Ch 15 Denal implants

Question 1

What are the majority of implants and What are they based on the principle of

Answer 1

Endosseous implants

osseointegration

Question 2

Custom-made cast framework that is placed beneath the periosteum over the alveolar bone, can be used In either maxilla or mandible

Answer 2

Subperiosteal implant

Question 3

This type of frame work rests on the jawbone and the post provide anchorage for a denture or fixed prosthesis

Answer 3

Subperiosteal implant

Question 4

This type of implant pass through the mandible in an apico-coronal direction

Answer 4

Transosteal implant

Question 5

This implant protrude through the gingival tissues into the mouth for prosthesis anchorage. A stabilization plate is placed along the inferior border of the mandible

Answer 5

Transosteal implant

Question 6

This implant is limited to the mandible

Answer 6

Transosteal Implant

Question 7

What implant come in a variety of different shapes, are placed within bone, They are broadly divided into blade and root form types?

Answer 7

Endosseous implants

Question 8

Which type of endosseous implants are no longer used today bec it had a high incidence of complications and failure

Answer 8

Blade implants

Question 9

What type of endosseous implants provide osseous anchorage through the formation of a lattice between the implant surface and bone, these implants are used for replacing missing teeth in pts who are partially and totally endentulous

Answer 9

Root-form endosseous implants

Question 10

The most common type of implant seen in dental practice is what?

Answer 10

Root-form endosseous implants

Question 11

What term was defined as a direct implant- to bone union without any intervening soft connective tissue

Answer 11

Osseointegration

Question 12

Implant integration for osseointegration depend on what?

Answer 12

• Biomaterials and biocompatibility
• Implant design (length, diameter, shape, surface)
• Bone factors
• surgical factors
• loading consideration

Question 13

Defined as allowing “close contact of living cells at its surface, which does not contain leachables (molecules that separate off the surface) that produce imflammation and which does not prevent growth and division of cells in culture”

Answer 13

Biocompatiblity

Question 14

Biocompatibile materials are called what?

Answer 14

Biomaterials

Question 15

What metal is highly reactive yet biocompatible and metal of choice in osseointegration

Answer 15

Titanium

Question 16

What metal is unique in that an oxide layer prevents corrosion on the surface, enabling tissue integration to occur?

Answer 16

Titanium

Question 17

What metal is light weight and has enough strength to withstand occlusal forces

Answer 17

Titanium

Question 18

Majority of endosseous implants used today are what kind of shape

Answer 18

Cylindrical with a threaded surface design

Question 19

Almost all implants are solid, but hollow implants are available with what?

Answer 19

No threads

Question 20

Term loading means what?

Answer 20

The placement of restorations on the implants

Question 21

What determines the stability of the implants

Answer 21

Quality of the bone

Question 22

The volume density of cortical bone is 3 to 4 times that of which type of bone

Answer 22

Cancellous

Question 23

The shape of bone is dependent on several factors

Answer 23

1. ) Any history of trauma or infection
2. ) length of time since tooth loss occurred
3. ) loading by removable prostheses
4. ) systemic conditions such as smoking can influence the quality of bone

Question 24

Both of what must ne considered when planning for implants therapy

Answer 24

Shape and quality

Question 25

Whats immediate loading

Answer 25

Placement of restoration at the time of the implant surgery

Question 26

Inications for implant therapy

Answer 26

- Pts with a strong gag reflex to eliminate palatal coverage by removable prostheses - Long span bridges - Free-end removable partial dentures - Alternative to periodontally compromised teeth for bridge abutments - Hopeless periodonatlly or endodontically involved teeth - Orthodontic anchorage

Question 27

Therapy with bisphosphonates increase the risk of what?

Answer 27

Jaw osteonecrosis

Question 28

Pts receiving anticoagulant therapy are at risk for what?

Answer 28

Hemorrhage during surgical procedures

Question 29

Smoking increases the risk of what?

Answer 29

Peri-implantitis and failure

Question 30

What is made up of 2mm long junctional epithelium and a 1mm zone of connective tissue

Answer 30

Implant biologic width

Question 31

It exists between the junctional epithelium on the implant abutment and the bone?

Answer 31

Connective tissue zone

Question 32

The abutment screw connects the implant abutment to the?

Answer 32

Implant fixture

Question 33

The clinical success of implants therapy is assessed by what?

Answer 33

- Radiographic imaging - Evaluating implant mobility - Observing the surrounding soft tissue

Question 34

Healing for implants is what

Answer 34

3 to 6 months

Question 35

The ideal location and angulation of the implant should be consistent with what?

Answer 35

Planned prosthetic suprastructures (restorations)

Question 36

The submerged protocol requires two surgical procedures before restorations can be placed on the implants, what are they

Answer 36

- 1st places the implant fixture within the bone | - 2nd 3 to 6 month later to uncover the implant

Question 37

Nonsubmerged protocol is only 1 surgery

Answer 37

After the implant placement, the tissues are closed arounf either the transmucosal portion of the implant or the implant or the healing abutment

Question 38

What is jumping distance?

Answer 38

Immediate placement of implants into extraction sockets leaves a gap between the implant and the socket wall

Question 39

Healthy implants are?

Answer 39

osseointegrated and do not exhibit mobility

Question 40

During probing you should do what?

Answer 40

use of plastic probe | avoiding probing during the first 3 months

Question 41

What kind of x-rays are took??

Answer 41

Periapical and panoramic are used to assess bone level for implant sites

Question 42

The criteria for implant success includes bone loss not exceeding

Answer 42

0.2 mm annually after the 1st year

Question 43

Radiographic follow-up is recommended at

Answer 43

6, 12, and 36 month, then every 2 to 3 years there after

Question 44

What is a term for inflammatory reactions in the tissues surrounding an implant

Answer 44

Peri-implant disease

Question 45

What is a reversible inflammatory reaction in the soft tissue surrounding an implant

Answer 45

Peri-implant mucositis

Question 46

What is inflammatory reactions that affect soft and hard tissues around the implant, leading to the loss of supporting bone

Answer 46

Peri-implantitits

Question 47

If this is left untreated, ultimately progress to implant failure

Answer 47

Peri-implantitis

Question 48

Peri-implantitis is characterized by what?

Answer 48

Increasing probe depths | Bleeding and bone loss

Question 49

This refers to an implant that has lost osseointegration and is no longer an effective prosthetic anchor

Answer 49

Failing implant

Question 50

What is the primary microbial etiologic factor in peri-implantitis

Answer 50

Plaque biofilm

Question 51

The progression of inflammatory disease around implants appears to be more rapid than around

Answer 51

Natural teeth

Question 52

Implants lack connective tissue fiber insertion, what are the attachment mechanism involve?

Answer 52

Basal lamina and hemidesmosomes of epithelium

Question 53

Tx for peri-implantitis include

Answer 53

- combination of local or systemic antimicrobial therapy - Removal of plaque biofilm and calculus - Implant surface decontamination - Regeneration of defects