Implants

Question 1

A prosthetic device or alloplastic material implanted into the oral tissues beneath the mucosal and/or periosteal layer, and/or within the bone to provide retention and support for a fixed or removable prosthesis

Answer 1

Dental implant

Question 2

What are the 3 types of implants?

Answer 2

Periosteal, transosteal, and endosteal

Question 3

A _____ implant is on or around the bone

Answer 3

Periosteal

Question 4

A ____ implant goes through the bone

Answer 4

Transosteal

Question 5

A _____ implant is in the bone

Answer 5

Endosteal

Question 6

What type of imaging technique allows exact implant placement?

Answer 6

CT scan or cone beam image

Question 7

A _____ implant goes on top of the bone; resorbs the bone

Answer 7

Subperiosteal implant

Question 8

Which arch should a subperiosteal implant not be place on?

Answer 8

Maxilla

Question 9

Materials–Surgical stainless steel (316L)–Titanium–Gold alloy–Metals with ceramic coatings•

Indication –mandible with alveolar ridge height < 10mm

Answer 9

Transosteal implant

Question 10

Direct structural and functional contact between ordered, living bone and the surface of a load carrying implant; provides predictability

Answer 10

Osseointegration

Question 11

Upon placement, ____ is deposited on the surface of the implant firmly anchoring it in the surrounding bone.

Answer 11

bone

Question 12

There is no ______ interface between the surface of the implant and the adjacent bone; As a result epithelial migration along this interface is prevented

Answer 12

fibrous connective tissue

Question 13

Who discovered osseointegration?

Answer 13

P.I. Branemark

Question 14

In these experiments Branemark used an optical chamber made of _____. When he attempted to remove the chamber from its bone site he noticed that the bone adhered to the chamber with great tenacity.

Answer 14

titanium

Question 15

most metals are not suitable as biomaterials because corrosion of these metals result in continuous release of _______ into adjacent tissues.

Answer 15

metal ions

Question 16

The presence of these ions cause acute and chronic ______ responses which eventually result in fibrous encapsulation of the offending material.

Answer 16

inflammatory responses

Question 17

Titanium however is resistant to _____ and spontaneously forms a coating of titanium dioxide, which is stable, biologically inert and promotes the deposition of a mineralized bone matrix on its surface. In addition, it is strong, and easily machined into useful shapes.

Answer 17

corrosion

Question 18

is stable, biologically inert and promotes the deposition of a mineralized bone matrix on its surface; In addition, it is strong, and easily machined into useful shapes.

Answer 18

titanium dioxide

Question 19

_____ is the physiological process through which new blood vessels form from pre-existing vessels.

Answer 19

Angiogenesis

Question 20

Plasma proteins are attracted to the area, accompanied by platelet activation and the release of _____ and _____

Answer 20

cytokines and growth factors

Question 21

_______ cells migrate via the fibrin scaffold of the clot to the osteotomy site and the surface of the implant

Answer 21

Mesenchymal stem cells

Question 22

The mesenchymal stem cells differentiate into _____ and begin to deposit bone on the surface of the implant and the walls of the osteotomy site, eventually leading to anchorage of the implant in bone.

Answer 22

osteoblasts

Question 23

How long do the initial events of osseointegration take?

Answer 23

8 weeks to 4 months

Question 24

What kind of bone is deposited in the first few weeks post op?

Answer 24

Woven bone

Question 25

What type of bone is woven remodeled into and takes 6-20 weeks?

Answer 25

Lamellar bone

Question 26

Prerequisites for Achieving ______ •Uncontaminated implant surfaces •Creation of congruent, non-traumatized implant sites •Primary implant stability •No relative movement of the implant during the healing phase

Answer 26

Osseointegration

Question 27

Surface roughness of implants provides increased ________

Answer 27

Increased surface area

Question 28

•Screws into the implant to facilitate tissue healing•Placed after implant is uncovered

Answer 28

Healing Abutment

Question 29

Part that supports/retains prosthesis•Screwed into the implant

Answer 29

Prosthetic Abutment•

Question 30

Facilitates making the impression for the restoration•Snaps over abutment onto implant or is screwed directly into implant

Answer 30

Impression Coping•

Question 31

Replica of implant body•Needed to fabricate prosthesis

Answer 31

Implant Analog/Replica•

Question 32

_______ beyond the physical limits of hard tissues has been suggested as the primary cause of initial and long term bone loss around implants.

Answer 32

Mechanical stress or strain

Question 33

A tooth exhibits _____ vertical movement than an implant. This may result in higher occlusal loads on the implant.

Answer 33

more

Question 34

Tooth is connected to bone by ____

Answer 34

PDL

Question 35

Implant is connected to bone by _____

Answer 35

functional ankylosis

Question 36

The force of impact on an implant is _____ (increased or decreased)?

Answer 36

Increased

Question 37

Is there any mobility in an implant?

Answer 37

No

Question 38

Is there more or less apical movement in an implant?

Answer 38

Less

Question 39

Is there more or less lateral movement in an implant?

Answer 39

Less

Question 40

Is there more or less tactile sensitivity in an implant?

Answer 40

Less

Question 41

When an ______ is placed on an implant body the compressive stresses on the opposite side of the implant increase and the tensile and shear loads on the same side of the implant increase

Answer 41

angled load

Question 42

____ angles can modify the direction of force to the implant during mastication or parafunction

Answer 42

Cusp angles

Question 43

The force of the cusps should be on _____ of occluding teeth

Answer 43

Central fossa of occluding teeth

Question 44

The use of ____ (more or less) implants will allow better stress distribution.

Answer 44

More

Question 45

Too much stress in the implant leads to ____ of implant

Answer 45

Loss of implant

Question 46

There is now overwhelming evidence that a ______ overdenture should become the first choice of treatment for the edentulous mandible.

Answer 46

two-implant

Question 47

________ attachments in the lower jaw will provide minimal needed retention for the lower denture at an economical cost.

Answer 47

Two ball attachments

Question 48

The ____ abutments vary in height. You want to chose the height that will leave about 1.5 mm showing above the tissue.

Answer 48

zest abutments

Question 49

Which retention male is used in the zest abutment most often?

Answer 49

Pink retention male (3 lb)