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Implants > D3 Midterm > Flashcards

D3 Midterm Flashcards

1
Q

What is the required spatial BL dimension for the placement of a posterior implant?

A

Middle of Ridge

Central Fossa of Posterior Tooth

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2
Q

What is the required spatial BL dimension for the placement of a anterior implant?

A

Cingulum Area

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3
Q

What is the required mm of surounding bones in the BL dimension for the placement of an implant?

A

2mm buccal

2mm lingual

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4
Q

What is the required spatial MD dimension from root to implant?

A

1.5 mm

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5
Q

What is the required spatial MD dimension from implant to implant?

A

3 mm

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6
Q

What is the required spatial apico-occlusal dimension for placement of an implant?

A

3 mm from the CEJ

Allow for running room

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7
Q

What type of Straumann implant is used for Molars?

A

4.8

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8
Q

What type of Straumann implant is used for 2nd molars, anterior max incisors, and canines?

A

4.1

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9
Q

What type of Straumann implant is used for laterals, and 1st pm?

A

3.3

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10
Q

What type of Straumann implant is used for congenitally missing laterals with compromised bone?

A

2.9

Pt responsible for full price, but DMD can restore

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11
Q

What number do all implant codes begin with?

A

6

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12
Q

When does a provisonal code need to be added to the tx plan in fixed cases?

A

cases spanning #5-12

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13
Q

What implant type is used in posterior areas?

A

Tissue level

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14
Q

What implant type is used in the anterior area?

A

Bone Level

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15
Q

With ridge preservation following an extraction, how long does the site need to heal before placing the implant?

A

heal 2 months

3-4 months to restore

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16
Q

How long is required for healing following implant placement?

A

3 months

grafting adds more time: 4-5 months

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17
Q

How much healing time is required after 2nd stage surgery?

A

2 weeks

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18
Q

What is the ideal amount of keratinized tissue surrounding a healing abutment?

A

2 mm

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19
Q

Is a screw, or cement-retained implant indicated when there is limited interocclusal space?

A

Screw-retained

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20
Q

Is a screw, or cement-retained implant indicated when there is inadequate angulation?

A

Cement-retained

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21
Q

What does a FGG include?

A

Epithelium + CT

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22
Q

What does a subgingival restorative margin on an implant create?

A

Microgap = nidus for plaque and bacterial trap

attached gingiva prevents this

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23
Q

What is platform switching, and what is its significance?

A

Wide implant + narrower abutment (mismatch in diameter)

  • Implants preserved more crestal bone than matched ones
    • Except when < 2mm thin mucosal tissues were present
  • Has a horizontal BW component
    • Prevents JE apical migration leading to crestal bone preservation
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24
Q

What is the gold standard for root coverage?

A

Connective Tissue Graft

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25
Q

What are the indications for FGG?

A
  • Inc KT around teeth or implants
  • Inc vestibular depth
  • Augment ST thickness
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26
Q

What is the disadvantage to using Alloderm (Dermis Allograft)?

A

Not predictable for KT graft

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27
Q

Presence of …. KT and a …. biotype around implants is necessary for optimal plaque control and to prevent recession and spread of inflammation.

A

at least 3 mm KT

Thick biotype

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28
Q

Which arch has a lower survival rate for OD?

A

Maxilla

dec quality + quantity of bone

29
Q

For a max OD what does the implant agulation follow?

A

Resorption pattern of bone

30
Q

How many implants are needed for a maxillary od, and where are they placed?

A

Minimum of 4 implants

  • 2 in premaxilla (canine?)
  • 2 in posterior area (premolar)
31
Q

What does the A-P Spread indicate?

A
  • Distance from center of the most anterior implant to a line joining the distal aspect of the 2 most distal implants on each side.
  • Amount of cantilever that can be reasonably placed
    • Usually 2.5x A-P spread
32
Q

What is the prosthetic space required for a FDP OD?

A

7 mm

33
Q

What is the prosthetic space required for a Hybrid OD?

A

12-15mm

34
Q

What is the prosthetic space required for a Bar OD?

A

bar + clips = > 15mm

35
Q

What is the prosthetic space required for a locator OD?

A

10 mm

36
Q

What is the implant position for a mandibular OD?

A
  • As anterior as possible
  • As distant (far apart) as possible
37
Q

When are multiple implants for a mandibular OD recommended? (5)

A
  • Sensitive jaw anatomy
  • Increased occlusal force
  • High retention needs are present
  • When implants length < 8mm, or implants width < 3.5 mm are employed
  • Younger pts or edentulous pts < 10 yrs old
    • Bone preservation
38
Q

What is the prosthetic space measurement needed for OD?

A

> 10 mm

39
Q

What is the implant position for mand OD?

A

Between lateral and canine

Teeth position will determine the implant position - teeth set-up and try in

40
Q

When is a metal reinforced OD used?

A
  • Thin dentures
  • Heavy occlusal forces

no significant success rate in dentures with adequate acrylic thickness + metal reinforced

41
Q

How is the locator height selected?

A
  • 4 ST measurements: D, L, M, B
  • Pick the heighest tissue measurement = locator height selection
      • 1mm in case of doubt
42
Q

How much acrylic do you need to surround the metal housing?

A

at least 2 mm of acrylic should surround the metal housing to avoid denture fracture.

43
Q

What is the vertical component of the Rule of 7?

A
  • min 2 mm space for acrylic
  • 5 mm housing height
44
Q

What is the horizontal component of the Rule of 10?

A
  • 10 mm of denture thickness BL and MD
    • 2.5 mm of space for acrylic surrounding the housing (5 mm width)
      • 2.5 mm (acrylic B) + 5 mm (housing) + 2.5 mm (acrylic L) = 10 mm
45
Q

What is the attachment selection for inaccurate, faulty implant position?

A

Bar design

46
Q

What is the recall and maintence for OD pts?

A

at least every year

47
Q

What part of the locator abutment, must be fixed in the denture, it carries the nylon insert?

A

metal housing

48
Q

What part of the locator abutment is outside of the tissue, and a standardized part for all locators?

A

retentive part

49
Q

What part of the locator abutment is inside the tissue, height varies based on tissue measurements?

A

Tissue height

50
Q

What part of the locator abutment is implant company specific, implant type and size specific?

A

Connection

51
Q

After provisional restorations are placed, how long is it necessary to wait to let soft tissues settle down?

A

at least 1 month

52
Q

Where is the emergence profile measured on an implant?

A

implant platform to the free gingival margin

53
Q

How big should the hole be created in the stock impressions tray per impression coping, for an open tray impression?

A

7 mm

54
Q

What are the limiatations of the Maryland Bridge for a fixed interim restoration PRIOR to implant loading?

A
  • Not easily removable for multiple surgical procedures
  • Failure due to occlusal interferences
55
Q

What are the limiatations of the Provisional FDP for a fixed interim restoration PRIOR to implant loading?

A
  • ONLY indicated when teeth adjacent to the implant site are planned for full coverage restorations
56
Q

What are the limiatations of the Essix for a removable interim restoration PRIOR to implant loading?

A
  • Can’t eat with appliance in
  • Easily fractures
  • Short term only
    • Can lead to posterior open bite is pt wears it 24/7 for > 3 months
    • Routinely evaulate pt for open bite
57
Q

What is the main advantage of the Flipper for a removable interim restoration PRIOR to implant loading?

A
  • Can be easily removed and modified for pts who require multiple surgical procedures
  • Easy to fabricate
  • Inexpensive
58
Q

What are the limiatations of theFlipper for a removable interim restoration PRIOR to implant loading?

A
  • Negative effect on pts speech + comfort
  • Must be removed while eating
  • Uncontrolled tissue pressure in healing bone augmentation sites
  • Must have adequate interocclusal space for prosthesis thickness + strength
59
Q

What are the main characteristics of Jet Acrylic (PMMA) that we are concerned about?

A
  • High exothermic rxn
  • High polymerization shrinkage
60
Q

What are the main characteristics of Bis-Acryli (Integrity) that we are concerned about?

A

More brittle than PMMA

61
Q

What is the healing time prior to implant loading in sites without bone augmentation?

A

3 months

62
Q

What is the healing time prior to implant loading in sites with bone augmentation?

A

4-6 months

63
Q

What is the healing time prior to implant loading in sites with sinus lift + bone augmentation?

A

6-9 months

64
Q

What is surgical sculpting and how is it accomplished?

A

Site development for non-implant sites

Ovate pontic placed into a recent extraction site or concavity in the ST covering the ednetulous ridge created by the surgeon.

65
Q

What is non-surgical sculpting and how is it accomplished?

A

After implant placement

  • Through the use of:
    • Healing abutment
    • Provisional restoration
      • Most predicatable, stabilizes hard + soft tissues
    • Custom abutment
    • Definitive prosthesis
66
Q

What is the limiation to a screw retained restoration in the anterior esthetic zone?

A

Must have lingual access hole

67
Q

Which type of implant restoration allows you to use the abutment to retain the interim restoration?

A

Cement retained

68
Q

What is the follow-up time after placing a provisional?

A

After 2 weeks the surrounding tissues + papilla should be sculpted + matured to the contour of the provisional prosthesis.

Implants (1 decks)

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