
Q
What is the minimum vertical space for cement retained?
A
7mm
20
Q
What is the minimum acrylic required?
A
2mm
21
Q
What type of cantilever is more favorable?
A
mesial is more favorable
22
Q
Important for cantilevers?
A
- number, diameter, length & position of implants
- MD length of cantilever
- Dimension of connector
23
Q
Technical problem with tooth-implant supported FPD:
A
Natural tooth intrusion with telescopic crown
24
Q
Complications with ICFPD:
A
- Screw loosening
- Veneer fracture
- Abutment screw fracture
- Implant fracture
(all of the above)
25
2 implants of 3.5 diameter. What is the distance between them?
13mm
26
What has the shortest papilla height?
implant-implant
27
What has the longest implant height?
tooth-pontic
28
Average CIR?
there isn't one, it has no implication
29
T/F: Crown can Abe longer than implant
True because no CIR
30
Single maxillary anterior implant, soft tissue expected?
(you lose some ___ soft tissue in the first year)
buccally
31
First thing in socket immediately after extraction:
blood clot
32
Which is socket preservation?
1. atraumatic extraction
2. immediately placing graft to maintain the volume of the socket
33
Is the buccal or palatal bone thicker in the maxilla?
palatal
34
Measuring for locator selection from implant platform to:
highest point of gingiva
35
NOT a sign of peri-implantntis?
thickening of mucosa
36
What is the difference between the vascularity in tooth versus implants?
tooth has more vascularity than implants
37
How often should implant patients with pathology go?
6 months
38
Minimum space required between tooth an implant?
1.5 mm
39
Thickness of acrylic in over denture even over the locator abutments?
2.5 mm (2.0 mm)
40
Radiograph follow up protocol normal implant patient:
1. initial placement
2. @ 6 months
3. @ 12 months
4. every 2 years if no pathology is present
41
According to regulation, which of the following is true?
a- mandibular over denture needs 2 implants
b- mandibular overdneture needs 4 implants
c- maxillary over denture needs 2 implants
mandibular overdenture needs 2 implants
42
Screw retained vs. cement retained question
cement:
- more permanent
- you can't screw it off like a screw-retained
- because of this if the abutment becomes loose, the entire restoration is ruined
- hard to remove excess cement which can lead to peri-implantitis which can ultimately result in implant failure
- minimum vertical space = 7mm
screw-retained:
- provides retreivablility
- less esthetic
- less strong
- minimum vertical space = 4 mm
43
Definition of closed tray versus open tray
44
T/F: a verification radiograph of the fully seated impression coping is typically done before taking the impression:
true
45
What resorbs first after impression?
bundle bone
46
T/F: Most people have thinner buccal bone than lingual bone
true
47
Can the gingival contour change due to provisional crown?
yes
48
T/F: CBCT less radiation than medical CT
true
49
T/F: CBCT is better at soft tissue imaging than medical CT
False
50
Which type of xray can you check magnification by placing a 5mm bead?
pano
51
If x-ray shows non-seating of impression coping, what do you do:
reposition & reseat until fully seated
52
All are true of TISP (tooth-implant supported prosthesis) EXCEPT:
a- definite cementation (permanent; no screw retention or temp cement)
b-short span
c-stress breaking connectors
d-avoid telescopic crowns (no copings)
c- stress breaking connectors (cannot have stress breakers, need to be rigidly connected to tooth & implant)
53
What is the biologic width around a tooth?
sulcus: 1 mm
epithelial: 1mm
CT: 1mm
54
Connection around the implant includes:
hemidesmosomes just epithelial
55
What is an implant analog?
identical with special modifications to be in stone
56
direct contact between living bone and implant seen on light microscope
osseointegration
57
Is the abutment smaller on the implant or the switch?
on implant
58
____ is smaller on implant than switch
abutment
59
Part used for making an implant impression:
impression coping
60
amount of contact between crestal bone and contact?
5 mm
61
What is the minimal density scan?
DEXA
62
T/F: Oral bisphosphoonates for less than 4 years does not have an impact?
True
63
Ideal AIC in diabetics is less than 7 but can still place implants at 8%
true, true
64
Success of implant entails:
a- no pain
b- 0.1mm bone loss after more than 1 year
c- 1mm bone loss after 1 year
d- all of the above
d
65
What is the best for of INTRAORAL x-ray technique?
parallel
66
Eposteal =
subperiosteal
67
Transosteal=
dtransmandibular
68
Modern root form=
endosteal
69
What does roughening the implant surface result in?
bone apposition to implant surface
70
Average length of biologic width with implants:
3mm
(1mm sulcus + 1mm epithelial + 1 mm CT)
71
Immediate implant placement=
type 1
72
Implant placement 12-16 weeks post extraction:
type III
73
Implant placement 16+ weeks post extraction:
type IV
74
What type of cantilever is more favorable?
mesial
75
Important for cantilevers
a- diameter, length, number & position of implants
b- MD length of cantilever
c- dimension of connector (DOC)
d- All of the above
d- all of the above
76
What is socket preservation?
immediately placing graft to maintain the volume of the socket
77
Measuring for locator selection from implant platform to:
highest point of gingiva
78
Minimum space required between tooth and implant:
1.5mm
79
Thickness of acrylic in over dentures even over the locator abutments?
2mm (2.5 could also be right)
80
T/F: According to regulation, mandibular over denture needs 2 implants:
true
81
T/F: You take an xray after placing impression coping
true
82
T/F: Most people have thinner buccal bone than lingual bone:
true
83
Identical to implant with special modification to be in stone:
implant analog
84
Amount of contact between crestal bone and contact
5mm
85
Lingual concavity viewed on what form of radiograph?
medical CT and CBCT
86
The following describes:
- no pain
- 0.1 mm loss following the first year
- 1mm loss the first year
successful implant
87
