Implant Final Flashcards

1
Q

Two implant mandibular complete denture is:

A

implant retained

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2
Q

Implant success rate in a well controlled diabetic:

A

85.5- 100%

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3
Q

Modern root form success rate:

A

90-100%

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4
Q

Father of modern implants:

A

branemark

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5
Q

Blades & root form implant are:

A

endosteal

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6
Q

Roughened implant surface results in ___ to the implant surface

A

Bone apposition

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7
Q

Collagen fibers to implant are oriented:

A

parallel

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8
Q

The biologic width of implants:

A

3mm

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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

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10
Q

What scans show a lingual undercut?

A

CBCT & Medical CT

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11
Q

Absolute contraindication for implants:

A

IV Bisphosphonates

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12
Q
A

d

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13
Q
A

b

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14
Q

Papilla height is dependent on:

A

bone level next to tooth side

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15
Q

What is the safe zone between implant and neurovascular structures (mandibular canal, anterior loop, mental foramen etc.)

A

2mm

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16
Q

An implant placed 4-8 weeks after extraction is type:

A

II

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17
Q

Difference in accuracy between open and closed tray impression techniques:

A

open= more accurate

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18
Q

What is the minimum vertical space for screw retained?

A

4mm

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19
Q

What is the minimum vertical space for cement retained?

A

7mm

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20
Q

What is the minimum acrylic required?

A

2mm

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21
Q

What type of cantilever is more favorable?

A

mesial is more favorable

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22
Q

Important for cantilevers?

A
  1. number, diameter, length & position of implants
  2. MD length of cantilever
  3. Dimension of connector
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23
Q

Technical problem with tooth-implant supported FPD:

A

Natural tooth intrusion with telescopic crown

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24
Q

Complications with ICFPD:

A
  • Screw loosening
  • Veneer fracture
  • Abutment screw fracture
  • Implant fracture

(all of the above)

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25
Q

2 implants of 3.5 diameter. What is the distance between them?

A

13mm

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26
Q

What has the shortest papilla height?

A

implant-implant

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27
Q

What has the longest implant height?

A

tooth-pontic

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28
Q

Average CIR?

A

there isn’t one, it has no implication

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29
Q

T/F: Crown can Abe longer than implant

A

True because no CIR

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30
Q

Single maxillary anterior implant, soft tissue expected?

(you lose some ___ soft tissue in the first year)

A

buccally

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31
Q

First thing in socket immediately after extraction:

A

blood clot

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32
Q

Which is socket preservation?

A
  1. atraumatic extraction
  2. immediately placing graft to maintain the volume of the socket
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33
Q

Is the buccal or palatal bone thicker in the maxilla?

A

palatal

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34
Q

Measuring for locator selection from implant platform to:

A

highest point of gingiva

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35
Q

NOT a sign of peri-implantntis?

A

thickening of mucosa

36
Q

What is the difference between the vascularity in tooth versus implants?

A

tooth has more vascularity than implants

37
Q

How often should implant patients with pathology go?

A

6 months

38
Q

Minimum space required between tooth an implant?

A

1.5 mm

39
Q

Thickness of acrylic in over denture even over the locator abutments?

A

2.5 mm (2.0 mm)

40
Q

Radiograph follow up protocol normal implant patient:

A
  1. initial placement
  2. @ 6 months
  3. @ 12 months
  4. every 2 years if no pathology is present
41
Q

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

A

mandibular overdenture needs 2 implants

42
Q

Screw retained vs. cement retained question

A

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
Q

Definition of closed tray versus open tray

A
44
Q

T/F: a verification radiograph of the fully seated impression coping is typically done before taking the impression:

A

true

45
Q

What resorbs first after impression?

A

bundle bone

46
Q

T/F: Most people have thinner buccal bone than lingual bone

A

true

47
Q

Can the gingival contour change due to provisional crown?

A

yes

48
Q

T/F: CBCT less radiation than medical CT

A

true

49
Q

T/F: CBCT is better at soft tissue imaging than medical CT

A

False

50
Q

Which type of xray can you check magnification by placing a 5mm bead?

A

pano

51
Q

If x-ray shows non-seating of impression coping, what do you do:

A

reposition & reseat until fully seated

52
Q

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)

A

c- stress breaking connectors (cannot have stress breakers, need to be rigidly connected to tooth & implant)

53
Q

What is the biologic width around a tooth?

A

sulcus: 1 mm
epithelial: 1mm
CT: 1mm

54
Q

Connection around the implant includes:

A

hemidesmosomes just epithelial

55
Q

What is an implant analog?

A

identical with special modifications to be in stone

56
Q

direct contact between living bone and implant seen on light microscope

A

osseointegration

57
Q

Is the abutment smaller on the implant or the switch?

A

on implant

58
Q

____ is smaller on implant than switch

A

abutment

59
Q

Part used for making an implant impression:

A

impression coping

60
Q

amount of contact between crestal bone and contact?

A

5 mm

61
Q

What is the minimal density scan?

A

DEXA

62
Q

T/F: Oral bisphosphoonates for less than 4 years does not have an impact?

A

True

63
Q

Ideal AIC in diabetics is less than 7 but can still place implants at 8%

A

true, true

64
Q

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

A

d

65
Q

What is the best for of INTRAORAL x-ray technique?

A

parallel

66
Q

Eposteal =

A

subperiosteal

67
Q

Transosteal=

A

dtransmandibular

68
Q

Modern root form=

A

endosteal

69
Q

What does roughening the implant surface result in?

A

bone apposition to implant surface

70
Q

Average length of biologic width with implants:

A

3mm

(1mm sulcus + 1mm epithelial + 1 mm CT)

71
Q

Immediate implant placement=

A

type 1

72
Q

Implant placement 12-16 weeks post extraction:

A

type III

73
Q

Implant placement 16+ weeks post extraction:

A

type IV

74
Q

What type of cantilever is more favorable?

A

mesial

75
Q

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

A

d- all of the above

76
Q

What is socket preservation?

A

immediately placing graft to maintain the volume of the socket

77
Q

Measuring for locator selection from implant platform to:

A

highest point of gingiva

78
Q

Minimum space required between tooth and implant:

A

1.5mm

79
Q

Thickness of acrylic in over dentures even over the locator abutments?

A

2mm (2.5 could also be right)

80
Q

T/F: According to regulation, mandibular over denture needs 2 implants:

A

true

81
Q

T/F: You take an xray after placing impression coping

A

true

82
Q

T/F: Most people have thinner buccal bone than lingual bone:

A

true

83
Q

Identical to implant with special modification to be in stone:

A

implant analog

84
Q

Amount of contact between crestal bone and contact

A

5mm

85
Q

Lingual concavity viewed on what form of radiograph?

A

medical CT and CBCT

86
Q

The following describes:

  • no pain
  • 0.1 mm loss following the first year
  • 1mm loss the first year
A

successful implant

87
Q
A