Implants Flashcards
Osseointegration
The direct attachment or connection of vital osseous tissue to the surface of an implant without intervening CT
Implants cant tolerate ___forces
Horizontal
_____bone implant contact due to trabecular bone
60%
Implants and teeth may have
Different microbiota
Barrier epithelium
2 mm long
Zone of connective tissue
1-1.5 mm high
Collagen fiber bundles
Parallel to implant surface no actual attachment
Zone that is adjacent to implant surface is rich
From fibroblast but poor from blood vessels
Zone that is lateral direction and continuous with other zone is
Fewer fibroblasts but is rich in collagen fibers and blood vessels
Blood supply comes from
Supraperiosteal blood vessels
Since no blood from PDL chances of fighting bacteria
Is weaker bacterial challenge and slower healing time
Peri-Implant Mucositis
Reversible Inflammation of the mucosa surrounding the implant
- Presence of bacterial plaque and calculus
- Edema redness hyperplasia
- BOP
- Exudate/pus
- no radiologic evidence of bone
Peri-Implantitis
Inflammatory reactions associated with loss of supporting bone around an implant in function
Peri-Implantitis lesions are characterized by
The presence of numerous neutrophils in the tissues surrounding the implant
There is direct contact between plaque on the implant and
Inflamed CT
Class I
Slight horizontal bone loss with minimal defects
Class 2
Moderate horizontal bone loss with isolated vertical defects
Class III
Moderate to advanced horizontal bone loss with broad circular bony defects
Class 4
Advanced horizontal bone loss with broad circumferential vertical defects as well as loss of the oral and vestibular bony
Occlusal trauma is a _____ etiology of implant disease and a _____of period
Primary
Secondary
Implant should be surrounded with a minimum of
1 mm alveolar bone thickness
6 mm BL ridge x 6 mm MD ridge you need to place a ____ implant
4x4 mm implant
Minimum bone thickness between 2 implants
3 mm
Minimum bone thickness between an implant and a tooth
5 mm
Coronal part of implant should be placed approximately
5 mm apical to adjacent CEJ
Timing of implantation
Maxilla 6 months
Mandible 3 months
Jumping distance
Distance that can be filled by new bone between implant and remaking host bone ideal is 20-40 um
24 hours
Resorption at cortical bone woven bone formation vascular formation
1 week
Reparative macrophages and undifferenatiaed mesenchymal cells
2 weeks
New bone formation detected at furcation sites of the implant surface
Up to 6 weeks
Callus formation and lamellar compaction within woven bone
Temporary decease in stability
After 6 weeks
