Implant Symposium

Question 1

What is unusual about implants as a biomaterial?

Answer 1

Interface w/ both soft and mineralised tissue

Question 2

How have implants evolved?

Answer 2

Pre 1990 placed in hospital/specialist centre

Majority now placed in dental practice

Question 3

What has driven growth of implants?

Answer 3

Public demand - valid replacement which has become more popular

Question 4

Adv of titanium?

Answer 4

Biocompatible
Durable
Low corrosion rate
Oseeoinegrating

Question 5

Options managing missing teeth?

Answer 5

Accept gap
Denture
Bridge
Implant

Question 6

Components of an implant?

Answer 6

Implant
Abutment
Crown

Question 7

How does implant osseointegrate?

Answer 7

Surface changes due protein deposition
Inflammatory/ connective tissue cells onto implant surface
Adhesion osteogenic cells
Deposition bone onto implant surface

Question 8

What does bioactive mean?

Answer 8

Interact w/ body to bring around desired response

Question 9

Is titanium bioactive?

Answer 9

Not usually considered

Question 10

What is hydroxyapatite considered as?

Answer 10

Bioactive - osseoconductive

Question 11

Use of hydroxyapatite?

Answer 11

Calcium phosphate ceramic that encourage new bone tissue formation/healing following implantation

Question 12

Why can calcium phosphate not be used for all implant?

Answer 12

Too brittle for load-bearing - used as coatings

Question 13

How long for osseointergration implant?

Answer 13

3 months

Question 14

Different ways crown of implant can be retained?

Answer 14

Cement

Screw

Question 15

How to cement retained crowns work?

Answer 15

Cement lute sits around abutment

Question 16

Risk of cement implants?

Answer 16

Contact w/ gingival tissue = induce inflammatory response = peri-implantitis

Question 17

Adv of cement retained crowns?

Answer 17

Ideal aesthetics

Question 18

What is a screw retained implant?

Answer 18

Abutment integrated into crown - screw via crown

Question 19

Adv of screw retained crowns?

Answer 19

Less risk peri-implantitis

Question 20

Issue w/ screw retained crowns?

Answer 20

Aesthetics reduced

Question 21

Why can implants fail?

Answer 21

Failure osseointergrate

Peri-implantitis

Question 22

Different types implant retained bridges?

Answer 22

Multi-unit
Fixture level screw
Cement retained

Question 23

Different ways can combine dentures and implants?

Answer 23

Locator abutment
Ball attachments
Milled bars
Magnets

Question 24

Adv and disadv of locator abutment dentures?

Answer 24

Adv: stability, can be removed for OHI

Disadv: locator will wear and need replacing

Question 25

Adv of milled bars > locator abutment?

Answer 25

Better stability and retention

Question 26

Issue w/ milled bar retained dentures?

Answer 26

Need 4 implants in mandible (for locator can use 2)

Question 27

When can magnets be used in denture implant provision?

Answer 27

If lack OVD | Compensate poor angulation

Question 28

Two types of incisions done in implants?

Answer 28

Papilla sparing = sclar | Sulcual incision

Question 29

What is sclar incision?

Answer 29

Scar hiding at mucogingival junction | Cut along crest of gum w/ reliving incision sparing papilla

Question 30

Adv sclar incision?

Answer 30

Avoid papilla recession

Question 31

What is a sulcual incision

Answer 31

Crestall incsion involving papilla

Question 32

Adv sulucal incision?

Answer 32

Avoids scarring - lack relieving incision

Question 33

Disadv sulucal incisor?

Answer 33

Risk papilla recession | Risk gingival recession

Question 34

How chose flap design when providing implants?

Answer 34

Smile line

Question 35

What other factors need to consider when providing implants?

Answer 35

Width of implant - choice implant diameter affect abutment width

Question 36

What can be placed while allowing implant to heal?

Answer 36

Cover screw | Healing abutment

Question 37

When is a cover screw a good option?

Answer 37

Gingival covers over - good maximal healing/ diabetics Will have to use healing abutment as second stand to allow impression

Question 38

When are healing abutments a good options?

Answer 38

Transmucosal - gingival heal as collar around abutment

Question 39

How does titanium implant differ to bulk material?

Answer 39

Surface is titanium oxide

Question 40

What properties make titanium good implant?

Answer 40

Low corrosion Biocompatible Passivating surface

Question 41

Example synthetic bone graft substitute?

Answer 41

Hydroxyapatite

Question 42

Most commonly used membrane GTR/GBR?

Answer 42

Collagen