Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Oral Surgery > Surgical aspects of implantology > Flashcards

Surgical aspects of implantology Flashcards

1
Q

Describe the early tissue response in an implant wound

A

Initial wound
Following days - Blood clot, granulation tissue, vascular invasion
1w - osteoclast invasion
2w - early woven bone
4w - 1st phase of true integration
4m - fully matured and remodelling

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

What are the different type of surface alterations available on implants?

A

Grit blasting
Blasting and etching
Etched
Hydroxyapatite coated
Oxidised surfaces
Titanium plasma sprayed surface
Straumanns - wet vial

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

What is the purpose of alterations?

A

Provide better stability in bone
Greater contact area for integration
Surface that retains better blood clots
Stimulation of bone healing process
Implants thread in an compress bone - delays osseointegration

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

What is an isotropic implant?

A

Surface structure without a dominating direction

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

What is an anisotropic implant?

A

Other processes such as turning or milling produces a surface that has a distinct regular pattern

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Which primary views are needed for implants?

A

IOPA
Panoramic (25% mag)

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

What are the secondary views needed?

A

CT scans
Allow segmental measuring of jaw
Identifies structures such as nerves

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

What are the different qualities of bone?

A

Type I - thick and avascular, almost entire bone comprises homogenous cortical bone

Type II - Thick layer of cortical bone surrounding a core of dense trabecular bone

Type III - Thin layer of cortical bone surrounds a core of dense trabecular bone of favourable strength

Type IV - Thin layer of cortical bone surrounding a core of low density trabecular bone

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

Qualities of bone

A

A - most of alveolar ridge is present
B - Moderate residual ridge resorption has occured
C - Advanced residual ridge resorption has occurred and only basal bone remains
D - Minimal to moderate resorption of basal bone has occurred
E - Extreme resorption of the basal bone has occured

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

How much bone should an implant ideally be surrounded by?

A

1mm circumferentially and 2mm above ID nerve

Sinus at max of 4mm

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

What is the concept of guided tissue regeneration?

A

Placement of barrier membrane
Creation of a secluded space beneath membrane
Space can only be invaded by bone cells
Creation of new bone
PTFE/Gortex/Collagen
Dropped or pinned

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

Which type of bone graft lasts longest?

A

Chin, wisdom tooth area lasts longer than hip bone graft

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

What are the 3 types of sinus lift?

A
  1. Insufficient bone/pneumatisation
  2. Internal sinus lift
  3. Lateral sinus lift
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is an autogenous graft?

A

Graft harvested from somewhere else in the patient

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

What is an allograft?

A

A graft harvested from another patient
- mineralised and irradiated, sterilised and freeze dried
- synthetic bone substitutes

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

What is a xenograft?

A

Harvested from other species.

This means that these people cannot be blood donors

17
Q

Which local sites are grafts harvested from?

A
  • From within implant prep site
  • From mandibular ramus
  • From mandibular symphysis
18
Q

From which distant sites are grafts harvested from?

A

From tibia
From iliac crest
Vascularised free flaps

19
Q

What are the advantages of block bone grafts?

A

Good incorporation
Less volume loss
Shorter healing times
Better bone quality

20
Q

What are the endosteal graft disadvantages?

A

Fibia or hip - much more bone resorption
Require a high vascular state of the recipient tissue

21
Q

What are the advantages of a tibial graft?

A

GA/LA
30-40 mins - quick
20-40cm3 non-compressed cancellous bone
Minimal blood loss
Immediate post op weight bearing
Minimal bruising/scarring
Trephine core out bone - biopsy including bone marrow

22
Q

What are the disadvantages of a tibial graft?

A

Unable to obtain bone block
Pts with history of knee injury/trauma
Patients with RA or degenerative arthritis
Patients with metabolic bone disease

23
Q

What is the site of bony harvest for cleft palate?

A

Gerdy’s tubercle

24
Q

What are the advantages of an iliac crest graft?

A

Block and cancellous bone available
Large quantities
Relatively accessible - risk of damage to gut
Small scar

25
Q

What are the disadvantages of iliac crest graft?

A

Hospital admissions for GA
Short term altered gate
Bleeding potential
Post op pain
Paraesthesia

26
Q

Which flaps are raised in the harvesting of bone from distant sites?

A

Vascularised free flaps

27
Q

Which artery is taken with an iliac crest graft?

A

Deep circumflex iliac artery - replace jaws in cancer

28
Q

Which artery is taken in a fibular graft?

A

Deep peroneal artery (used in jaw replacement surgery after cancer)

29
Q

Where is the deep circumflex iliac artery joined?

A

Facial artery which anastomoses to internal jugular

Oral Surgery (9 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions