osseous sx- regen Flashcards
Objectives of Bone Replacement Grafting
Regeneration* of lost periodontium new bone, cementum and periodontal ligament
Reduce or eliminate periodontal pockets
Indications for grafting (bone)
Defect type?
looks?
Teeth critical to?
anatomy?
GTR?
Deep vertical defects
Esthetic considerations
Teeth critical to prosthesis
When anatomy precludes other procedures
Guided Tissue Regeneration (GTR)
Contraindications for grafting
Poor plaque control
Medically compromised
Poor maintenance compliance
pros of grafting
Restores lost periodontal tissue
Maintains teeth in healthy functional state
Enhances long term prognosis of teeth
Disadvantages of grafting
sensitve?
cost?
May require?
prediction?
wound closure?
post-op care?
Second surgical site?
Success decreases significantly in? dependent on?
Technique and material sensitive
Expensive (?)
May require two surgeries (?)
Unpredictable
Requires ideal wound closure
Longer, more frequent post-op care needed
Second surgical site sometimes required
Success decreases significantly in furcations and is defect-dependent
biologic responses of grafting
Osteogenic
Osteoconductive
Osteoinductive
Osteoproductive
osteogenic
viable osteoblasts are
transplanted
osteoconductive
scaffold for bone
formation
osteoinductive
release of material to induce bone formation (BMP)
osteoproductive
production of bone by
a biologic mechanism??
healing sequence of bone grafts
Incorporation (clot formation)
Revascularization
Resorption of graft material with release of factors (BMP) to induce bone formation
Bone formation
Bone remodeling and maturation
type of loss
vertical defect (>2.5mm)
how can a graft be done in a two wall defect?
use of membrane to act as a third wall
Vertical defect from root fx tx?
take that mf out
can we graft with furcation involvement?
not ideal, poor prognosis
Success in regen is dependent on?
defect, best success with three-wall defects