periodontium of dental implants Flashcards

(69 cards)

1
Q

Basic parts of an implant
and their relation to teeth

A

implant body
abutment
crown

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2
Q

why titanium

A
  • Excellent biocompatibility
  • Low weight/high strength
  • Excellent corrosion resistance
  • Contains a titanium oxide layer that
    promotes adhesion of osteogenic cells
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3
Q

The interface of implant and abutment is at the
bone

A

bone level

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4
Q

The interface of the implant and abutment is at
the tissue

A

tissue level

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5
Q

interface of implant can be either as

A

tissue or bone

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6
Q

adv/disadv of bone level

A
  • Better esthetics, no
    metal collar
  • Can achieve primary
    closure if needed
  • Microenvironment
    allows of bacteria to be
    present at bone level
  • Less cleansable
  • Harder to see residual
    cement
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7
Q

adv/disadv of tissue level

A
  • Collar creates a
    “biologic width”
  • Bacteria is at tissue
    level, away from the
    bone
  • Metal collar may show
    through
  • More cleansable
  • Easier to see residual
    cement
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8
Q

types of protheses

A

Single crowns, FPDs, implant
supported RPDs,
overdentures, hybrid
dentures (All on 4/All on X)

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9
Q

implant retained

A

removable

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10
Q

implant supported

A

fixed

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11
Q

A stable implant relies on direct structural and functional
connection between vital bone and the surface of an implant

A

osseointegration

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12
Q

Factors that determine successful
osseointegration:

A

-Biocompatibility of the implant surface
-Macro and microscopic nature of the implant surface
-Status of the implant site (non infected bone, bone quality)
-Surgical technique
-Undisturbed healing
-Long term loading and prosthetic design

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13
Q

patient factors

A

medical history
1. diabetes
controlled vs. uncontrolled
2. osteoporosis and bisphosphonate use
not a contraindication to implant placement

social history
1. smoking
-increased failure of dental implants
84% vs 98%
-depends on use- heavy or light

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14
Q

osseointegration clinically:

A
  1. immobile
  2. clear sound to percussion
  3. no pain or infection
  4. no parethesia
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15
Q

osseointegration radiographically:

A
  1. no radiolucent peri-implant space
  2. minimal bone loss
    <1mm remodeling
    <0.1mm/year after the first year
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16
Q

Bone first forms on the implant surface

A

contact osteogenesis

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17
Q

Bone formation progresses from
implant surface to existing bone

A

contact osteogenesis

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18
Q

roughs surface implants

A

contact osteogenesis

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19
Q

Bone forms on the surface of the
existing bone

A

Distance Osteogenesis

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20
Q

Bone formation progresses from existing bone to implant surface

A

Distance Osteogenesis

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21
Q

Smooth or machined surface implants

A

Distance Osteogenesis

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22
Q

IMPLANT placement timing options

A
  1. immediate- time of extraction
  2. delayed- 6-10 weeks after ext
  3. late- 6 months or more after ext
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23
Q

type D1 (bone density and quality)

A

homogenous compact bone

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24
Q

type D2 (bone density and quality)

A

thick layer of compact bone around a core of dense trabecular bone

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25
type D3 (bone density and quality)
thin layer of compact bone around dense trabecular bone
26
type 4 (bone density and quality)
thin layer of cortical bone around core of low-density trabecular bone
27
Initially, implants have mechanical stability
primary stability
28
Over time, the primary stability ______ but the secondary stability or biological stability _____
decreased increases
29
why dont wanna do implant tooth early
when mechanical and biological are good enough????idk
30
implant loading immediate:
* Within 48 hours of placement * Lower implant survival * Parameters should be ideal
31
implant loading early
* Prior to 3 months
32
implant loading conventional
after 3 months
33
Differences comparing the periodontium of a tooth to a dental implant
1. less vascularity 2. no PDL- relying on bone 3. fewer gingival fibers 4. collagen fibers parallel the implant (fibers do not insert into cementum like natural tooth)
34
(peri-implant tissues) Connective tissue: * Circular fibers form a _____ around the implant * Forms a _______ attachment to the implant and abutment * Forms a “soft tissue seal”
“cuff” hemidesmosome
35
peri-implant mucosa buccal surface:
1. 3-4mm high on avg 2. core of connective tissue -primarily collagen fibers, very lil fibroblasts -high collagen fiber content, low cellular content *orthokeratinized epithelium
36
buccal surface epithelium
orthokeratinized
37
peri-implant mucosa inner surface:
* Thin barrier epithelium * Like junctional epithelium * Connective tissue adhesion * Larger dimension of supracrestal attachment than teeth!
38
No vascular supply from PDL so sources are
* Alveolar bone * Supraperiosteal vessels * Connective tissue
39
less vascular supply=
less immune system regulation
40
Supracrestal Attachment for implants: teeth:
3-4mm 1 mm epithelium 2 mm connective tissue teeth: 2mm * 0.97mm epithelium * 1.07mm connective tissue so more CT around implants!!*
41
implant: *___mm PD * ____mm buccal mucosa thickness * Shorter papilla height, less papilla fill
2.9mm 2.0mm
42
implant failures classified
surgical mechanical esthetic biological
43
(lack of osseointegration, improper placement, infection, etc)
surgical
44
(screw loosening, abutment fracture, implant fracture, etc)
mechanical fracture
45
(metal collar show through, smile line concerns, long crowns, etc)
esthetic
46
* Peri-implant mucositis * Peri-implantitis
biological
47
Peri-Implant Health
1. free of inflammation -no BOP -np suppuration -no erythema or edema 2. stable probing depths 3. no radiographic bone loss following initial healing
48
Peri-Implant Mucositis signs of inflammation
BOP erythema, edeme
49
Peri-Implant Mucositis no radiographic bone loss
reversible if etiology is controlled -if not controlled, may develop peri-implantitis
50
Peri-Implant Mucositis etiology: plaque biofilm prevalence of implants to have this peri-implant mucositis:
43%
51
Peri-Implant Mucositis equivalent to ____ in normal tooth
gingivitis
52
Peri-Implantitis
start seening bone loss
53
Peri-Implantitis signs of inflammation
BOP erythema, edema
54
Peri-Implantitis radiographic bone loss
increasing probing depth, compared to time of restoration
55
Peri-Implantitis etiology: plaque biofilm and prevalence of this:
22%
56
risk factor of Peri-Implantitis
* History of periodontitis, poor plaque control, no regular maintenance care after placement * Data is not conclusive for smoking and diabetes
57
difference between healthy, peri-implant mucositis, peri-implantitis
BONE LOSS
58
* Peri-implant mucositis = * Peri-implantitis =
gingivitis periodontitis
59
What if you’ve never seen the patient before?
If no previous radiographs/history: * Radiographic bone loss ≥ 3mm * Probing depths ≥ 6mm =Diagnostic for peri-implantitis
60
not all bone loss may be pathologic. remodeling phase= _____mm bone loss in first year about ____mmbone loss per year following not as seen as much with _____implants
0.9-1.6mm 0.1mm per year platform switched implants
61
keratinized tissue may improve patient comfort and benefit oral hygiene and plaque removal treatment options:
soft tissue graft to increase keratinized tissue
62
Major risk factors for peri-implantitis:
poor plaque control lack of regular maintenance after placement
63
Implants can’t get caries, but they can get
bone loss
64
May require oral hygiene aids if crowns are long, bulky, or difficult to clean:
interdental/proxy brushes super floss
65
Avoid conventional scalers, these can damage the implant surface use this instead
* Use Ti scalers and plastic tips on your Cavitron/Ultrasonics
66
maintence schedule
1. every 3 months for first year! 2. move to every 6 months if implant is stable and OH is adequate 3. continue every 3 months if OH is poor 4. *should be based on patient -risk factor -oral hygiene
67
nonsurgical Treatment Options For PeriImplant Complications
debridement (Ti curettes, perioflow)
68
surgical therapy Treatment Options For PeriImplant Complications
* Open flap debridement * Osseous recontouring * Bone grafting/guided tissue regeneration * Explantation/removal of implant
69
first thing you do for Treatment Options For PeriImplant Complications
refer to specialist