Pre-implant surgery, osseodistraction, bone grafting Flashcards Preview

Implants for FINALS > Pre-implant surgery, osseodistraction, bone grafting > Flashcards

Flashcards in Pre-implant surgery, osseodistraction, bone grafting Deck (11)
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1

Why do pre-implant surgery? (2)

To little bone to support implant in an acceptable position
Too much bone(!) – ridge reduction

2

Ridge reduction undertaken for (2)

- bone of poor quality (width)
- additional restorative space

3

Augmentation (3)

Lots of confusion between types of augmentation versus techniques
Techniques include Sinus lift, block graft, GBR, ridge split, zygomatics, use of narrow/short implants, etc.
Types of augmentation is different!

4

Types of augmentation (4)

Autograft – pinch a bit of bone from somewhere else on the same patient
Allograft – get some bone from someone else (not necessarily dead!)
Xenograft – get some bone from an animal
Inorganic Material – Beta TCP and HAP

5

Issues with osseoinductive and osseoconductive methods (2)

Inductive - promotes bone formation
Conductive - scaffold

6

Techniques for width (4)

- GBR
- Ridge Split
- Block Graft
- arrow/angled implants

7

Techniques for height (5)

- Onlay graft (still a block graft)
- Inlay Graft
- Osseodistraction
- Short implants/ all-on-4
- Zygomatic implants

8

Clinical scenarios: inadequate bone width (3)

- small amount
- moderate amount
- large amount

9

Clinical scenarios: inadequate bone height (4)

- overall
- in relation to adjacent teeth
- in relation to anatomical structures
- anatomical site also influences choice

10

Aim of dual layer technique (4)

Bone Chips- osseoinductive
Bone substitute- e.g. Creos/ Bio-oss – osseoconductive
Absorption of bone-conditioned blood makes bone substitute osseoinductive
Membrane over top to prevent soft tissues contacting and resorbing grafted material

11

Complications with mandibular symphysis grafts (4)

Reduced sensitivity over the chin
Scaring in buccal sulcus – fraenal tags
Chin ptosis
Damage to the incisor/ canine roots