Implant Final Flashcards
(52 cards)
Designed mainly to anchor dentures in the completely edentulous patient?
subperiosteal
**consists of metal framework that attaches on top of jawbone…but underneath bone tissue.
FAILS due to corrosion no bueno
Designed to anchor dentures in the completely edentulous patient in the mandible only?
transosteal- staple implants going through the bone.
Either metal pin or a U shaped frame. made of titanium
These implants are “in bone” and what we use today?
endosteal
**placed within alveolar OR basal bone
when might you use blade implants?
required shared support with natural teeth…use for narrow ridges? not typically used today.
T/F
Fibrous CT adheres the implant to the bone
False- no fibrous CT interface
T/F
Epithelial migration along the implant is prevented?
true
How would you describe type 1 bone? and where would you find it?
OAK
Anterior MN because more cortical bone!
How would you describe type 2 bone?
pine wood- posterior MN
how would you describe type III?
balsa wood- anterior MX
Type IV bone?
styrofoam- posterior MX- more cancellous bone
how many months after extraction should you wait to place an implant?
3-4 months after extraction
How long does it take the bone after extraction to start developing a cortex again?
2 months about
Describe the bone response to implant placement?
First you have bleeding, then the tissue DIES (necrosis) then you get some resorption, and than alas—new bone formation!
**Tissue necrosis-no intuitive
what’s so awesome about the titanium oxide layer?
stays biologically active for YEARS allowing for adaption. this can interact with water, mineral ions, and blood derived plasma proteins.
Describe the initial contact with the implant?
First of all, you get a coating of the surface (oxide layer?) with PLASMA proteins, then clot formation.
INFLAMMATION because that’s the normal response of the bone, Necrosis, vascular ingrowth, collagen rich matrix, and then osteoblast synthesis of bone matrix.
Describe the remodeling phase
Osteoclasts remodel the initial bone matrix (what the osteoblasts made), it’s a coordinator
T/F
Primary integration is a biologic process?
false! PRIMARY is all mechanical- think of just the contact between the osteotomy and the implant- achieved through macro retentive features
Describe secondary integration?
Secondary is ALL biologic!!!!
This has to do with osteoconduciton and osteoinduction
Osteoconduction
enhance the IN migration of bone from the surface of the osteotomy
MEANS that bone grows on a surface!
Conduct the bone to grow on the surface
Osteoinduction
biologically manipulate the types of cells that grow onto the implant surface
Recruits immature cells? MAJORITY OF BONE HEALING
Describe some of the micro retentive features of an implant?
machined surfaces, coated surfaces, sand or grit blasting followed by acid etching….
Increases the process of SECONDARY which is the biologic process
Describe transmucosal attachment?
barrier epithelium is about 2 mm long and attaches to the implant abutment with HEMIDESMOSOMES….
the fibers run parallel.
CT fiers integrate to implant surface?
**generally you will have GREATER probing depths around implant.
How much volume loss approximately occurs in the first 3 months?
2/3 of the entire volume loss…
within 12 months, you get about 50% reduction loss
When the buccal plate is less than (__) mm, you should consider ridge preservation?
less than 1.5-2.0 mm
